Electronics Forum | Fri May 05 05:51:13 EDT 2017 | muzzy
Hello Becky, Thank You very much for information, I will keep that in mind. Best Regards, M.
Electronics Forum | Sun Jun 12 09:29:41 EDT 2016 | davef
I'd guess that the interconnect pads on the BGA have poor solderability. Confirm this with testing at an independent lab. Work with your supplier to resolve the issue.
Electronics Forum | Sat Jun 11 06:33:27 EDT 2016 | fady
i'm new to pcb design and i'm wondering that starting from which frequency range we need to apply the high speed PCB design rules and techniques ?
Electronics Forum | Thu Aug 04 10:38:23 EDT 2016 | richardlawson1489
Here is a video for high speed pcb design rule and techniques. https://www.youtube.com/watch?v=BlHLmQ2HO1w This may help you.
Electronics Forum | Thu Jun 30 03:14:34 EDT 2016 | andrzej
Looks like "black pad" issue. More about this here: http://www.ipc.org/feature-article.aspx?aid=Black-pad Definitly PCB supplier need to improve the process.
Electronics Forum | Mon Aug 22 22:40:52 EDT 2016 | twhoo
analysis report is as attached. Pls let me know what you think of the root cause of this issue? Can i conclude this is a black pad at thru hole ring with a root cause of contaminated gold
Electronics Forum | Mon Aug 22 23:22:29 EDT 2016 | twhoo
i also notice the carbon and oxygen is high on the defect? Why is that?
Electronics Forum | Wed Jun 15 17:15:15 EDT 2016 | vchauhan
May I know what SMT Stencil Cleaner machine you used and what are the benefits? We are looking to buy Ultrasonic Stencil Cleaner machine. Your help is very much appreciated. Thank you.
Electronics Forum | Thu Jun 16 08:40:25 EDT 2016 | emeto
we use ultrasonic machine - it cleans good. You should be aware that there is quite a maintenance. THere are filters that have to be changed often and one's in a while I would drain the whole thing clean it and re-fill it.
Electronics Forum | Tue Jun 21 11:58:42 EDT 2016 | davef
Apologies for my denseness, and I haven't touched a Treiber in years, that said, isn't there "tensioners" on the machine at each end of the chain?
