Electronics Forum | Fri May 05 12:48:18 EDT 2017 | emeto
You can cut space saver hard frames now everywhere at lower price, so I wouldn't recommend Vector Guard as it adds additional expense to get the frames.Maintenance of the frames adds more time and expenses as well.
Electronics Forum | Mon Nov 19 02:33:26 EST 2018 | davis
Hi Tushar, I used http://www.pcbnpi.com for over 2 years. They can provide PCB prototype, PCB assembly, and stencil service. Prices are affordable! Very professional and I can rely on them and they always come through. So I highly recommend to you!
Electronics Forum | Sat Mar 11 11:57:37 EST 2017 | parto
Dear experts, I'm looking for answers of my following questions: 1. What average consumption of soldering paste in SMD per square meter? 2. What average consumption of soldering bar in THD per square meter? Thanks in advance. Best regards, Reza
Electronics Forum | Tue Mar 14 14:13:14 EDT 2017 | cyber_wolf
I don't have an answer but I am curious. What data/testing shows that this voiding is detrimental? How did the auto industry arrive at
Electronics Forum | Tue Mar 14 14:15:03 EDT 2017 | dontfeedphils
I've always been happy with ~25% or less combined voiding on QFN ground pads (depending on the pad dimensions).
Electronics Forum | Wed Mar 15 06:58:43 EDT 2017 | cyber_wolf
Rob, That's what I suspected but I would be interested to see studies that show that the voids are in fact detrimental to thermal and electrical performance. If the automotive industry is requesting
Electronics Forum | Wed Mar 15 10:12:22 EDT 2017 | pzappella
Hello, A speaker at the conference is where I heard that the auto industry wants
Electronics Forum | Wed Mar 15 11:43:45 EDT 2017 | rob
Hi PZ, What, sort of like this one? http://creativeelectron.com/papers/EconomicsofLEDVoiding.pdf It even has the handy calculation for the reduction in thermal performance with voiding.
Electronics Forum | Wed Mar 15 11:51:35 EDT 2017 | cyber_wolf
Rob, I believe that is for die attach voiding not solder interface.
Electronics Forum | Wed Mar 15 12:05:24 EDT 2017 | emeto
Rob, Absolutely agree. Customer precedes standard. As you mentioned design engineers, I think that PCB design has the biggest influence on the voiding. Everything else we do is trying to fix bad PCB design.
