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Electronics Forum | Wed Dec 28 16:03:53 EST 2005 | Chris
I have lots of experience with thermosonic gold ball bonding. You can read the literature and you will probably find some papers that say you can do it. I have never been able to do it. We gold ball bond all day long with little problems at all bu
Electronics Forum | Tue Aug 20 18:15:02 EDT 2002 | davef
Haaaaa!!!! Soldering to plastic!!!! An apt analogy!!! I like to compare it to soldering to dirt. Some thing. In fact, you are soldering on nickel, when soldering on many things. It�s just that the gold, er Pd, flash enables the wetting mechanism
Electronics Forum | Fri Feb 01 05:18:59 EST 2013 | eniac
If you have a hard-gold on your pads, it's not a problem. Hard gold can give to you 4 or 5 times for PCB soldering (BGA repair). Soft gold (or flash-gold) can destruct, after that will start a migration of nickel up through gold, your pads will be
Electronics Forum | Fri Dec 09 02:20:47 EST 2005 | Mike_Kennedy
Grant, I dont quite understand the implications my self yet on gold deposit using FLASH or ENIG. However the important part of the gold finish is that it is kept under 3% of the total solder joint, so normally its safe. With the FLASH process it is m
Electronics Forum | Thu Apr 20 13:42:23 EDT 2006 | fredericksr
I've seen embrittlement %s down to 3%, but a standard 5 mil solder pad would require well over 100uIn of plated gold to cause embrittlement. -Other Russ
