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EMA President Manny Marcano: EDA Tools Are Essential
04/03/2020 | Andy Shaughnessy, I-Connect007
I-Connect007 Survey: DFM, Signal Integrity Knowledge Most Important Job Criteria
04/03/2020 | I-Connect007 Research Team
Arlon Takes on High-Power Failure
04/02/2020 | Real Time with...IPC
The Formation of the Printed Circuit Engineering Association
04/02/2020 | Patty Goldman, I-Connect007
Advances in Medical Diagnostics Using LoC and LoPCB Technologies
03/31/2020 | Pete Starkey and Happy Holden, I-Connect007
Design :: Certifications
EMA President Manny Marcano: EDA Tools Are Essential
In this interview, Editor Andy Shaughnessy speaks with Manny Marcano, president of EMA EDA Automation, who shares an update on the company's current level of business operations under COVID-19 restrictions. Marcano explains that EMA is classified as an essential business due to its work with the defense segment and that employees are now working from home. He also discusses the company's free work-from-home license offer and why he is available to help any designers or design engineers who have questions during these changing times.
Multi-board Etching: Managing Rigid-Flex Designs and Conductivity
Good troubleshooting techniques involve considering a system as individual parts rather than as a whole. The same techniques apply to your work with multi-board PCB designs. Each board consists of a single unit that has its own lifecycle. Some product designs may use a single PCB design for multiple functions or for multiple devices. Others may interconnect multiple PCB designs to produce a complete, fully functional system.
This Month in Design007 Magazine: Mentor—Managing Small Problems for Profitability
At DesignCon, I met up with Todd Westerhoff, product marketing manager for highspeed design at Mentor, a Siemens Business, to discuss common design profitability issues and cost-aware PCB design. He explains how simple problems can “slip through the cracks” and cause delays, what you can do, and how first-order analysis can make simulation accessible to designers who wouldn’t simulate otherwise.
Watch & Learn! Latest Installment of I-007e Micro Webinar Series Features EV Charging Controller Case Study
The eleventh episode of the popular micro webinar series “Coatings Uncoated!” is now available to view. In “Cycle Time Constrains Coverage,” topic expert Phil Kinner from Electrolube examines the trade-off between cycle time and coverage required while considering an electric vehicle charging controller case study. If you are in the assembly business, an EMS company, or responsible for specifying conformal coating and/or encapsulation, then this free series is for you.
Publish Your Work, Become an Industry Leader
I recently met with Bert Simonovich, founder of Lamsim Enterprises, to discuss a new mentorship program and panel discussion at DesignCon, where veteran authors of technical papers mentor new authors through the process. Bert explained the benefits of publishing technical papers and shared Wayne Gretzky’s advice for any engineers or technologists who are considering publishing their technical work.
Design007 Survey: Profitability in Your Design Process
In a recent survey, we asked the following question: What part does profitability play in your PCB design planning process? Here are a few of the comments, edited slightly for clarity.
I-Connect007 Researchers Survey Industry on COVID-19 Outbreak Effect
In the last 24 hours, we surveyed our readers regarding the coronavirus (COVID-19) outbreak and its effect on our industry. After reviewing the first 100 survey responses primarily from North America and Europe, one-third of the respondents reported that the outbreak was having at least a small effect on their orders. Two-thirds of our readers have yet to see any effect on their orders.
Avoiding EMI Problems With Lee Ritchey
The I-Connect007 team met with design expert Lee Ritchey to pick his brain on EMI (electromagnetic interference) problems and what can be done to minimize them. Lee explains the issues are almost always tied to power delivery, as well as the abundant amount of misinformation surrounding this topic.
AT&S: Working With Designers on a Global Level
Barry Matties recently took a tour of AT&S’s Austrian factory, which is developing new circuit design strategies surrounding embedded and active components. Gerald Weis discusses the company’s focus on serving and educating PCB designers around the world, as well as their plans to embrace the latest technology and Industry 4.0 processes going forward.
Are ISO Procedures Strangling Innovation?
Andy Shaughnessy recently spoke with Quantel’s Roger Beers, who voiced his concerns about the struggles engineering departments face when dealing with new technologies within ISO procedures. While great for repeatable processes, Roger says ISO in its current state may be preventing engineering growth.
Chris Banton is Bullish on New Tech
Chris Banton is the director of marketing for EMA Design Automation. He and Andy Shaughnessy discuss the need to train the next generation of designers, advent technologies like AI and machine learning, and why companies like EMA are using these advancements to help designers with today’s complex PCBs.
Curtis Scott Opens the Blinds on PCB Design
I recently spoke with Curtis Scott, a young PCB design engineer with Current Products, a manufacturer of automated window coverings in Pensacola, Florida. I’m always excited to hear about OEMs in Pensacola; I lived there for 17 years, and it’s a great town, but you won’t find much industry other than tourism. I asked Curtis to share his thoughts on the industry and his job designing PCBs in that scenic city on the Gulf of Mexico.
Bryan LaPointe: A Great Time to Be Working With Technology
I recently interviewed Bryan LaPointe, a product engineer with Cadence Design Systems, and one of the younger people in the world of PCB design and EDA tools. I asked Bryan to discuss some of the challenges technologists are facing in PCB design and engineering, as well as some of the things that make this field so exciting right now.
Traversing the Design Landscape With Hartley and Creeden
Design instructors Rick Hartley and Mike Creeden recently spoke with the I-Connect007 Editorial Team about the current landscape of the PCB design segment. This wide-ranging conversation also focused on the next generation of designers, some promising new laminates, and the need for more communication and collaboration between designers and fabricators.
Words of Advice: Making Life Easier for Fabrication and Assembly
In a recent survey, we asked the following question: What steps do you take to make the job easier for your fabrication and assembly providers? Here are a few of the answers, edited slightly for clarity.
Digi-Key on Adapting to the Changing Industry Landscape, Pt. 1
The I-Connect007 editorial team recently spoke with Chris Beeson, executive vice president of global supplier and new business development at Digi-Key Electronics, about trends and the changing landscape of the industry. Beeson describes how Digi-Key is looking to continue growing its user community as a design service provider while providing greater services for the entire PCB.
Book Review: The Printed Circuit Designer’s Guide to…Executing Complex PCBs
If you are serious about designing complex PCBs (most designs today are far from elementary) and even more serious about doing it right the first time, then this is the book for you. Loaded with guidelines for designing cutting-edge PCBs, this book is filled with real-world examples and tips, tricks, and techniques by some of Freedom CAD’s most experienced designers.
Words of Advice: 5G Reliability
In a recent survey, we asked the following question: Do you think 5G will improve the reliability of communication? Here are a few of the answers, edited slightly for clarity.
Why Does the PCB Industry Still Use Gerber?
Every so often, I hear technologists ask why so many PCB designers still use Gerber. That is a fair question. Ucamco has over 35 years of experience in developing and supporting cutting-edge software and hardware solutions for the global PCB industry. Our customers—small, medium, and large PCB fabricators—include the electronics industry’s leading companies, and many of them have been with us for over 30 years. We are dedicated to our industry and excellence in everything we do, which includes our custodianship of the Gerber format.
Design For Excellence: Karen McConnell on Standards
During the IPC Summer Meetings, I spoke with Karen McConnell, senior staff CAD CAM engineer with Northrop Grumman Mission Systems. Karen is a veteran PCB designer as well as an IPC committee chair and mentor. She offered an update on some of the IPC committees she chairs, the need for more mentor programs in this industry, and why you can call something a ham sandwich if you define it correctly in the standard.
Insertion Loss Performance Differences Due to Plated Finish and Circuit Structure
Data will be presented for loss versus frequency for six different plated finishes commonly used in the PCB industry, and opinions will be offered as to why the loss behavior differs for the different plated finishes and for the different circuit configurations. Because the insertion loss of high-frequency circuits also depends on substrate thickness, circuits fabricated on substrates with different thicknesses will be evaluated to analyze the effects of substrate thickness on insertion loss.
John Michael Pierobon Discusses His Flex Design Class
If you’re new to flex design, you might want to check out an online course offered by All Flex, a flex fabricator. The course, Designing Flexible Circuits, was created by John Michael Pierobon. I asked John Michael to discuss his flexible circuit design course, and whether online curriculum can ever replace good old-fashioned live instruction.
Insulectro and DuPont Experts Talk Flex Design
I recently spoke with Insulectro’s Chris Hunrath and DuPont’s Steven Bowles at the DuPont Technology and Innovation Center in Sunnyvale, California. We discussed a variety of topics related to flex design, including the support structure that’s needed in flex design, the everchanging world of flex materials, and the need for working with a flex fabricator as early as possible in the flex design cycle.
Joe Grand Brings a Hacker Outlook to PCB Design
From designing his own mischievous gadgets to testifying on Capitol Hill and starring in his own Discovery TV show “Prototype This!” Joe Grand has lived a hacker’s life. I spoke with Joe about his upcoming keynote at AltiumLive in San Diego, “When Hacking and Engineering Collide,” which will focus on the lighter side of engineering and the benefits of thinking like a hacker. Can Joe convince PCB designers to adopt a hacker’s outlook?
Pulsonix Is Bullish on Next-gen Designers
During a recent trip to the U.K., Barry Matties spoke with Bob Williams, the managing director of Pulsonix, about training the new generation of designers. He explained how the company reaches out to local high schools, colleges, universities, and user groups to advocate for careers in PCB design and manufacturing.
Interconnect Reliability Correlation With System Design and Transportation Stress
Interconnect reliability is very critical to ensure product performance at predefined shipping conditions and user environments. Plating thickness of the compliant pin and the damping mechanism of electronic system design are key success factors for this purpose. This paper discusses design variables—such as pin hard gold plating thickness, motherboard locking mechanism, and damping structure design—to ensure interconnect reliability.
Development of Flexible Hybrid Electronics
This article will present a hybrid manufacturing process to manufacture FHE systems with a two-layer interconnect structure utilizing screen printing of silver conductive ink, filled microvias to connect ink traces at the different layers, and use of the traditional reflow process to attach the semiconductor chips to the printed substrates.
Words of Advice: Planning a New Design
In a recent survey, we asked the following question: What do you think is the most important thing a designer should remember when planning a new PCB design? Here are a few of the answers, edited slightly for clarity.
The Impact of Inductance on Impedance of Decoupling Capacitors
This article discusses the impact of interconnection inductance on the impedance of the decoupling capacitor, which influences the power integrity of the PCB. The investigation is performed with 3DEM simulation by varying the trace length and height of stitching vias that connect the decoupling capacitor across the power rail and ground.
IPC High-reliability Forum and Microvia Summit Review, Part II
The Microvia Summit on May 16 was a special feature of the 2019 event in Baltimore, since microvia challenges and reliability issues have become of great concern to the PCB manufacturing industry. It provided updates on the work of members of the IPC V-TSL-MVIA Weak Interface Microvia Failures Technology Solutions Subcommittee and opportunities to learn about latest developments in methods to reveal and explain the presence of latent defects, identify causes and cures, and be able to consistently and confidently supply reliable products.
Denny Fritz: The Difference Between Quality and Reliability
I recently spoke with industry veteran (and I-Connect007 columnist) Denny Fritz about the relationship between quality and reliability—two terms that are unequal but often used interchangeably. We also discuss the current state of lead-free solders in the U.S. military and defense market as well as the microvia reliability issues Denny focused on at IPC’s High-Reliability Forum and Microvia Summit in Baltimore, Maryland.
Words of Advice: What Feature Would You Like to See in Your CAD Tool?
In a recent survey, we asked the following question: What feature would you like to see in your CAD tool? Here are a few of the answers, edited slightly for clarity.
Albert Gaines: Design All Comes Down to Documentation
During SMTA Atlanta, I spoke with Albert Gaines of HiGain Design. We discussed Albert’s belief that everything starts with design and that too many engineers and designers focus solely on the final board at the expense of the documentation, which is a designer’s most important product. Do you consider your documentation to be a critical product?
Words of Advice: Where Do You Get Involved in the Design Process?
In a recent survey, we asked the following question: Where in the process do you typically get involved with a design project? Here are a few of the answers, edited slightly for clarity.
Design for the Unknown
Our industry loves DFx, also known as the “Design Fors.” As PCB designers, we not only design for manufacturability (DFM) but we design for assembly, reliability, cost, test, and many more factors which we like to lump together as DFx. But now, I think it’s time we embrace a new DFx: Design for the Unknown, or DFU.
Words of Advice: Planning a New Design
In a recent survey, we asked the following question: What do you think is the most important thing a designer should remember when planning a new PCB design? Here are a few of the answers, edited slightly for clarity.
Freedom CAD Book Excerpt: The Printed Circuit Designer’s Guide to… Executing Complex PCBs
The following is an excerpt from Chapter 5 of "The Printed Circuit Designer’s Guide to… Executing Complex PCBs," written by Scott Miller of Freedom CAD Services.
Mentor’s EDA Perspective on Managing Design Rules
I recently spoke with Dave Wiens, product manager, and Mike Santarini, EDA content director of corporate marketing, both of Mentor, a Siemens business, about design rules and constraints, and what their customers want regarding design rules. They explained how EDA companies like Mentor help designers constrain for performance while avoiding over-constraining and increasing the cost of the board and also being manufacturing-aware.
Words of Advice: When do You Get Involved in the PCB Design Cycle?
In a recent survey, we asked the following question: Where in the process do you typically get involved with a design project? Here are a few of the answers, edited slightly for clarity.
XPLM: Using PLM to Integrate ECAD and MCAD Data
During AltiumLive in Munich, I met with Robert Huxel, XPLM’s director of business development for EMEA and APAC. XPLM offers data integration for some of the big EDA tool companies, and their tools can integrate ECAD and MCAD data into PLM systems. I asked Robert to tell us about the requirements of today’s PLM tools, the changing world of ECAD and MCAD integration, and whether these two types of data are ever going to converge.
PCB Designer Survey: Everything Starts With Design
Recently, a variety of technologists who fabricate and assembly PCBs have made the following statement: “Everything starts with design.” We want to get your thoughts on this. What are some of the steps you take early in the design process that can affect your downstream partners? Let us know!
An Experienced Millennial on Hiring the Next Generation
During DesignCon, I met with Geoffrey Hazelett, VP of sales for Polar Instruments. Even though he has been in EDA for a few years, Geoffrey is still in his thirties, which makes him a youthful cherub in this industry. I asked Geoffrey what he thinks about the new PCB designers and EEs entering this field, and what more can be done to expose young people to the world of PCBs.
PCB Design Is All in the Family With Nicole Pacino
I shared a flight with Nicole Pacino on the way to Altium Live in Munich, and she mentioned that her father was speaking at the show. I went down the list of speakers, and it turned out that her dad is Mike Creeden of San Diego PCB. In Germany, I asked Nicole to tell us about how she got into this industry, and what we could do to draw more young people into this career.
3DEM Modeling: Influence of Metal Plating on PCB Channel Loss and Impedance
This article briefly introduces different types of metal plating commonly used in PCB fabrication. Subsequently, the influence of metal plating on PCB channel loss (i.e., insertion loss or S21) and impedance (i.e., time domain reflectometry or TDR) is studied with 3DEM modeling,
Mentor’s Cristian Filip Discusses His Award-winning DesignCon Paper
During DesignCon, I met with Cristian Filip, a senior product architect with Mentor, a Siemens business. Cristian had just received word that his paper had won a DesignCon Best Paper award—his second such award in three years. I asked Cristian to discuss his paper and how this technology can help improve manufacturing yields at high volumes.
Words of Advice: Component Shortages in 2019
In a recent survey, we asked the following question: What components do you expect to be in short supply in 2019? Here are just a few of the answers, edited slightly for clarity.
Words of Advice: What Concerns you About the Future?
In a recent survey, we asked the following question: What concerns do you have about the future? Here are just a few of the answers, edited slightly for clarity.
Joe Clark Discusses DownStream’s Updated Tool Lineup and IPC-2581
DownStream Technologies recently revamped their entire product line, from CAM350 through BluePrint-PCB. DownStream co-founder Joseph Clark and Guest Editor Kelly Dack discuss some of these updates, including a new GUI and capabilities such as 3D analysis, as well as news about IPC-2581.
Altium Prepares for Munich Show as Growth Continues
It’s been just two months since the AltiumLive event drew several hundred designers to San Diego, California, and Altium is already gearing up for the next show in Munich, Germany (January 15–17, 2019). I recently spoke with Chris Donato, VP of global sales for Altium, about the upcoming AltiumLive show as well as the company’s growth over the past few years.
Dock Brown on Succeeding at Failure Analysis
Dock Brown of DfR Solutions gave a keynote speech at SMTAI, “Requirements for Both Cleaning and Coating to Building Medical Hardware.” Barry Matties and Happy Holden sat down with Dock to discuss the current trends he sees in failure analysis, the concept of “rules versus tools,” and how predictive engineering software used early in the design cycle can help predict failures in components and microvias and drive cost down.
Life Beyond 10 Gbps: Localize or Fail!
Ideally, all interconnects should look like uniform transmission lines (or wave-guiding structures) with the specified characteristic impedance. In reality, an interconnect link is typically composed of transmission lines of different types (microstrip, strip, coplanar, coaxial, etc.) and transitions between them such as vias, connectors, breakouts and so on. Transmission lines may be coupled to each other that cause crosstalk. The transitions may reflect and radiate energy due to discontinuities in signal and reference conductors. The crosstalk, reflections and radiation cause unwanted and sometime unpredictable signal degradation.
Darwin E. George: Seeking PCB Design Job at Retirement Age
Some of us dream of living a life of leisure at 70. But not Darwin E. George. This septuagenarian wants to find a job designing PCBs. We met up with Darwin at AltiumLive, where he was networking and trying to get his foot in the door with one of the companies that are hiring now. Darwin told us about his career in PCB design, his experience learning a new EDA tool, and why he would rather design high-speed PCBs instead of playing shuffleboard for the rest of his life.
Mentor and TEXMAC Takaya Team up to Optimize DFT
At SMTAI, Mark Laing of Mentor, a Siemens Business, and Dave Levine of TEXMAC Takaya, sat down with Editor Nolan Johnson to discuss design for test, and their collaboration to improve DFT in PCB design tools and test machinery. They also traced the evolution of DFT over the past decade as it has begun to "left-shift" farther into the realm of the designer, all the way up to schematic entry.
John R. Watson Returns to AltiumLive in San Diego
When AltiumLive launched last year, John R. Watson, CID, of Legrand signed up as an instructor. He’ll be presenting at this week’s AltiumLive in San Diego as well. I spoke with John recently about his AltiumLive class, and the state of PCB design. He also discussed a few tricks for designing boards with components that are currently on an 80-week lead time, and why this problem is likely to get worse before it gets better.
BGA Fanout Routing Overview
PCB developers are deluged with new challenges caused by increasing density and smaller components. Ball grid arrays (BGAs) create particular challenges during layout, with hundreds of connections in just a few square centimeters. Fortunately, designers now have options for addressing these issues.
Dave Wiens Discusses Multi-board Design Techniques
For our multi-board design issue, I interviewed Dave Wiens, product marketing manager for Mentor, a Siemens business. We discussed how the multi-board design technique differs from laying out single boards, along with the planning, simulation and analysis processes required to design multi-board systems.
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.
Faster Board Speeds Demand Constraint-Driven Design
Using powerful constraint techniques can be a double-edged sword. While the design process is made much safer by including constraints, it is all too easy to over-constrain the design and make it impossible to complete routing and placement. Even paper design guidelines can make products uneconomic to produce unless a great deal of engineering knowledge is applied during the design.
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.
Field Trip: CID Class Sees How Flex is Made at Streamline Circuits
While I was teaching my CID class for EPTAC in Santa Clara, I learned that we were only a block away from Streamline Circuits. Streamline does a lot of military and aerospace work, as well as communications and industrial electronics. The company manufactures quite a bit of multilayer flex and rigid-flex circuits, in addition to rigid boards. This would make a great field trip for my CID class!
Experts Discussion: What Does 5G Mean to Materials and EDA Tools?
Whether we’re ready for it or not, 5G technology is coming. We decided to speak with John Hendricks, market segment manager for wireless infrastructure at Rogers Corporation, and Ben Jordan, director of product and persona marketing for Altium, about the challenges related to 5G and what this means for PCB designers and fabricators.
EDADOC: A Driving Force in China's Automotive Electronics Design
EDADOC is one of the biggest providers of PCB design and manufacturing services in China, with a long history in automotive electronics design and manufacturing. China Editor Edy Yu recently conducted an email interview with EDADOC R&D Technical Research Manager William Zhou and Brand Planning Specialist Wen Ling, who collaborated on their answers. We discussed the challenges related to designing and fabricating automotive PCBs, the opportunities in this segment, and the trends they see in the market for autonomous and electric vehicles.
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.
South African Electronics Industry Going Strong
EDA Technologies is a South African company that offers PCB design engineering services, mainly for the domestic electronics market, which makes up a surprising 12.5% of South Africa’s GDP. Barry Matties recently spoke to founder Nechan Naicker about the benefits of outsourcing to South Africa, the market segments they service there, and any advice he had to offer from his 20+ years in the industry.
RTW IPC APEX EXPO: Ucamco's New Tools for Designers, Fabricators
European Editor Pete Starkey and Ucamco partner Luc Maesen discuss Ucamco's newest solutions for PCB designers and fabricators, YELO (Yield Enhancing Layout Optimizer) and Communic8tor. Both of these products were recently launched for users in the North American market.
RTW IPC APEX EXPO: Valor Tool Benefits from Merging Mentor, Siemens Technologies
Oren Manor, director of business development, discusses the convergence of the electrical and mechanical discplines made possible through Mentor's merger with Siemens. Manor also explains how Mentor's Valor platform now utilizes Siemens' "digital twin" concept.
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.
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.
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.
Heat Transfer and Thermal Conductivity: The Facts
In my first two columns, I presented a broad introduction to the subject of thermal management of electronic circuits. This month I’m taking a closer look at thermal interface materials—how they can be applied to achieve efficient heat transfer, and the significance of bulk thermal conductivity in relation to heat transfer and thermal resistance.
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.
RTW SMTAI: Judy Warner Discusses AltiumLive: 2017 and Her New Role
At SMTA International in Rosemont, Illinois, Judy Warner of Altium discusses her new role as director of community engagement. She also details AltiumLive: 2017, which takes place October 3-4 at the Hilton San Diego Resort and Spa. AltiumLive features Happy Holden and Charles Pfeil, as well as a robot design challenge and battle.
Resins: Cutting Through the Technical Jargon
This month, I’m going to cut through some of the more heavy-going tech-speak, taking a few of my customers’ more frequently asked questions about resins to try to help you refine your selection process. There’s a lot of ground to cover, but for the purposes of this column, let’s concentrate on the PCB’s operating environment, caring for the components that are to be encapsulated, and the special needs of applications like LED lighting and RF systems.
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.
Steve Robinson Discusses APCT’s Tenfold Expansion
Steve Robinson, CEO of APCT, a PCB fabricator in Silicon Valley, has led the company to impressive growth since he acquired it nearly 10 years ago. I ran into Steve at DesignCon 2017, and we sat down to discuss the company’s remarkable transformation and his focus on working with PCB designers and engineers to create advanced, high-speed PCBs.
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.
The Evolution of PCB Design and Designers
According to Rainer Asfalg of Altium, VP Sales EMEA, EDA companies owe it to their customers to provide much more than just a standard design tool. Barry Matties met with Rainer at the recent electronica show to discuss the continued evolution of the design process towards automation, and what this might mean for the education and overall requirements of PCB designers going forward.
Altium’s Sales Plan: Deal Directly with Designers
Altium has been shaking up the EDA world for quite some time. The Australian company once slashed the cost of Altium Designer by 75% to grow market share, and who could forget their famous (or infamous) “Bunny” ad campaign? In this email interview with Lawrence Romine, Altium’s global head of field marketing, he shares his views on sales and marketing in the EDA world, as well as Altium’s philosophy on selling EDA tools.
Much Ado About Sales and Marketing
We recently surveyed our readers to get a better idea of what company leaders thought about sales and marketing. We sent this survey to several sales leaders; the results were informative, at times surprising, and even a bit disappointing, especially when participants reported that they had no sales and marketing plan at all. Does your company fall into that category?
Altium ActiveRoute Debuts at PCB West: Routes Under One Second Per Connection
While at PCB West, Judy Warner had the chance to sit down with Charles Pfeil of Altium and learn more about their exciting new tool, ActiveRoute, that was introduced and demonstrated during PCB West 2016. She also learned a bit of background about Pfeil, who is a living history lesson in PCB design.
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.
The Fundamentals of Improving PCB Thermal Design
Continental's automobile engineers have years of experience building critical parts and systems for automobiles. Making sure that automotive electronics are reliable, safe, and properly designed begins at the component level. Heat must be addressed early in the design process for these goals to be achieved. The most important thermal resistance for heat, outside the IC package, is the PCB.
Prototron Adding a Variety of Services and Certifications
Editor Judy Warner and Prototron Sales Manager Russ Adams discuss Prototron's new capabilities and certifications. The company recently added via fill and limited flex services, and is ready to pull the trigger on AS9100 once the new rev is finalized.
John Cardone on Designing Flex for Spacecraft
If you watched footage of the Mars rover driving all over the red planet, you’re familiar with some of John Cardone’s handiwork. He’s been designing rigid, flex, and rigid-flex circuitry for spacecraft since he joined JPL in the early ‘80s, and he’s worked on some of the more ground-breaking flex circuits along the way. Now John runs his own design service bureau, JMC Design Services, and he continues to design circuitry for things that blast off. I caught up with John recently and asked him to give us the straight scoop on designing boards for spacecraft.
The Many Voices Over the Past Year
In line with our "Voices of the Industry" theme this month, we're publishing this handy index of all of the interviews we've conducted over the past year with the movers and shakers, managers, entrepreneurs, and and rank-and-file designers and design engineers. In case you missed them, here's another bite of the apple, alphabetized by interviewee's last name. Enjoy!
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.
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.
EDA Tools: Automation vs. Control
Stephen V. Chavez, CID+, is currently the lead PCB designer for the Electronic Systems Center division of UTC Aerospace Systems (UTAS). He's also a frequent speaker at the IPC APEX EXPO Design Forum. I caught up with Stephen and asked for his thoughts on the EDA tools of today, and whether he’d prefer to have more control vs. more automation.
The Roles of the Designer and the Design Engineer
Steve Hageman has been designing electronics since elementary school. An engineer by trade, he has decades of experience performing PCB design and layout. I asked Steve to give us his opinion about the divide between some PCB designers and their engineers, and what can be done to solve this problem.
The Partnership: Design Engineers and PCB Designers
Randy Faucette is founder, president and director of engineering at Better Boards Inc. in Cary, North Carolina. I asked Randy to talk about some of the occasional tension between PCB designers and design engineers, and what he thinks can be done to help open the lines of communication.
Designers Notebook: Flexible and Rigid-Flex Circuit Design Principles, Part 5
The outline profile of the flexible circuit is seldom uniform. One of the primary advantages of the flexible design is that the outline can be sculpted to fit into very oblique shapes. This month, Vern Solberg focuses on outline planning, physical reinforcement, and accommodating bends and folds in flexible and rigid-flex circuits.
IPC APEX EXPO: Gary Carter on First Board Manufactured With IPC-2581B
Gary Carter, senior manager of CAD engineering for Fujitsu Network Communications, discusses the first board fabricated and assembled using IPC-2581B. This 20-layer board features 21,000 component pins and 15,000 holes, with controlled impedance on all layers. He also gave a presentation on IPC-2581B during the Design Forum.
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.
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.
Designers Notebook: Flexible and Rigid-Flex Circuit Design Principles, Part 3
This installment of "Designers Notebook" will focus on methods for specifying base materials, and also address copper foil variations and fabrication documentation. It is important to research the various products in order to choose the one that best meets the design requirements.
The Shaughnessy Report: Doing My Part for Medical Electronics
One interesting aspect of having hernia surgery recently was the number of PCBs in the operating room. I’ve never seen so many electronic devices together in my life. I saw one Agilent monitor, and a bunch of others with names I couldn’t make out. It reminded me of the IT room in most companies. I guess they had to be set up to handle routine surgery like mine, and the not-so-routine operations as well. Medical electronics is doing fine, no doubt.
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.
Justifying the Need to Outsource Design Work
Mehul Dave and H.D. Shreenivasa of Entelechy Global discuss the many benefits of outsourcing and why it should not be thought of as a four-letter word. They also talk about the huge gap between design and manufacturing, and how their company can help customers address that issue.
Beyond Design: Plane Crazy, Part 2
In my recent four-part series on stackup planning, I described the best configurations for various stackup requirements. But I did not have the opportunity to delve into the use of planar capacitance to reduce AC impedance at frequencies above 1GHz, which is the region wherein bypass and decoupling capacitors dramatically lose their impact. In this column, I will flesh out this topic, and consider the effects of plane resonance on the power distribution network (PDN).
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.
IPC Designers Council Viewpoint: Mike Creeden
When covering the IPC Designers Council, one quickly learns that it’s the volunteers who make the train run on time. San Diego PCB CEO Mike Creeden, CID+, is one such volunteer, and as a member of the Designers Council’s Executive Board, he was a must-have for this issue. I tracked him down and asked him to give us a rundown of his involvement with the DC, and to explain why designers might want to get involved with their local DC chapters.
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.
The Shaughnessy Report: Are You Drowning in Data?
Data management was so much simpler during the days of Mylar and Bishop Graphics tape. Data was handwritten. All you had to do was keep track of your paperwork and you were golden. Now, you’re all much more productive, but you have data coming out of your ears; slowly but surely, incrementally, data has become much more complicated. How do designers and engineers wind up managing all of this data? With kluged-together processes and software tools, and the occasional handwritten notes.
DownStream Takes on Data Documentation Management
Most designers will tell you that, as much as they enjoy laying out boards, they dislike the final data documentation step, which often involves various formats, including handwritten notes. Enter DownStream Technologies, a company founded 14 years ago to address the challenges related to post-processing the design. Senior Product Marketing Manager Mark Gallant recently discussed the company’s efforts to take the pain out of data documentation, even as data becomes more complex.
Why Autorouters Don’t Work: The Mindset!
Ask any group of PCB designers what they think of autorouters and the majority will say that they do not use them because they do not work. I have been battling this mindset for over 20 years now and it still persists today, even with the dramatic advances in routing technology. This way of thinking generally comes from those designers who use the entry-level tools. But even the most primitive autorouter may have some useful features. It’s all about changing that mindset of the designer and having a crack at it.
EMA: Helping Technologists Manage Disparate Data
Today’s EDA tools are better than ever, but managing design data, from schematics through Gerbers, can be an unwieldly task. I recently interviewed Manny Marcano, president and CEO of EMA Design Automation. He discusses EMA’s approach to managing a variety of types of complex data, the need for seamless data processes, and the future of compliance-aware design.
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.
The Gerber Guide, Chapter 3: The PCB Profile
The profile defines a simple region in the 2D plane. The proper way to do this is to specify a closed contour: The inside of the contour is the PCB, and the outside is not. It is that simple. Note that such a simple region is solid, without holes. By definition then, a profile cannot have holes intentionally placed within it. These are superfluous and represent an unnecessary and complicated duplication given that drill holes are well defined in the drill/rout file. One can view cut-outs in a PCB as still part of the PCB, just as much as the drill holes are.
Beyond Design: Stackup Planning, Part 4
In this final part of the Stackup Planning series, I will look at 10-plus layer counts. The methodology I have set out in previous columns can be used to construct higher layer-count boards. In general, these boards contain more planes and therefore the issues associated with split power planes can usually be avoided. Also, 10-plus layers require very thin dielectrics in order to reduce the total board thickness. This naturally provides tight coupling between adjacent signal and plane layers reducing crosstalk and electromagnetic emissions.
Polar Instruments Fine-Tunes Layer Stackup Management
Polar Instruments CEO Martyn Gaudion and Technical Editor Pete Starkey discuss Polar’s efforts to simplify specification issues related to the supply chain. Designing PCBs with mixed materials makes layer stackup management more difficult than ever, but Gaudion explains how Polar works closely with materials providers and CAD tool vendors in order to provide users with constantly updated information.
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.
The Readers Speak: Tips on Accelerating your Design Cycle
This month, in addition to publishing feature articles by well-known experts in the field, we decided to collect feedback from the readers—PCB designers and engineers working in the trenches each day. We asked our readers to provide their favorite tips, tricks, and techniques for speeding up the PCB design cycle. Here are 10 tips for cutting your design time, courtesy of designers just like you.
The Material Witness: Nonwoven Aramid Reinforcement is Back
In the 1st century AD, there was significant debate among Jewish theologians as to whether resurrection was possible. PCB designers in the early 21st century have had a similar concern about future availability of 85NT nonwoven aramid laminate and prepreg. The stakes may be somewhat less critical, but the future of a wide variety of programs designed around the properties of Thermount have been hanging in the balance.
Insulectro Hosts Silicon Valley Designers Council Meeting
On October 15, about 25 people gathered for the IPC Designers Council Silicon Valley Chapter meeting at Insulectro's Mountain View facility. Carl Schattke, senior PCB design engineer at Tesla, was the main speaker. His presentation covered a variety of facets of PCB design, from shadowing to the location of component based on weight and surface finishes.
The Shaughnessy Report: Squeezing Seconds Out of the Design Cycle
When you’re designing a board, time is always your enemy. That’s what we learned when we surveyed our readers recently. PCB designers said that time pressure was one of their least favorite parts of the job, and in some cases, they were ready to retire just to avoid design cycle challenges. I imagine that many of you near retirement, and that’s quite a few of you, feel the same way.
Top Gear: PADS Professional Road Test
In this column, Barry Olney test drives the newest version of the Mentor Graphics PADS Professional EDA tool. "Based on Xpedition technology, PADS Professional is a major improvement over the previous PADS suite of tools. utilizes xDX Designer as the front-end design entry tool. The latest routing technology is fast, smooth to drive, and hugs the corners well, with all the horsepower you need for the most demanding design."
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.
The Gerber Guide, Chapter 2
Never mirror or flip layers! All layers must be viewed from the top of the PCB, which means that the text must be readable on the top layer and mirrored on the bottom layer. Alas, sometimes, in a mistaken attempt to be helpful, designers flip layers because they must anyway be mirrored on the photoplotter. This could be helpful in a world where the designer's files are used directly in fabrication, but these data layers are actually input for the CAM system.
Physics of Failure Durability Simulations for Automotive Electronics
Automotive electronics systems are becoming increasing complex and essential for the proper, safe operation of cars and trucks. Vehicle controls for basic operation and safety functions are increasingly being implemented by electronic modules. The ability of these electronic systems to function reliably is becoming a greater aspect of vehicle safety as was dramatically demonstrated by the 2009–2011 recall of over 9 million Toyota vehicles for unintended acceleration issues.
Mentor Graphics Helps Bridge Gap Between PCB and RF
Recently, Publisher Barry Matties met with Per Viklund, the director of IC packaging and RF product lines at Mentor Graphics, and Alex Caravajal, business development manager with Mentor. They discussed the challenges facing PCB designers working with RF and microwave technology, and Mentor’s efforts to help reduce the RF design cycle time.
Failure May Not Be an Option, but Sometimes It's a Reality
I’ve had mechanical engineers question why we are bothering with circuit boards instead of designing the circuitry into the plastic housing of the device. I’ve had manufacturing engineers demand that I shelve the electrical considerations in order to meet manufacturing requirements, and electrical engineers who could care less if the product could actually be built. I’ve had engineers hover over my shoulder watching each and every stroke of the mouse that I make, and others who are never available for important questions which ultimately brought the whole project to a grinding halt.
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.
Karel Tavernier: The Gerber Guide
It is possible to fabricate PCBs from the fabrication data sets currently being used—it's being done innumerable times every day. But is it being done in an efficient, reliable, automated and standardized manner? At this moment in time, the honest answer is no, because there is plenty of room for improvement in the way in which PCB fabrication data is currently transferred from design to fabrication.
Gary Ferrari Shares His Thoughts on PCB Design and More
Recently, I spoke with Gary Ferrari, director of technical support at Firan Technology Group, about numerous topics related to PCB design. Our conversation ranged from CID training to the need for reaching high school students as a way of introducing more young people to career opportunities in our industry. We also covered strategies for helping customers design and build better product, and keeping designers provided with the most critical part of their supply chain—information.
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.
The Past, Present, and Future of IPC-A-610
To understand the ultimate power of IPC-A-610, you need to first understand what is at the core of this standard. IPC-A-610 is a collection of visual quality acceptability requirements for electronic assemblies. It is utilized as a post-assembly acceptance standard to ensure that electronic assemblies meet acceptance requirements.
Hunter Technology’s Two Newest CID Recipients Discuss Certification
I-Connect007 Guest Editor Kelly Dack spent time at Hunter Technology’s Silicon Valley plant, where he had the opportunity to sit down with two recent CID certification recipients, Jeff Davidson and Zev Gross, who recently completed Dack’s CID training program. The two also discuss the benefits of achieving certification and their plans to take the advanced course.
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