Lost your password?
Not a member?
Resend confirmation instructions
Sort By Category
- New Technology
- New Products
- PCB Industry
- Signal Integrity
- Breaking News
- IPC Standards
- From The Show
Achieving Optimum Signal Integrity During Layer Transition on High-Speed PCBs
07/11/2018 | Chang Fei Yee, Keysight Technologies
Dave Wiens Discusses Multi-board Design Techniques
07/09/2018 | Andy Shaughnessy, I-Connect007
Sensible Design: Protecting PCBs from Harsh, Challenging Environments
07/03/2018 | Alistair Little, Electrolube
Paving the Way for 400Gb Ethernet and 5G
06/26/2018 | Chang Fei Yee, Keysight Technologies
Excerpt: The Printed Circuit Designer’s Guide to…Flex and Rigid-Flex Fundamentals
06/25/2018 | Dave Lackey and Anaya Vardya, American Standard Circuits
Design :: New Technology
Achieving Optimum Signal Integrity During Layer Transition on High-Speed PCBs
In electronic systems, signal transmission exists in a closed-loop form. The forward current propagates from transmitter to receiver through the signal trace. Meanwhile, the return current travels backward from receiver to transmitter through the power or ground plane directly underneath the signal trace that serves as the reference or return path. The path of forward current and return current forms a loop inductance. It is important to route the high-speed signal on a continuous reference plane so that the return current can propagate on the desired path beneath the signal trace.
Paving the Way for 400Gb Ethernet and 5G
This article briefly introduces the 4-level pulse amplitude modulation (PAM-4) and its application in 400 Gigabit Ethernet (400GbE), to support the booming data traffic volume in conjunction with the deployment of 5G mobile communications. Furthermore, this article also highlights the essential pre-layout effort from signal integrity perspective for physical (PHY) link design on a PCB, including material selection, transmission line design and channel simulation to support 56Gbps data rate that paves the way for seamless communication in 400GbE.
Excerpt: The Printed Circuit Designer’s Guide to…Flex and Rigid-Flex Fundamentals
The design process is arguably the most important part of the flex circuit procurement process. The decisions made in the design process will have a lasting impact, for better or worse, throughout the manufacturing cycle. In advance of providing important details about the actual construction of the flex circuit, it is of value to provide some sort of understanding of the expected use environment for the finished product.
Making the Most of PCB Materials for 5G Microwave and mmWave Amps
Ready or not, 5G is coming, and it will require the right circuit materials for many different types of high-frequency circuits, including power amplifiers. 5G represents the latest and greatest in wireless technology, and it will be challenging to design and fabricate, starting with the circuit board materials, because it will operate across many different frequencies, such as 6 GHz and below, as well as at millimeter-wave frequencies (typically 30 GHz and above).
Mark Thompson: What Designers Need to Know about Fab
Mark Thompson wants to help PCB designers. He’s seen it all in CAM support at Prototron Circuits: the incomplete or inaccurate data packages, boards that are unnecessarily complex or over-constrained, and so much more. Mark just returned to writing his popular Design007 Magazine column, The Bare (Board) Truth, which addresses questions such as, “What happens to your design at CAM?” I asked Mark to explain why it’s so important for designers to communicate with their fabricators, and why they need to get out of the office and visit a board shop every now and then.
Design and Manufacturing Perspectives from DISH Technology’s Les Beller
I recently interviewed Les Beller, a long-time PCB designer who is now a manufacturing engineer for DISH Technology. We discussed his company’s business shift towards 5G and streaming, and the stresses that puts on a design team. He also explains the greatest challenges that he’s facing with HDI and higher frequencies, and the added importance for designers to understand the manufacturing process and DFM tools.
The Survey Said: Industry Optimistic After Strong 2017
During recent trade shows and conferences, we spoke with a variety of fabricators and assembly providers. They had one thing in common: Every company achieved strong growth in 2017, and shared a positive outlook about the future. This year, the industry is optimistic, driven by positive economic outlook, growing customer demand, and new technologies and vertical markets, among others.
ITEQ Ready for Autonomous and Electric Vehicles of the Future
During DesignCon 2018, I spoke with Tarun Amla, the executive vice president and CTO of ITEQ. We discussed ITEQ’s future plans, including the development of materials for cutting-edge technology needs, such as autonomous and electric vehicles, as well as 5G technology.
American Standard Circuits Discusses New RF/Microwave eBook
During DesignCon 2018, I met with Anaya Vardya and John Bushie of American Standard Circuits. Anaya and John recently co-wrote an eBook, published by I-Connect007, titled "The Printed Circuit Designer’s Guide to Fundamentals of RF/Microwave PCBs." We discussed their goals and the scope of this handy microbook, which features plenty of information that even high-speed digital designers can benefit from.
Expert Discussion: Dan Feinberg on Automotive Electronics
A fixture at the Consumer Electronics Show, Dan Feinberg has been covering autonomous, hybrid and electric vehicles for years, along with the rapid growth of high-tech electronic gadgetry in traditional vehicles. In this freewheeling expert discussion, Dan spoke with Barry Matties, Patty Goldman, and Happy Holden about the future of auto electronics and what it all means to the PCB industry.
Zuken Pulling Ahead in Automotive PCB Design
Zuken has been developing PCB design tools for the automotive market for years. With automotive electronics worth over $200 billion globally, and growing every day, Zuken is preparing for a brave new world of smart cars, and autonomous and electric vehicles. I spoke with Humair Mandavia, chief strategy officer with Zuken, and asked him about the challenges facing automotive PCB designers, and the trends he’s seeing in this constantly evolving segment of the industry.
Interview: Incoming and Outgoing Presidents of Polar Instruments
Polar Instruments has hired some talented technologists recently, including a new president, Dorine Gurney. At DesignCon, I had the opportunity to sit down for an interview with Dorine and Ken Taylor, Polar’s outgoing president. We talked about Dorine’s objectives for the company and Ken’s plans for life after Polar.
Estonia a Hot Spot for New Technology
Most Westerners know very little about Estonia. A former Soviet Bloc country, Estonia has come a long way since restoring its independence in 1991. Electronics companies are thriving in this tiny EU member country, and capital city Tallinn has been called “Silicon Valley on the Baltic Sea.” During productronica, I met with Arno Kolk, general manager of the Estonian Electronics Industries Association, and we discussed the explosion of new technology in this “Baltic Tiger” country?
Fadi Deek Discusses Mentor’s New Power Integrity eBook
At DesignCon 2018, I ran into Mentor’s Fadi Deek, the author of both of Mentor’s I-Connect007 eBooks: the newest, "The Printed Circuit Designer’s Guide to Power Integrity by Example," and their first book, "The Printed Circuit Designer’s Guide to Signal Integrity by Example." We sat down and discussed how the idea for the books came about, as well as some of the power integrity challenges facing PCB designers and engineers.
Succeeding at the Velocity of Technology: An IPC APEX EXPO 2018 Wrap-Up
After many months of planning, IPC APEX EXPO 2018 proved to be a success. From revolutionary advancements displayed on the show floor to expert insights conveyed in technical conference sessions and professional development courses, IPC APEX EXPO provided the learning and connections that helped 4,574 attendees from 43 countries prepare for the future.
Jan Pedersen: CircuitData Enhances Current Data Formats
During the Design Forum at IPC APEX EXPO 2018, Jan Pedersen, senior technical advisor for the PCB broker Elmatica, gave a presentation on CircuitData. The language is designed to help facilitate other design data transfer formats such as Gerber, ODB++, and IPC-2581. Jan spoke with Managing Editor Andy Shaughnessy and Contributing Technical Editor Happy Holden about how this open language works with the existing data formats, as well as the need to eliminate paper documents from design process, and how the industry can help shape this open-source language.
Mentor’s HyperLynx Automates SERDES Channel Design
Mentor recently released the newest version of its HyperLynx signal integrity software. This version may be the first SI tool in the industry to fully automate SERDES design channel validation. I spoke recently with Chuck Ferry, product marketing manager with Mentor, about the new HyperLynx and some of the new serial link design capabilities that customers have been demanding.
Cadence’s Sigrity Automates Power Integrity Simulation Earlier in Design Cycle
DesignCon is always a great place to check out the latest PCB layout and simulation software tools. During DesignCon 2018, Guest Editor Kelly Dack met with Sam Chitwood, a product engineer with Cadence. Sam explained how the Cadence Sigrity simulation software now allows users to make decisions early in the design process, and how this can help optimize the design of the power delivery network and ensure signal integrity in complex PCBs.
SnapEDA Harnesses Technology in Providing Verified Parts
Like many young entrepreneurs, Natasha Baker knew she wanted to run her own company years before she finally pulled the trigger. But she waited until the time was right, developed a business plan, and stuck to it. Now, five years after SnapEDA was launched, the company continues to expand its library parts and symbol creation services, with the help of some of today’s most cutting-edge technology. I recently caught up with Natasha, and we discussed how her team utilizes technology that has helped SnapEDA to become a major player in this space.
Worldwide Systems Consulting: Tools, Process, People
In Munich for productronica, Editor Andy Shaughnessy and Publisher Barry Matties sat down with Mentor’s Jay Gorajia, director of worldwide systems consulting. Gorajia discussed Mentor’s systems consulting business, their focus on the “digital twin,” and how their acquisition by Siemens is benefitting Mentor and their customers.
IPC-2581 Demo Draws a Crowd at IPC APEX EXPO
During IPC APEX EXPO 2018, the IPC-2581 Consortium held a demo of this open-source data transfer standard, attracting numerous designers, fabricators and assembly providers. Jim Pierce of Axiom Electronics and Bob Miklosey of Aegis Software sat down to discuss the demo and their involvement with the consortium. Axiom now charges more for designs submitted in the Gerber format.
Still Using 1980s Formats for Design Data Handoff?
The IPC-2581 format was created in the early 2000s with the merger of two competing formats: ODB++ and GENCAM. The new format, the brainchild of the late Dieter Bergman, languished with no adoption until 2011, when a small group of companies created the IPC-2581 Consortium with the goal of getting this open, neutral and intelligent format adopted. The consortium has been growing steadily in recent years. Its membership now includes more than 100 associate members in addition to its more than 90 corporate members.
Frontline's InStack Viewer Helps Designers and Fabricators
Ben Quarles, software solultions business manager at Frontline, and Editor Andy Shaughnessy discuss the new InStack Viewer, which allows PCB designers and fabricators to investigate impedances, material properties, and other attributes of the correct stackup.
Real Time with... DesignCon: User Feedback Helped Shape Altium Designer 18
During DesignCon 2018, Altium’s Judy Warner sat down with Editor Kelly Dack for an update on Altium’s software tools. She explains how user feedback lead the company to fix the bugs in Designer 17 during the development of Designer 18, and how “community engagement” is more than a buzzword for Altium.
Entering—and Enjoying—the Industry
I was recently given the opportunity to write an article for our publication. Being somewhat new to this industry, I figured it would be a good idea to write an introduction on how I got into electronics—specifically the part most people my age don’t give thought to.
Out-of-the-Box Innovation Strikes a Chord at NAMM 2018
The National Association of Music Merchants (NAMM) holds two shows each year; the first is in Anaheim in January, and the second in Nashville in July. The January show is huge, attracting 100,000 visitors during its four-day run. My friend and editor (and bass player) Dan Feinberg has discussed how difficult it was for him to cover the CES show in a few days, and I must echo that sentiment about NAMM. It is one gigantic show.
Who Really Owns the PCB Layout? Part 2
In Part 1 of this series, Paul Taubman made the bold statement that the PCB layout is just as much a mechanical effort as it is an electrical one. In Part 2, he threads the needle, explaining why he believes that a PCB truly a mechatronic design, and why mechanical engineers may be more prepared to take on the PCB layout.
Rogers Continues Expansion into High-Speed Digital Materials
Mahyar Vahabzadeh discusses a paper presented by his colleague Dr. Allen Horn at DesignCon. He also explains some of the different characteristics Rogers has discovered as they move from RF into high-speed digital materials.
APCT’s Cartel Acquisition Adds Capacity, Technology and Certifications
APCT recently acquired Cartel Electronics and its affiliate, flex and rigid-flex maker Cirtech. During DesignCon 2018, I spoke with APCT President and CEO Steve Robinson about what this acquisition means for the San Jose-based fabricator.
Mentor Focusing on Power and Signal Integrity
Chuck Ferry is a product marketing manager at Mentor, and SI/PI product architect for HyperLynx tools. I spoke with Chuck recently during DesignCon 2018, and he shared some of his thoughts on the industry and Mentor’s plans for this year and beyond.
A Conversation with Dorine Gurney, New President of Polar Instruments
Dorine Gurney has recently been named president of Polar Instruments. With a 30-year resume that includes management positions at Mentor Graphics, Lattice Semiconductor and Tektronix, she takes the reins as Ken Taylor heads into retirement. I recently caught up with Dorine at DesignCon 2018 in Santa Clara, California.
Fully Automated Schematic Verification
Schematic verification is a part of the hardware engineer’s responsibility just as PCB layout verification is an accepted part of the PCB designer’s responsibility. However, with today’s circuit designs becoming more and more complex, time-consuming manual schematic verification is no longer an option. Manual verification of a complex circuit introduces significant risk by not identifying schematic design errors that are, in turn, passed to the downstream processes and ultimately to the fabricated board.
Pulsonix Ready for 2018
Pulsonix has been developing PCB design software for almost 20 years, establishing a reputation for its full-featured, low-cost design tools. Now, the UK-based company wants to break into the US market, and Pulsonix recently showcased its latest tools at PCB West. During the show, I spoke with Business Development Manager Ty Stephens about the company’s latest tools and plans to become a major player in the US market.
What’s New in EDA: The Experts Discussion
We wanted to find out what’s new in the world of EDA. Joining us on our experts conference call were Polar Instruments Managing Director Martyn Gaudion, DownStream Technologies founder Rick Almeida, and Director of Product Management Mark Hepburn and Product Management Group Director of Allegro Enterprise Products Hemant Shah, both with Cadence Design Systems. The group discussed the challenges and opportunities they see in our industry, as well as the need to bring new blood into the PCB design community.
Nano Dimension’s 3D Printing: Prototypes at the Push of a Button?
SICK AG is a global manufacturer of sensors and sensor solutions for industrial applications, with headquarters located in Waldkirch, Germany. After a demo of Nano Dimension’s new 3D printing machine at productronica, Barry Matties met with SICK’s Danny Wernet to discuss its pros and cons and get his overall impression of the technology. Are 3D prototypes really as simple as feeding in a Gerber file and pushing a button?
Dr. Johannes Adam Gets Hot on Thermal Management
Thermal management expert Johannes Adam, PhD, was kind enough to take the train from his home in Leimen, Germany to meet with me during productronica in Munich. He is the creator of TRM (Thermal Risk Management) software and contributor, with Douglas G. Brooks, of "PCB Trace and Via Currents and Temperatures: The Complete Analysis, 2nd Edition." He’s also working on his own book on thermal management. Johannes sat down for an interview, and I asked him to share his views on the current state of thermal management for PCBs, and what the industry can do to put the spotlight on what’s hot in PCBs.
Mike Jouppi Discusses his Drive for Better Thermal Data
If you mention thermal management in a group of PCB designers and design engineers, Mike Jouppi’s name usually pops up. Mike is an engineer and founder of the Thermal Management LLC consulting firm. He spent years updating IPC’s charts on current-carrying capacity, which had been unchanged since the 1950s. I recently caught up with Mike and asked him to give us his views on the state of thermal management, as well as the tools and standards related to thermal design.
Streamlining Thermal Design of PCBs
When designing a PCB, thermal issues are often locked in at the point of selecting and laying out the chip package for the board. After that, only remedial actions are possible if the components are running too hot. Assumptions made about the uniformity of the airflow in these early design stages can mean a disaster for the commercial viability of a PCB if those assumptions are incorrect. A different approach is needed to improve reliability and to optimize board performance. Dr. John Parry of Mentor explains.
IEEE’s Romanian SIITME Show a Success
The 23rd annual IEEE International Symposium for Design and Technology in Electronic Packaging (SIITME) was held in Constanta, Romania, in October 2017. It attracted more than 190 participants from Romania, and 13 other counties. While there might be some who question the suitability of Romania as a venue for such a conference, the country has a long technological history and has produced some top innovators and pioneers in aviation including Aurel Vlaicu, Traian Vuia, Henri Coanda, who prototyped an early jet aircraft in 1910.
Mentor White Paper: Characteristic vs. Instantaneous Impedance
Successful signal integrity analysis depends on a fundamental concept: impedance. Without a thorough understanding of the impedance values that a signal encounters along the way, designers cannot maintain good signal quality from source to receiver.
The Impact of HDI on PCB Power Distribution
A key aspect of HDI technology is the use of microvias. For reference, the IPC HDI Design Committee has identified microvias as any hole equal to or less than 150 microns. Multiple types of HDI stack-ups associated with blind and buried microvias can be used to meet the density and cost requirements for today’s products. Design teams should develop stack-ups in conjunction with the fabricator to minimize cost and meet signal integrity requirements.
Three Perspectives for HDI Design and Manufacturing Success
Mike Creeden has been in the PCB design industry for more than 40 years now. In June 2003, he founded San Diego PCB Inc., a design bureau serving a variety of industries, including industrial, automotive electronics, medical diagnostics, internet of things (IoT), defense, aerospace, and communications markets. So, we asked Creeden to share his insights about HDI, and how designers and manufacturers can address those issues.
Who Really Owns the PCB Layout?
In order to understand the current climate, we have to look at the division of labor that took place in electronic design about 40 years ago. The labor was divided into two processes, with the first being the design itself. This process was (and still is) owned by the electrical engineers. Though circuit design has changed, the methods for representing the circuit have not. Paul Taubman of Nine Dot Connects explains.
Lee Ritchey On the Future of PCB Design
I spoke with long-time PCB design instructor and Right the First Time author Lee Ritchey during the recent AltiumLive event in Germany. Lee and I discussed everything from the advice he offers to young PCB designers to his thoughts on where the industry is going and what’s missing from today’s electrical engineering curriculum.
Cannonballs, eBooks, and Signal Integrity
I-Connect007 editors Andy Shaughnessy and Pete Starkey recently met with Polar Instruments Managing Director Martyn Gaudion at productronica. They discussed the success of "The Printed Circuit Designer’s Guide to…Secrets of High-Speed PCBs," the ongoing challenge of facilitating communication between designers and fabricators, and the influence of chemical bond-enhancement processes on insertion loss.
Bay Area Circuits Updates InstantDFM Tool
Bay Area Circuits is on a quest to help PCB designers and design engineers. For the past few years, the company has been holding facility tours and open house events to help designers understand more about the fabrication process. Now, Bay Area Circuits has upgraded its free design tool, InstantDFM.com, which allows customers and non-customers alike to check manufacturability and request pricing of their jobs. At PCB West, Andy Shaughnessy spoke with President Stephen Garcia and COO Brian Paper about the new tool update, and some of the other services they offer for PCB designers.
Zuken Teams With Nano Dimension for 3D Printing Design Flow
At PCB West, Zuken shared a booth with Nano Dimension. Zuken has been working with Nano Dimension for some time, and adding support for 3D printing and nanotechnology to its design tool platforms. I sat down with Zuken’s Humair Mandavia and Nano Dimension’s Simon Fried to learn more about this alliance, and to find out more about this odd-looking box being demonstrated in Zuken’s booth.
Signal Integrity: The Experts Weigh In
When we began planning the October issue on signal integrity, we arranged a conference call with a variety of industry experts. Mike Steinberger of SiSoft, Mark Thompson of Prototron Circuits, and Yogen and Sunny Patel of Candor Industries joined editors Andy Shaughnessy, Patty Goldman, Happy Holden and Publisher Barry Matties on the call for a spirited discussion about the challenges related to signal integrity and some of the tricks of the trade for helping ensure SI.
Happy Holden and Charles Pfeil Discuss the Past and Future of PCB Design, Part 2
In Part 2 of this feature interview, I continue my conversation with industry icons Happy Holden and Charles Pfeil at the recent AltiumLive 2017 event in San Diego. In this half of the interview, we discuss the potential for artificial intelligence in EDA software tools, the graying of the designer pool, and what can be done to draw more young people to PCB design.
AltiumLive Summit—Munich, Germany, Part 2
Pete Starkey continues with his review of the AltiumLive PCB Design Summit held recently in Munich, Germany. The second day commenced with a new product launch. “Working together is hard” it read on the screen. Statistics indicated that 33% of new products were late getting to market, of which 28% were late due to insufficient collaboration, and up to 50% of potential revenue could be lost through being late to market. Then the screen read “NEXUS makes it easy!”
AltiumLive Summit—Munich, Germany, Part 1
Altium held a very successful AltiumLive PCB Design Summit in San Diego, California at the beginning of October for the benefit of their North American design community, and followed it three weeks later with a counterpart European event in Munich. And what an eye-opener it proved to be—literally hundreds of delegates, a superbly organised and managed programme, billed as a completely immersive two-day interactive design experience on a theme of learning, connecting and getting inspired.
Happy Holden and Charles Pfeil Discuss the Past and Future of PCB Design, Part 1
When it comes to the PCB design community and the challenges facing it, as well as where design has been and where it’s heading, there aren’t many people as qualified to speak on the topic as long-time industry veterans Happy Holden and Charles Pfeil. Joined by I-Connect007’s Barry Matties at the recent AltiumLive 2017 event in San Diego, the three sat down for a discussion about the current state of PCB design, what the future holds, and what it means to be a designer.
Insulectro Teams with Isola to Address Signal Integrity Needs
Insulectro and Isola recently shared a combined booth during PCB West 2017. Insulectro has distributed Isola materials for years, and the companies wanted to focus on Isola’s line-up of high-speed, low-loss material sets. Insulectro’s Chris Hunrath, VP of Technology, and Norm Berry, Director of Laminates and OEM Marketing, sat down with me to discuss the challenges facing signal integrity engineers today, and some of the Isola low-loss, low-Dk materials that can help with their signal integrity requirements. You might find Chris and Norm speaking to a group of PCB designers near you.
SiSoft Preparing for DDR5 Simulation Next Year
DDR5 is expected to double the memory bandwidth and density of DDR4. Andy Shaughnessy recently spoke with SiSoft CTO Walter Katz about his company’s efforts to hit the market with this game-changing technology in 2018.
The History of Predictive Engineering
It all started in 1983, at HP, when I complained to our group's vice president that our W. Edwards Deming and Total Quality Management (TQM) Six Sigma training was being concentrated in PCB manufacturing. We had eliminated final inspection and instead placed quality in the hands of the operators with a final electrical test. The electrical test was governed by what we learned from Deming.
Carl Schattke: I Started Designing Boards When I Was 12
Growing up with a father who owned a PCB design bureau, Carl Schattke, CID+, may have been predestined to design circuit boards for a living. In fact, he’s been designing boards for nearly his entire life. Carl gave a keynote speech at the recent AltiumLive event in San Diego, where I caught up with him to discuss a lifetime spent in PCB design, as well as the graying of the PCB design community and what might be done to inspire a youth movement in PCB design.
Sunstone Integrates SnapEDA Libraries into PCB123
Sunstone Circuits and SnapEDA recently announced that SnapEDA’s parts library would be integrated into Sunstone’s PCB123 design tool. During PCB West, I interviewed EDA Product Manager Nolan Johnson of Sunstone Circuits and SnapEDA President Natasha Baker. We discussed their new partnership, the changing parts library landscape, and where the companies see this alliance heading in the future.
Dan Beeker’s AltiumLive Keynote: It's All about the Space
Dan Beeker of NXP Semiconductors was a keynote speaker at the recent AltiumLive 2017 event in San Diego. His presentation focused primarily on the design of three-dimensional structures and how it’s all about space. I caught up with Dan, and we discussed his presentation, his background and career, and what kind of advice he would give to young PCB designers.
AltiumLive 2017 Attracts Hundreds of Designers
Altium conducted its first-ever users conference, AltiumLive 2017: Annual PCB Design Summit, at the Hilton Resort and Spa on beautiful Mission Bay in San Diego. This conference included a lineup of notable speakers, including four keynote speeches over the two-day event. This conference drew hundreds of PCB designers, many of whom attended breakout sessions designed in accordance with the show’s motto, “Learn – Connect – Get Inspired.”
It’s Not Your Father’s DFM Anymore
What does DFM look like today? Well, for one, it’s become more than DFM. We now expect our software tools to serve us more completely to take new designs to market. DFM has evolved to become an integral part of new product introductions (NPI). Today’s NPI software spans design and manufacturing to accelerate the optimization of a PCB for manufacturing. It looks at the entire design-to-manufacturing release process and deliverables, then streamlines them.
Sensible Design: Thermal Management—The Heat is On
Thermal management materials are designed to prolong equipment life and reduce incidences of failure. They also maintain equipment performance parameters and reduce energy consumption by reducing operating temperatures, and minimising the risk of damage to surrounding components. Indirectly, they maintain brand reputation, as the reliability of the equipment will be very dependent upon the effectiveness of the thermal management technique used.
Fault-Finding: It’s All About Prevention, not Blame
There are thousands of things that can go wrong during the design and manufacture of a PCB assembly. One might say that it is an absolute miracle when a PCB goes through all of its phases—design, fabrication and assembly—and operates successfully. But there are some management and customer cultures who naively attempt to resolve problems by seeking out the culprits and shouting “Off with their heads!”
Whose Fault is That Bad Board?
Years ago, I held a position in an EMS company where projects were analysed before manufacturing. We found that even some of the best and most innovative circuits could not be manufactured. Why? Because the PCB designer, an electronic engineer, was not acquainted with the fabrication process. He had no idea about technological requirements necessary for electronic production. I know another designer who learned, finally, the importance of the thermal relief pad for heat restriction during reflow for a good soldering. His response? “Oh, was that what they were for? And to think I worked so much to remove them!”
The International Paris Air Show with ASC’s Anaya Vardya
The International Paris Air show is the crème de la crème of the world’s trade shows. This is the big one, where all the aircraft, airline and defense aerospace companies meet to introduce new products, discuss the future of aviation, and make deals. This year I decided to talk to my friend Anaya Vardya, ASC’s president and CEO, about the show, why he goes and what it’s like.
Trilogy Circuits: Mil/Aero Demands Technological, Regulatory Expertise
In the 16 years since its founding, Trilogy Circuits has become one of the go-to companies for mil/aero PCB design and manufacturing. I spoke with Charlie Capers, president and founder of the Richardson, Texas firm, about how he keeps ahead of the game. As he explains, succeeding with mil/aero PCB work requires not only mastery of the technological side, but of the regulations and certifications as well.
Embedded Technology: A Useful Tool in Freedom CAD’s Toolbox
Freedom CAD has been designing and fabricating boards with embedded technology for years, and doing some pretty innovative work along the way. I asked Scott McCurdy, Freedom CAD’s director of sales and marketing, to share some details about their embedded processes, as well as the challenges and opportunities that embedded technology offers.
Better Together: How HDP User Group Showcases the Industry’s Best Side
HDPUG is a non-profit trade organization comprised of members from top companies in the electronics industry, from materials suppliers and manufacturers, to OEMs and end users. Key activities include collaborating on issues facing multiple industries and bringing people together on projects who might not have met otherwise. Barry Matties met HDPUG’s European representative and project facilitator Alun Morgan at the recent EIPC Summer Conference to learn more about the group and current projects.
Whose Fault is it When the Board Fails?
In an upcoming issue of The PCB Design Magazine, we will discuss a question that you've undoubtedly faced in your job: Whose fault is it when the board fails? Of course, everyone likes to blame the PCB designer. But think about it. Is the board shop at fault, or perhaps the EMS provider? Is it the customer's fault, or does the designer bear some of the blame after all? Take this quick survey and let your voice be heard!
SnapEDA: Recruiting Top Engineering Talent in an Amazon World
You don’t have to love EDA to work at SnapEDA, but it helps. This startup, founded by Natasha Baker, is on its way to creating the world’s largest parts library for PCB designers. Baker leads a small team of young, fiercely talented engineers—the kind of employees that are attractive to companies like Google and Facebook. I asked Natasha to explain her hiring process, and how she ensures that each employee is the right fit for SnapEDA.
Altium Focuses on the Designer First
A few months before Judy Warner joined Altium, while she was still with I-Connect007, she sat down with Lawrence Romine to discuss the company’s drive to satisfy the individual PCB designer, and not necessarily the OEMs who employ them. Romine also explains what sets designers and engineers apart from the average person, and why some Altium users have a different primary EDA tool, but use Altium when they need a design done fast.
Bruce Mahler Discusses Ohmega’s Resistive Material Technology
Bruce Mahler, vice president of Ohmega Technologies, sat down for an interview with me at DesignCon 2017. He discussed the company’s latest embedded resistive materials, as well as some of the drivers and challenges in that segment of the materials industry.
TTM Shines a Light on Optical Interconnect
Are embedded optics on PCBs set to make a breakthrough in the upcoming years? According to Dr. Craig Davidson, VP of Corporate Technology at TTM, it might be closer than you’d expect. In a recent interview with the I-Connect007 team, Craig outlines TTM’s current pursuit of high-volume manufacturing lines able to deliver embedded optical interconnect, what that would mean for the PCB industry, and why he thinks there will be manufacturing production capability by 2020.
Rigid-flex Design Tips and Best Practices
While the traditional “design-separately-then-assemble” approach minimized potential issues with the flex portions of the product, it also had several inherent disadvantages. These include the cost associated with the physical connectors; the space required for the physical connectors; the need to properly manage interconnects that have to transition between the separate rigid and flex PCBs (through the connectors); and, of course, the time and cost associated with assembly. The move to the current generation of rigid-flex technology mitigates these issues; however, they are replaced with a different set of challenges and concerns.
Mentor Graphics Takes Best Paper Award at DesignCon
At DesignCon, I met with Dave Kohlmeier, senior product line director for Mentor Graphics. We discussed their Best Paper award and DesignCon sessions such as the Signal Integrity Boot Camp, as well as the new rigid-flex capabilities found in the HypeLynx suite.
A New Power Design Methodology for PCB Designs
Advanced PCB design is an iterative process of analysis-fix-analysis. Historically, this process is very time-consuming, requiring analysis experts and PCB designers to work together to find and fix layout problems. This article describes a new PCB design methodology that allows a PCB designer to perform the power design without having to run expert-level analysis tools. This methodology provides the setup automation for advanced analysis without the need to understand every minute parameter, and can be completed in a few steps.
Catching up with Polar Instruments' Geoffrey Hazelett
Product specialist Geoffrey Hazelett discusses some of the latest developments at Polar Instruments, including a new tool that will allow fabricators to determine how copper roughness will affect the end-product. He also talks about Polar's upcoming eBook on signal integrity, soon to be published by I-Connect007. Talented young technologists like Geoffrey are the future of our industry.
Cadence’s Zhen Mu Discusses Her Power-Aware Analysis Solution White Paper
At DesignCon, I met with Zhen Mu, senior principal product engineer with Cadence Design Systems, and Brad Griffin, product marketing director for Cadence. We discussed Zhen’s new white paper, “Power-Aware Analysis Solution.”
Kelly Dack and Mike Creeden: Are We in a PCB Design Renaissance?
Technical Editor Kelly Dack and San Diego PCB founder Mike Creeden discuss some of the trends they're seeing in the PCB design community, including greater numbers of young people becoming designers and more EEs doing design work. They also focus on IPC's training and designer certification efforts, and the need for designers to get out of the office and visit a board shop once in a while.
Real Time with...IPC: Jim Fuller Offers HDPUG Update
Sanmina's Jim Fuller gives his insight on how the High-Density Packaging User Group (HDPUG) shares the experience and resources of member companies to tackle projects and get results. Also, he reviews the study of the effect of copper bonding treatment on signal integrity
A Handy Compilation of Our Top 10 DFM Articles
When we started working on this DFM issue, I searched through our files and found that we’ve published some great DFM articles over the past year or so. While topics like signal integrity tend to get most of the limelight, in the end it all comes down to solid DFM practices. So, without further ado, we present this compilation of our Top 10 DFM articles and columns.
Sales and Marketing with DownStream Technologies
From its inception, DownStream Technologies has been a new kind of software tool company. DownStream’s post-processing tools address one of the most unpopular parts of the design process: documentation. DownStream's CEO Rick Almeida discusses some of his firm’s marketing and sales methods, the trends that he sees, and the influence of the Internet on marketing.
Resins: Five Essentials to Achieve the Right Cure
Last month, I looked at some of the critical things you need to consider before selecting your resin. Of course, when it comes to the choice and application of resins, there’s a lot of information to take in, and over the following months I hope to distill this and provide some useful tips and design advice that will help you in your quest for reliable circuit protection.
SiSoft Discusses Signal Integrity Drivers and Challenges
In the last few years, SiSoft has launched a variety of innovative SI tools that help automate tasks that used to take weeks or months to complete. I recently interviewed CEO Barry Katz via email, and he detailed their customers’ challenges, and some of the market drivers in the world of signal integrity.
Sunstone Circuits Makes Shift in Strategy, Offerings
Sunstone Circuits, the Oregon-based online vendor of quickturn circuit boards, has recently made a shift in capabilities that will enable a move into the RF and microwave space. At PCB West, Publisher Barry Matties caught up with Sunstone’s David Warren, and they discussed details of this change and how they plan to approach such a competitive marketplace.
CAT’s David Wolf on Via Reliability Analysis
Conductor Analysis Technologies (CAT) has been analyzing test panels and coupon designs for over 20 years. CAT’s analysis provides valuable, quantitative data on PCB quality and reliability, which can help designers and manufacturers trace the source of defects and non-uniformities. Vice President of Technical Marketing David Wolf discusses some of the trends he’s seeing in via structures, and the common reliability and quality issues related to vias.
DownStream Technologies: Building the Interface Between Designers and Fabricators
DownStream Technologies founder Rick Almeida speaks with Editor Pete Starkey about building the interface between the PCB designers and fabricators. He gives details on their design software and where most of the design community resides.
Leo Lambert Discusses EPTAC’s Evolving Mission
This month we’ve been dealing with challenges related to being a great manager and a great leader. One of the biggest problems a manager faces is training—getting employees trained, and keeping them current on constantly changing technologies. I asked Leo Lambert, VP and CTO of EPTAC, what his thoughts were on the subject of leadership, and more specifically, what strategies EPTAC embraces with regard to training—both initial and ongoing.
Lightning Speed Laminates: The Blending of High-Speed Digital and High-Frequency RF
When the terms high-speed and high-frequency are mentioned, people think they describe the same issue. But in reality, they can be two very different matters. The term high-speed generally refers to digital technology which transfers data at very high rates. But the term high-frequency is typically related to radio frequency (RF), which involves analog signals moving energy at high frequencies.
Mentor Graphics’ PADS Platform Bridges Design and Manufacturing
At PCB West, Barry Matties spoke with Paul Musto about Mentor’s PADS environment and their introduction of scalable software tools to help design better boards, from the enterprise level down to the entry level and hobbyists. They also discussed the evolution of the design process infrastructure in North America vs. Asia, and what design engineers should focus on to increase their value.
The Shaughnessy Report: Leadership vs. Management
Is your manager one of the great ones, a true leader? Many of your colleagues would probably answer with a pointed “No.” In our reader surveys, we ask, “What is your biggest challenge?” Every time we've posed that question, we received replies along the lines of, “Management doesn’t know what the hell they’re doing.” Some replies are too salty to print.
Freedom CAD: Navigating the Unpredictable Design Marketplace
As COO of the design service bureau Freedom CAD, Scott Miller has a front-row seat to the challenges currently plaguing designers and the design community as a whole. He shared his views with me recently, offering insights on the importance of picking the right partners and customer relationships in an unforgiving and sometimes unpredictable design marketplace.
SnapEDA: Inspiring Millennials in the PCB Design Community
Natasha Baker, founder of SnapEDA, is part of the new breed of entrepreneurs. She manages a group of millennials who are not much younger than she is. Natasha discusses what it means to be a manager vs. a leader, what motivates millennial engineers, and some of the changes in the world of EDA that managers have to contend with to succeed.
Sensible Design: The Little Guide to Resins
I would like to start this series of columns by going back to basics, questioning the core rationale for potting and encapsulation with resins, their fundamental chemistries and how each resin type differs one from the other—indeed, how their individual properties can be exploited to maximise performance under a wide range of environmental conditions.
Quiet Power: Evaluating Evaluation Boards
Evaluation boards are very helpful. Manufacturers of complex circuits such as DC-DC converters provide boards with those circuits ready to try out, saving us time and effort to design the printed circuit board around them. Evaluation boards are supposed to help us to understand the capabilities of the device. But with the many potential user applications, what should a particular user expect and look for in an evaluation board? We need to know how to properly evaluate an evaluation board.
Sensible Design: Conformal Coatings - Beware the Boards that ‘Bare’ All!
This month, Phil Kinner departs from his usual format of providing five essential facts about conformal coatings. Instead, he provides an account of a customer’s problem—no company names mentioned, of course—that brought into question the adhesion performance of a coating that they had been using successfully for some time.
Beyond Design: How to Handle the Dreaded Danglers, Part 1
Dangling via stubs can distort signals and decrease the usable bandwidth of the signal. A via stub acts as a transmission line antenna, and has a resonant frequency determined by the quarter wavelength of the structure. At this frequency, the transmitted signal is greatly attenuated, by up to 3dB. For low-frequency signals, this is not much of an issue, but for higher-frequency signals, this issue becomes a problem.
The Evolution of Altium: Road to a Record-Breaking Year
Chris Donato, VP of sales for Altium Americas, sat down with Judy Warner recently to discuss what he and Altium have been doing lately, where they came from (Australia) and what the future holds for Altium. This company has evolved from flying well under the radar during the acquisition frenzy of the ‘80s, to achieving a record $100 million in sales for fiscal year 2016.
Orange Co. Designers Council Meeting Draws A Packed House
Speaker John Stine, VP of operations at Summit Interconnect’s Anaheim facility, gave a presentation on flex and rigid-flex design and fabrication. At least 75 electronics professionals listened as Stine, an expert in flex and rigid-flex technologies, discussed proper trace geometries, grounding, cover lay, adhesives, signal integrity, impedance control, book-bindings and much more in his 80-minute presentation.
Brooks' Bits: Your Traces Have Hot Spots!
The reasons for the temperature variation at high temperatures are not too hard to understand. There may be minor contamination under the trace or in the copper that accounts for it. Certainly, at higher temperatures (say above about 300°C) the board may begin to delaminate, severely disrupting its cooling characteristics. There may be small variations in trace width or thickness that help account for the delam, and these effects would be randomly distributed along the length of the trace.
Sensible Design: When Coatings Go Wrong
This month, I consider some of the more common, and often very frustrating, problems that may be encountered when coating electronic circuit boards and components. I also discuss some practical solutions. As we all know, nothing in life is straightforward.
Signal Integrity Tools and Design Methodology in the Modern Age
The PCB design process has traditionally been done in silos. One group creates the design intent (schematic), another group implements the logic on the PCB, and yet another group does some checking of the design using analysis tools. This traditional approach has run into a number of problems.
New SI Techniques for Large System Performance Tuning
In this DesignCon paper, Donald Telian of SiGuys and Michael Steinberger and Barry Katz of SiSoft describe newly-developed techniques for equalization tuning and discontinuity reduction, offering additional design margin. Cost reductions are also achieved as new signal integrity techniques demonstrate performance parity, removing non-essential re-timers and PCBs layers.
Software Bytes: Having Fun With Impedance
About a year ago, I was assigned a new project: become an expert in impedance, more or less. I had no idea how much this research would bring out the nerd in me. Even if you don’t typically design controlled-impedance circuit boards, you probably will eventually. Read on!
Mentor Video: Impact of Power Integrity on Temperature
One of the most common outputs from a DC Drop simulation is a current density plot. But how much is too much current density? The answer depends on temperature rise, and requires a PI-thermal co-simulation to properly characterize.
Getting Signal Integrity Right by Design
As clock frequencies increase and active devices and interconnect traces shrink and are placed ever closer together, signal integrity becomes an increasing challenge. Today, SI is typically addressed late in the design process after the PCB layout has been completed by performing complex and time-consuming 3D extractions and simulations for high-speed lines. But with little attention being paid to SI during the layout process, simulation frequently identifies numerous SI problems.
Beyond Design: Mastering “Black Magic” with Howard Johnson’s Seminars
Dr. Howard Johnson, the world’s foremost authority on signal integrity, has recently released his High-Speed Digital Design (HSDD) Collection. I recently reviewed all three of the seminars in this collection, a total of 36 hours of viewing time. If you want to gain some of Dr. Johnson's enthusiasm and master the art of high-speed design, then the collection is a must-have.
Designing With Tighter Tolerances
David Ledger-Thomas is a PCB design engineer with Honeywell Aerospace. He’s spent decades designing PCBs for a variety of applications, including defense, aerospace, computers, and high-performance audio. I asked David to share some of his thoughts on designing high-tech boards with increasingly finer spaces, traces and pitch.
Lightning Speed Laminates: The Dilemma--Soldermask for High-Frequency PCBs
Typically, PCBs with RF traces on the outer layers have minimal or no soldermask in the RF circuitry areas. Many times the soldermask is applied in areas where components are soldered to the PCB but the soldermask is developed away in the areas where conductors have critical RF performance. There are many reasons to avoid soldermask coverage on RF conductors, due to inherent soldermask properties.
Taylor Guitars Protected with Analog, RF Circuitry
Trenton Blizzard is an electrical engineer at Taylor Guitars and part of the team that developed the TaylorSense shock and climate change protection system. At the NAMM show, Trenton spoke with me, along with Editors Dick Crowe and Dan Feinberg, about this new device, and what it’s like being an electrical engineer for a “woodworking shop.”
The State of the Electronic Design Automation Nation
We are the automation nation. We are the high-speed demons, the low-frequency artists, the mixed-signal designers that make up the electronic design automation industry. We spend most of our working lives behind software, delivered to our fingertips with the promise of making things easier, faster, better, and getting us to our deadlines ever faster.
Sensible Design: Coatings—Five Essentials for Designers
In an ideal world, PCB designs would not have an inherent weak point for corrosion; unfortunately, in the real world, they do. When a weak point is revealed, you are better equipped to deal with it. Often the spacing of components, board finish and distance to ground planes can be optimised for corrosion resistance.
Changing the World of PCB Rapid Prototyping
Tony Tung is a recent graduate from Taiwan who has come up with a new way for PCB designers and makers to create breadboards using printed paper circuits. I caught up with Tony at the recent San Mateo Maker Faire and sat down with him to learn more about this project.
EIPC Summer Conference 2016, Day 1: Strategies to Maintain Profitability in the European PCB Industry
Resplendent in the kilt, EIPC chairman Alun Morgan welcomed a large and enthusiastic gathering of printed circuit professionals from all over Europe and as far afield as the USA, Canada and Russia, to the EIPC Summer Conference 2016 in Edinburgh, Scotland's cosmopolitan capital city.
The Shaughnessy Report: The Designer Roundtable Roundup
Every year, I attend SMTA Atlanta, just across town. You have to love a local trade show. No airlines, no jet lag, and no hotels. It’s a small show; it would fit in a school gymnasium. But for me, the highpoint of SMTA Atlanta is the Designers Roundtable. This year the roundtable had 15 attendees, up from 12 last year. Two of the new attendees were under 35, which surprised all of us "graybeards."
Beyond Design: DDR3/4 Fly-by vs. T-topology Routing
JEDEC introduced fly-by topology in the DDR3 specification for the differential clock, address, command and control signals. The advantage of fly-by topology is that it supports higher-frequency operation, reduces the quantity and length of stubs and consequently improves signal integrity and timing on heavily loaded signals. Fly-by topology also reduces simultaneous switching noise (SSN) by deliberately causing flight-time skew.
SiSoft: Optimizing the State of the Art
In the 20 years since its founding, SiSoft has been at the forefront of signal integrity analysis tool development. Now, the company is leading the way with a new technology called OptimEye and tools for creating accurate IBIS-AMI models. Todd Westerhoff, VP of semiconductor relations, gives us an update on the company’s newest technologies.
EMA is Bullish on Data Management
EMA Design Automation has evolved over the years, from a typical Cadence Design Systems VAR to a distributor that functions more like a part of Cadence. During DesignCon, I met with Greg Roberts, director of marketing for EMA, and asked him to discuss the company’s focus on data management tools, and why he’s giving away certain OrCAD tools.
Beyond FR-4: High-Performance Materials for Advanced Designs, Part 1
In the past 40-plus years of PCB manufacturing, the primary material of choice has overwhelmingly been e-glass supported FR-4 resin laminates. This is due to the excellent dimensional stability and reasonably acceptable thermal performance (based on glass transition temperature [Tg] and decomposition temperature [Td]). In general, these materials exhibit impressive performance and excellent cost for a wide range of applications.
RTW IPC APEX EXPO: Mentor Graphics Takes Manufacturing Operations to the Next Level
Dan Hoz, general manager of Mentor Graphics Valor Division, discusses with I-Connect007's Andy Shaughnessy how they are helping electronics manufacturers take their operations to the next level through their Valor IoT Manufacturing solutions. He talks about the OML and the Valor IoT Device, and how these solutions will help the electronics manufacturing industry to move to Industry 4.0.
Tim's Takeaways: The Principles of Hybrid Design, Part 1
What exactly is a hybrid design? We are seeing more and more of our customers exploring the world of hybrid design, and we are getting new customers for whom hybrid design is their sole focus. The world of hybrid design is growing and we have lots of hybrid-specific functionality built into our software that helps designers conquer the unique hybrid design requirements.
Wild River: Simplifying SI so Engineers Can Focus on Design
Al Neves is founder and chief technologist of Wild River Technology, and he’s a signal integrity engineer who likes to tell it like it is. So when I bumped into Al during DesignCon, I asked him to sit down for an interview. We discussed the paper he co-wrote for DesignCon and the challenges SI engineers are facing, as well as Wild River’s efforts to take the black magic out of signal integrity.
RTW IPC APEX EXPO: HDP Users Group Update with Jack Fisher
Jack Fisher, technical director for the High-Density Packaging Group, discusses the latest projects that the consortium is focusing on. He explains that member companies have full access to all of the R&D data that is developed. One of the group's most interesting current efforts involves optoelectronics.
Steinberger Talks PAM4, the Next Generation of Modulation
I recently interviewed our old friend Michael Steinberger, SiSoft’s lead architect for serial channel products. Steinberger is always a great interview; he breaks down complex signal integrity simulation technology in ways that are simple and often humorous. Steinberger sat down and discussed a paper he presented at DesignCon, and some of the challenges his customers are facing.
RTW IPC APEX EXPO: Mentor Graphics Makes Internet of Manufacturing Affordable
Michael Ford, marketing development manager at Mentor Graphics, and I-Connect007 editor Andy Shaughnessy discuss the Open Manufacturing Language (OML), the challenges in supporting the hundreds of thousands of machines that are out there at shopfloors already, and how Mentor is making the Internet of Manufacturing affordable for everyone in the PCB assembly supply chain.
What’s New at Cadence?
Cadence Design Systems has released a variety of PCB design tools lately, and we wanted to find out a little more about what’s new at Cadence. I tracked down Product Marketing Director Brad Griffin and asked him to discuss some of the newest technology coming out of Cadence.
IPC APEX EXPO: Electrolube to Educate PCB Designers on Coatings
Phil Kinner, technical director of coatings for Electrolube, discusses a paper on condensation testing that he presented at IPC APEX EXPO, and his plans to educate PCB designers about conformal coatings to help them avoid problems during manufacturing.
The PDN Bandini Mountain and Other Things I Didn’t Know I Didn’t Know
Originally, Bandini Mountain referred to a mound of fertilizer built by the Bandini Fertilizer Company in California prior to the 1984 Los Angeles Olympics. When the company went bankrupt, this mound of fertilizer was left behind. Steve Weir coined this term to describe the large resonant frequency peak formed by the parallel combination of the on-die capacitance and the package lead inductance, as seen from the die looking into the PDN.
IPC APEX EXPO: Hofer Discusses the Pros and Cons of Backdrilling
General Manager James Hofer of Accurate Circuit Engineering discusses the process of backdrilling vias, including the benefits and drawbacks. Backdrilling can improve signal integrity, but it can also create stubs that may act as unwanted antennas.
IPC APEX EXPO: Clyde Coombs Discusses the New Printed Circuits Handbook
In this interview that was shot during the IPC APEX EXPO 2016 in Las Vegas, Nevada, Clyde Coombs discusses the latest edition of the Printed Circuits Handbook, which was published this week. The seventh edition, co-edited with Happy Holden, includes new sections on supply chain management and PCB design, with a chapter on EDA tools by Design007 Editor Andy Shaughnessy.
Mark Thompson: It’s All About Communication
In engineering support at Prototron Circuits, Mark Thompson has seen it all. He ensures that each design is manufactured the way the designer intended, even if the CAD data is not crystal clear. During DesignCon, Barry Matties and Andy Shaughnessy talked with Thompson about why communication is paramount when designing and prototyping boards. Thompson also explained how designers can avoid making common mistakes that can set back an entire project.
Mentor Graphics’ Oren Manor Explains Exactly What Industry 4.0 Brings to Manufacturing
Oren Manor of Mentor Graphics talks about what Industry 4.0 is really about, and how it benefits electronics manufacturers. He also discusses their design to manufacture solution, and how it helps OEMs large and small make the transition to Industry 4.0 without a complete factory overhaul.
Technology Outlook with Mentor Graphics
Mentor Graphics recently announced the winners of its PCB Technology Leadership Awards. Now in its 26th year, this program provides a great barometer for measuring the newest trends in cutting-edge PCB designs. I caught up with Product Marketing Manager David Wiens and asked him to give us an idea of the trends he’s seeing in PCB design and manufacturing, and what the industry has in store for us in the next few years.
DuPont, Taconic and PFC Team Up For High-Speed Flex
At DesignCon, I sat down with three flex circuit specialists: Glenn Oliver of DuPont, Tom McCarthy of Taconic, and Steve Kelly of PFC Flexible Circuits. Our discussion covered a lot of territory, most notably the findings they described in the paper they were about to present later that day at DesignCon, and the future of flex, as they see it.
Designers Notebook: Flex and Rigid-Flex Circuit Design Principles, Part 2
In this installment of "Designers Notebook," Vern Solberg discusses supplier assessment, planning of the flexible circuit outline, and various circuit routing principles. Communication between designer and fabricator is paramount, as well as an understanding of IPC-2223, which sets the specific requirements for the design of flex circuits.
Innovative Circuits Sees Healthy Medical Market
Medical electronics is one of the fastest growing segments of our industry. Alpharetta, Georgia-based Innovative Circuits is at the forefront of fabricating medical PCBs, both flex and rigid. I asked Innovative Business Development Manager Amir Davoud to give us a solid diagnosis of the world of medical PCBs.
Medical PCB Design: Not Just Another High-Rel Board
Some of the coolest new electronic products have come courtesy of the medical market. I wanted to find out more about this fast-growing segment, so I contacted Kenneth MacCallum, an engineering physicist with StarFish Medical. MacCallum, an engineering physicist who designs PCBs for medical applications, explained why medical PCBs are not quite like other high-reliability boards.
Designers Notebook: Flex and Rigid-Flex Circuit Design Principles, Part 1
In his new Designers Notebook column, Verb Solberg discusses primary flex circuit structures, proper design for operating environment, and base material selection. The design guidelines for flexible circuits, although similar to those for rigid circuits, have distinctive differences that are influenced by specific applications and the intended operating use environments. Communication with your fabricator is paramount when designing flex and rigid-flex circuits.
Lightning Speed Laminates: Why Do Different Test Methods Yield Different Electrical Values?
A variety of different test methods may be used for any one electrical concern. This article will discuss the issues related to determining the dielectric constant (Dk) and dissipation factor (Df or Tan-Delta). On a data sheet, a designer may see a Dk value for a material to be 3.5, as an example. Once the designer buys the material and performs necessary evaluations, it may be found that the Dk of the material is 3.8. In some applications this difference in Dk is probably not meaningful; however, for many RF and high-speed digital applications, this difference could be very significant.
Electrical Design Challenges for Automotive PCBs
A recent article in this magazine by Monica Andrei of Continental Automotive Systems emphasized the systemic nature of an automobile and discussed the characteristics and adoption of software design tools to enable such system-level design. Recognizing that electrical challenges are part of the automotive system-level discussion, this article will present more detail on signal integrity. Future discussion is planned regarding EMI, power integrity, and thermal integrity.
McCurdy: How to Build a Successful IPC Designers Council Chapter
When Scott McCurdy made his transition from PCB fabrication to a PCB layout focus about 13 years ago, he accepted an invitation to attend our local IPC Designer’s Council. Shortly after, he was recruited to serve on the group’s steering committee. At that time, 20–25 people were regularly attending the meetings. When the chapter president moved, he asked Scott to take his place. Now, Orange County chapter meetings often draw close to 100 attendees.
Beyond Design: Plane Crazy, Part 1
A high-speed digital power distribution network (PDN) must provide a low inductance, low impedance path between all ICs on the PCB that need to communicate. In order to reduce the inductance, we must also minimize the loop area enclosed by the current flow. Obviously, the most practical way to achieve this is to use power and ground planes in a multilayer stackup. In this two-part column, I will look at the alternatives to planes, why planes are used for high-speed design, and the best combination for your application.
IPC Designers Council Viewpoint: Rick Hartley
Rick Hartley has been in involved in PCB design and design education for decades, so it’s no surprise that he started working with the IPC Designers Council early on. Now retired from his day job at L-3, Rick still teaches PCB design and shows no sign of slowing down. I asked him to discuss his work with the Designers Council, and what the group means to the design community.
Mentor Graphics: The Past, Present and Future of Analytics
Farid Anani, consulting manager with Mentor Graphics' Valor Division, discusses with I-Connect007's Andy Shaughnessy a paper he presented at SMTAI that focused on analytics and how it can be used to increase business revenue. He also talks about how far analytics has come in the last 20 years and where it may be headed in the future.
The Key to Understanding Industry 4.0: Show, Don’t Tell!
At the recent productronica event in Germany, Mentor Graphics set up a racecar track in their booth. In an interview with I-Connect007, Michael Ford, senior marketing development manager at Mentor's Valor Division, explains why it's a perfect analogy for understanding Industry 4.0.
Rogers Scales up Production and Integrates Arlon Range
Editor Pete Starkey interviews Rogers European Sales Manager John Hendricks at productronica 2015. Hendricks updates us on Rogers’ acquisition of Arlon, and explains how the Arlon products are complementary to Rogers’ existing materials.
Pulsonix Poised to Take More EDA Market Share
Publisher Barry Matties met with Bob Williams, managing director and co-owner of Pulsonix, and Sales and Marketing Manager Tyrone Stephens to discuss the challenges facing the EDA tool market, and how they’re establishing this company in the global design tool marketplace.
SnapEDA: The Female-Owned Startup Revolutionizing CAD Data
SnapEDA founder Natasha Baker may mark the beginning of a new trend in EDA: young female entrepreneurs. (When was the last time we heard about an EDA startup?) As her company prepared for a major launch, Natasha took time to explain the philosophy behind SnapEDA, and how the company is helping designers and engineers manage an ever-increasing volume of CAD data.
Orange County IPC Designers Council Meeting Draws Record Crowd
On November 18, the Orange County Chapter of the IPC Designers Council held a “Lunch ‘n’ Learn” event at the Harvard Park Community Center in Irvine, California. Eighty-nine PCB designers and electronics industry professionals gathered to listen to a talk by Chris Heard, a signal integrity engineering consultant at CSH Consulting LLC.
Speeding up the Design Cycle: 10 Things to Remember
Many people understand the value of a PCB, but do not understand the best way to interact with PCB manufacturers. Poor planning and communication with fabricators slows down the design cycle and increases overall costs for your project. In this column, Mark Thompson streamline the design cycle through fabrication. Following my tips will minimize the need for future revisions and ensure you get quality boards on time.
Arlon’s John Wright Discusses New High-Performance Materials
During productronica, European Editor Pete Starkey interviewed Engineering/Quality Manager John Wright of Arlon. They discussed Arlon’s new 85HP ceramic-filled polyimide, as well as a non-woven aramid material, suitable for space applications, that is a drop-in replacement for a similar material discontinued by a competitor in 2006.
Accelerating the PCB Design Cycle
An area of communications that is often underappreciated, but has become vitally important to design efficiency, is the dialogue with the PCB fabricator. It’s critical to engage the fabricator very early in the design process to nail down the proper materials and stack-up. With so many options for via structures, it is critical to select the most appropriate structure for the design. Adding blind and/or buried vias as an afterthought can limit their utilization and drive up the printed circuit board cost.
Accelerating the Design Cycle : Moving from Discipline-Centric to Product-Centric Design
Today, the design process in most cases fans out from the requirements as defined by marketing into multiple independent design threads that converge at the prototype. There is usually no systematic method for these different disciplines to communicate their work to the other disciplines. This lack of communication often leads to conflicting design decisions, such as when an electrical engineer or purchaser selects a component without having any way of knowing that it interferes with the enclosure. Extra design turns are often needed to resolve these conflicts at the prototype stage.
Flex Circuit Shielding Design Options
Shielding may not be your company’s number one design concern when thinking about your interconnect designs. But if you have to shield circuits for EMI, then you will need to depend on your supplier to assist you with their favorite shielding technique and experience.
The Challenges of Being Competitive in Automotive Electronics Manufacturing
Simple electronics were gradually introduced into automobiles from the earliest times. At first, these were just simple electro-mechanical devices to make cars work without manual effort, such as to start the engine and keep windshields clear. But in this past decade, we have seen the effects of the gradual growth of issues with electronics systems, with recalls caused by safety issues that cost automotive manufacturers millions of dollars. Electronics within an automotive environment today requires a new approach to ensure a higher level of quality perfection.
The Shaughnessy Report: Car Talk
The automotive electronics segment has exploded. Early cars didn’t have much in the way of electronics. Even in 1950, electronics made up only 1% of a car’s cost. But that figure is expected to hit 35% in 2020, and 50% in 2030. The global automotive electronics market is forecast to hit $314.4 billion by 2020, and that means a whole lot of PCBs.
Leo Lambert on EPTAC's Customized Training Plans
Andy Shaughnessy interviewed Leo Lambert, vice president and technical director of EPTAC, at SMTA International. Leo Lambert, vice president and technical director of EPTAC, explains how the New Hampshire-based company continues to provide customized training and IPC certification offerings, including its IPC Certified Interconnect Designer (CID) and CID+ classes.
Jack Pattie Discusses New Ventec Facility
Jack Pattie, CEO of Ventec USA, discusses the company's newest laminate facility, which recently opened in Northern California. He explains how this location, the company's fourth, will help Ventec better serve customers in that region.
Automotive Systems Design: a Support Engineer’s Perspective
In a nutshell, the promise of the system design approach is to allow for hitting the “sweet spot” in terms of functionality, quality and reliability, in the shortest possible design time and with the lowest possible resource investments. In an industry that has a very long time to market (on average around 1,000 days), steadily increasing quality demands and an ever intensifying pressure to lower costs, all these promises become most attractive and compelling.
Failure Mode: Hole Wall Pullaway
This column is based on my experience in test reliability of interconnect stress test (IST) coupons. I am addressing HWPA that features moderate to severe outgassing. There may be HWPA due to thermal stressing of the board without any significant outgassing, but this type of HWPA is subtle, and it presents as a dark line between the plating and the dielectric of the hole wall. This type of HWPA is rarely detected.
Material Witness: Using Scaled Flow Data
Resin systems whose density is not very near 1.35 do not quite fit into the official IPC test method because all the stack weight data used assumes epoxy resin of a standard 1.35 density. Any resin whose density varies from that value requires a new set of calculated weights for various stack-ups in order to provide precise data. This is especially true of filled systems whose resin density now includes a ceramic component as well as the organic resins themselves and may have densities higher than standard.
Nick Barbin: From Designer to EMS Company Owner
Many PCB designers would rather do just about anything than pore over a P&L spreadsheet. But Nick Barbin isn’t a typical designer. He co-founded the design bureau Optimum Design Associates over two decades ago, and the company later expanded into contract manufacturing and Lean processes. In this interview, Nick discussed how he wound up leading an EMS company on the Inc. 5000 list.
Design and Manufacture of High-Voltage Electronics
This SMART Group webinar, presented by Ian Lake, director of engineering at Applied Kilovolts Ltd, and moderated by Bob Willis, explored the current technical barriers faced in high-voltage electronics design and manufacturing processes. Although he made it clear that within the timeframe of a webinar session he could only scratch the surface of the topic, Lake gave a valuable insight into basic concepts and drivers and set a perspective on current state of the art and future trends.
Fast Interconnect: Engineering Services for the Masses
Gary Griffin and Ana Rosique are co-founders of Fast Interconnect, an Arizona-based product engineering company designed to serve an underserved market: the small product developers, inventors, and anyone with an idea for a “cool gadget.” I caught up with Griffin recently to discuss the new company, its innovative business model, and the challenges facing smaller OEMs and product developers.
Changing the Face of Displays…One Button at a Time
Michael Detarando, president and CEO of Incom, and Emilijo Mihatov, business development manager at Fairlight discuss with I-Connect007's Barry Matties how Fairlight is incorporating Incom's technology into their famous products for the recording and broadcast industries, along with other applications such as elevator control panels.
Avoid Overbuilding your RF Printed Circuit Board
Today, many companies are overbuilding and “overmaterializing” their RF printed circuit boards. In this interview, James Hofer of Accurate Circuit Engineering (ACE) shares some strategies to avoid doing both, which will help lower the total cost of your PCB and improve the overall product quality. Hofer also discusses some of the challenges in the laminate supply chain.
Rigid-Flex PCB Right the First Time--Without Paper Dolls
The biggest problem with designing rigid-flex hybrid PCBs is making sure everything will fold in the right way, while maintaining good flex-circuit stability and lifespan. The next big problem to solve is the conveyance of the design to a fabricator who will clearly understand the design intent and therefore produce exactly what the designer/engineer intended.
TTM: Consult Fabricators Early for PCB Designs
Recently, I attended the Designers Council “Lunch and Learn” at Broadcom’s office in Orange County, California. One of the speakers at this event was Julie Ellis, a field applications engineer with TTM Technologies. She sat down with me to discuss her presentation and some of the ways fabricators can assist PCB designers.
Cannonball Stack for Conductor Roughness Modeling
In the GB/s regime, accurate modeling of conductor losses is a precursor to successful high-speed serial link designs. Failure to model roughness effects can ruin your day. The cannonball stack is an example of a cubic close-packing of equal spheres, and is the basis of modeling the surface roughness of a conductor in this article. So, what do cannonballs have to do with modeling copper roughness anyway? Bert Simonovich explains.
The Composite Properties of Rigid vs. Multilayer PCBs
Most materials systems used in PWBs (aka PCBs) are composites of resins, fabric substrates and metal cladding. Each of these components has its own unique electrical and mechanical properties that contribute to the final characteristics of the finished laminates, prepregs and fabricated multilayer boards (MLBs). In most cases variables such as glass style and resin content have offsetting impacts on physical vs. electrical properties. Chet Guiles explains.
Broadcom PCB Design: Miniaturization on the Cutting Edge
Editor Andy Shaughnessy recently attended the Orange County Designer's Council “Lunch and Learn” meeting, held at the Broadcom offices on the campus of the University of California, Irvine. Afterward, he sat down with Scott Davis, CID, the senior manager of PC board design at Broadcom, to discuss the company’s savvy PCB design department and their approach to PCB design.
Polar Talks Impedance Control and Insertion Loss Testing
During IPC APEX EXPO, Guest Editor Dan Feinberg sat down with Polar Instruments product specialists Michael Bode and Geoffrey Hazlett to talk about the company and its products and solutions. They also discussed some of the signal integrity technologies being enabled by the company, including controlled impedance and insertion loss testing.
BGA or CGA: When Is It Right for You?
In this interview with TopLine President and Founder Martin Hart, I-Connect007 Publisher Barry Matties focuses on column grid array (CGA) and how CGA can solve delamination problems. CGAs, also known as CCGA, are not necessarily new but are making a strong comeback in the high reliability market.
An Optical Update with TTM
Barry Matties recently met with Marika Immonen, manager of R&D optical interconnects at TTM Technologies. They last spoke one year ago. This time, they discussed the optical project that she’s been leading, as well as the future of optical technology in the PCB industry.
Multek CTO Excited About the Challenges of the Fast-Moving Wearables Market
I-Connect007 Publisher Barry Matties and recently-appointed Multek CTO Dr. Joan Vrtis sat down at IPC APEX EXPO to discuss the rapidly evolving wearables market, especially for medical, and the myriad questions that must be addressed. Other topics include Multek’s contribution to the wearables industry and what it sees as the main challenges to putting their circuits into various applications.
Reliability and Harmonization of Global Standards at Forefront of EIPC Efforts
At IPC APEX EXPO 2015, I-Connect007 Technical Editor Pete Starkey caught up with EIPC's Michael Weinhold and Alun Morgan, who were happy to discuss both recent and ongoing focuses for EIPC, namely, reliability. Also touched on was the importance of the alignment of global standardization processes, especially for Asia.
Panasonic Meeting Market Needs with Higher-Performance Megtron 7
I-Connect Technical Editor Pete Starkey sat down with Panasonic’s Tony Senese and Tomoyuki Abe at IPC APEX EXPO 2015 in San Diego--and high-speed digital materials, particularly those with very low-loss characteristics, was the focus of their discussion. Also noted were the positive responses from chemical process suppliers, and the realistic length of a product development cycle.
Effective Characteristic Impedance
Reflections can occur anytime there is an impedance mismatch on the line. Sources of mismatches are plentiful and include trace width changes, vias, stubs, reference plane changes, and even the so-called fiber weave effect. In this case, a trace can encounter a different dielectric constant depending on whether it is routed over glass or the epoxy resin in the dielectric material. In this investigation by Kirk Fabbri, it is the capacitive contribution of the different components that are of interest, and how they affect the characteristic impedance the driver sees.
Cirexx Introduces Eclisp, An Alternative to Co-fired Ceramics
Al Wasserzug, SR Business Development Exec at Cirexx, talks about their new product, Eclisp. Developed in conjunction with Lockheed Martin, Eclisp is an alternative to co-fired ceramics and used to evacuate heat very efficiently with a low CTE. Wasserzug gave a paper on the new technology at IPC APEX EXPO.
Cadence’s Brad Griffin Digs Deep Into DDR
During DesignCon 2015, our roving reporter, Kelly Dack, stopped by to visit with Brad Griffen in the Cadence booth. What follows is their very interesting conversation that revolves around the evolution of DDR.
CES 2015: Preview and Predictions
Looking back over the last five years of CES and analyzing predictions and items featured by the large exhibitors, you'd likely assume the 2015 show would feature more advanced 3D TVs, as they were predicted to take over the market...wrong!
Thermal Characterization of LEDs: Enabling the Upcoming Lighting Revolution
This article describes a method that combines hardware measurement (a thermal transient tester), and computational fluid dynamics (CFD) software to provide high measurement throughput, which enables systems integrators to verify a vendor’s thermal resistance data during design and to test incoming commercial off-the-shelf parts before they are introduced into production.
Press Release Tips
Copyright © 2018 I-Connect007. All rights reserved.