Electronics Forum | Tue Dec 05 09:16:06 EST 2006 | russ
I do not see this same scenario. Russ
Electronics Forum | Wed Dec 06 11:17:26 EST 2006 | dphilbrick
Not to my knowledge it is not.
Electronics Forum | Wed Dec 20 23:45:51 EST 2006 | Jack
Hi all, Any comment after read this article? Best wishes, Jack
Electronics Forum | Sat Dec 23 03:46:13 EST 2006 | Jack
Hi Davef, I think you are right..Rgds, Jack..
Electronics Forum | Thu Aug 29 09:55:37 EDT 2002 | davef
Sounds like hyper-corrosion of nickel, commonly referred to as 'black pad', in ENIG solderability protected boards. Search the fine SMTnet Archives to get started. Additionally, the July - September 2002 'Journal Of Surface Mount Technolgy' has an
Electronics Forum | Tue Jun 13 04:42:26 EDT 2006 | yqdeng@gsl.com.hk
What is "Black pad"in ENIG(Electroless nickel/immersion gold), how to solve if it happen in SMD BGA solder joint?
Electronics Forum | Tue Dec 05 21:19:14 EST 2006 | Jack
Hi Doug, I think you are right..Let me do some EDX on other location to see any nickel oxide...BTW, is this black pad reworkable?? If yes, how? Thanks in advance,..
Electronics Forum | Mon Jul 28 16:32:45 EDT 2003 | itempea
Mant, we are reliably replacing BGAs of all sizes and pitches on ENIG. The black pad is not something created through rework, but a defect that the PCB has from the very beginning. Ioan
Electronics Forum | Tue Jan 31 15:44:08 EST 2006 | John S.
We're looking at lead free surface finishes for some of our products. On one supplier's site, I found a note that tenting vias on ENIG boards can lead to the black pad phenomenon. How does this compare to your design guidelines and experience? Than
Electronics Forum | Fri May 29 02:05:34 EDT 2009 | nibirta
So true :) But I think we will have the final fight with the supplier when we will have troubles with the ENIG. We will assembly the product. From my experience, i never found a product with no black pad defects. It depends of the fabrication lots. T
