Electronics Forum | Fri Apr 29 14:16:16 EDT 2011 | ppcbs
Below is the long explanation. This defect is most commonly found with BGA components, but can arrise with all components. I see it happening more now with lead free boards that are being assembled with a no clean flux. Best short term remedy is t
Electronics Forum | Fri Aug 07 07:52:15 EDT 1998 | Earl Moon
| | Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, not e
Electronics Forum | Tue Aug 21 22:24:36 EDT 2001 | davef
Root around here http://www.kns.com/resources/library/lib-wirebonding.asp
Electronics Forum | Thu May 02 07:11:10 EDT 2002 | davef
They probably the same. Most likely someone is saying immersion gold [immersion Au] as a short hand for ENIG [ Electroless Nickel - Immersion Gold]. It is very uncommon to plate gold directly on copper, because gold and copper form a brittle interm
Electronics Forum | Mon Feb 21 09:05:46 EST 2005 | davef
We're try to stay away from using electroless nickel. Please describe the differences between the IMC.
Electronics Forum | Tue Dec 27 10:00:19 EST 2005 | sparrow
Hello, does anybody have experience in thermosonic gold wire bonding to electroless nickel/immersion gold?? regards, Sergey
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 | Mon Mar 29 14:32:01 EDT 2010 | isd_jwendell
The board in the test "used an electroless nickel/immersion gold (ENIG) finish." If you are not using ENIG plating on your PCBs then you may not suffer from the same issue.
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 | Sat Oct 24 13:03:20 EDT 2015 | mikekeens
With regards to PCB surface finish I would recommend Electroless Nickel Immersion Gold (ENIG) because of the long shelf life, tarnish resistance, RoHS-compliance, and easy soldering compared to other surface finishes. http://www.surfacemountprocess.
