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We asked for you to send in your questions for Happy Holden, and you took us up on it! The questions you've posed run the gamut, covering technology, the worldwide fab market, and everything in between. Enjoy.
Q: What is the best way to resin-fill vias without voids?
A: I have not used this process a lot. In the past, partially filling surface vias with solder mask was sufficient. But now, with via-in-pad and stacked microvias, the filling process must be much more complete. Several machines on the market do this job very adequately and can be seen at the IPC APEX EXPO or SMTA International.
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Cadence’s Celsius: Don’t End up Holding the Hot Potato!
12/17/2020 |
Clive "Max" Maxfield, Maxfield High-Tech Consulting
I was just thinking about the party game Hot Potato. It reminded me of today’s increasingly competitive marketplace: Accurate thermal analysis must be performed, and any potential issues have to be identified and addressed as early as possible in the design cycle. Otherwise the system will run into problems, market windows will be missed, and someone will be left holding the hot potato. Trust me, you do not want to be that someone.
Oops, I Did It Again: Survey Details Most Common Design Errors
12/09/2020 |
Michelle Te, I-Connect007
We hate to admit it, but even the best of us make mistakes. Such is true with PCB designers and design engineers. We wondered: What are the most common mistakes that PCB designers make? Michelle Te has more.
Chapter 1 Excerpt from the Book ‘Thermal Management: A Fabricator's Perspective’
12/08/2020 |
Anaya Vardya, American Standard Circuits
Heat cannot be efficiently exchanged with stagnant air surrounding a hot device; however, it can be transferred away from the electronic component to the PCB using thermal vias. A thermal via is a good conductor of heat that runs between the top layer and bottom layer of the PCB, dissipating heat through simple conduction. In simple terms, thermal vias are plated holes located under, or electrically connected to, a surface-mounted heat source on a PCB that allows heat transfer through the hole.
