Electronics Forum | Tue Aug 20 14:55:33 EDT 2002 | markhoch
Has anybody expierianced solderability issues on electroless nickel boards that do not have gold immersion? We recently tried to process boards of this type, and I may as well have been trying to reflow on plastic. Any ideas?
Electronics Forum | Wed Aug 21 17:43:12 EDT 2002 | davef
Your flux supplier will have good suggestions.
Electronics Forum | Wed Aug 21 10:20:05 EDT 2002 | ksfacinelli
Dave, I am interested in a amine hydrochloride activated flux. Can you give suggestions on readily available fluxes that you have used that have strong deoxidization properties. I am looking at something that could be used in a pinch when the stan
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 | Thu Aug 12 14:50:12 EDT 2004 | russ
This is interesting, I was once told by a PCB supplier that "soft gold" was immersion and the "hard gold" was the plated. But I agree with Dave F., Chris, what's going on? Russ
Electronics Forum | Thu Aug 12 14:59:50 EDT 2004 | davef
Russ: Immersion gold [imm Au] is "soft" and it's "gold", but it is NOT "soft gold". Here's the question for your board house: If imm Au is "soft gold" and imm Au self-limits
Electronics Forum | Wed Aug 11 16:09:50 EDT 2004 | Kris
Hi How does one distinquish between hard gold and immersion gold ? thickness is 4 to 10 u" for Au and 300 to 400 u" for nickel what happens if the gold drops below 3" and the nickel is above 350" what are the typical failure modes associated with
Electronics Forum | Mon Aug 16 11:49:44 EDT 2004 | Kris
Hi Guys thanks for the replies. Dave, the spec is not for enig but for hard gold does your response alter if thats the case /
Electronics Forum | Mon Aug 16 18:09:33 EDT 2004 | Kris
ok I agree there has been a confusion with terminology When you say electrolytic soft gold with a minimum thickness of 5-8 of Au, is there a standard that you spec this from ?
