Electronics Forum | Thu Mar 02 07:40:46 EST 2000 | Roni Haviv
Allmost forgot: The "black pad" is simply the oxidized Nickel.
Electronics Forum | Mon Oct 20 17:03:05 EDT 2008 | davef
Josh From looking at your pix, we don't have a clue. [And we're going down to the nurse's station to get our eye checked because we don't black bubkus.] More than anything else the: * White on the pads could be solder * Copper-penny brown on the pad
Electronics Forum | Tue Jan 22 21:27:40 EST 2008 | davef
This is a picture of hypercorroded nickel [black pad]. We posted it as an attachment to the thread. It's a new feature that the folk at SMTnet.com added for our dancing and dining pleasure. Well, maybe not that, but we'll be able to communicate bette
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 Oct 21 21:34:56 EDT 2014 | davef
"Electroless Nickel Immersion Gold and Black Tar. What Is It and How Can It Be Prevented?" James Trainor, OM Group Electronic Chemicals, LLC SMTAI 2014 SUB2
Electronics Forum | Thu Mar 02 11:56:04 EST 2000 | Dave Pearcy
We are experiencing the same problem. We just spent $1,200 to figure out that the "black stuff" is a Nickel Oxide. I am going to look into the profile end of this problem. Any suggestions would be very helpful. Dave
Electronics Forum | Thu Mar 02 11:56:04 EST 2000 | Dave Pearcy
We are experiencing the same problem. We just spent $1,200 to figure out that the "black stuff" is a Nickel Oxide. I am going to look into the profile end of this problem. Any suggestions would be very helpful. Dave
Electronics Forum | Mon Apr 18 11:26:38 EDT 2005 | davef
Whenever we hear "gold" and "balls falling off", we think of black pad [hypercorrosion of nickel]. What does your EDX show?
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 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,..
