Electronics Forum: phosphor nickel embrittlement (Page 1 of 7)

Re: Storage life of Gold Finish Boards

Electronics Forum | Fri Jan 15 09:36:20 EST 1999 | Earl Moon

| Folk's, | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do you have be

Re: Storage life of Gold Finish Boards

Electronics Forum | Fri Jan 15 11:28:50 EST 1999 | Bob Willis

| | Folk's, | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do you h

Re: Storage life of Gold Finish Boards

Electronics Forum | Fri Jan 15 14:45:48 EST 1999 | Earl Moon

| | | Folk's, | | | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do

Re: Storage life of Gold Finish Boards

Electronics Forum | Mon Jan 18 10:01:16 EST 1999 | John W

| | | | Folk's, | | | | | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how l

Re: Storage life of Gold Finish Boards

Electronics Forum | Tue Jan 19 11:12:41 EST 1999 | Dave F

| | | | | Folk's, | | | | | | | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly

Re: Time to use alternative finishing ???

Electronics Forum | Mon Sep 13 06:23:06 EDT 1999 | Earl Moon

| | We have a product, with various PWBs, with over 600 parts each one (We are a low Volume/high mix company with an average component placement per PCB between 250 to 300 parts). This PWBs have 7 to 10, 20 mils pitch parts. We are having problems wi

Re: Gold boards OK with SMT?

Electronics Forum | Thu Aug 06 17:25:55 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 ele

Does this forum covers BGA's

Electronics Forum | Tue Feb 22 09:01:50 EST 2005 | davef

It could be that you're starting with hyper corroded nickel, before you even begin work. With electroless nickel, everybody looks at the nickel, but the cause turns out to be the immersion gold is too aggressive [during fabrication]. Immersion gold

Re: Gold boards OK with SMT? What About Gold Thickness?

Electronics Forum | Tue Aug 11 07:51:57 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, n

Re: Poor solderability

Electronics Forum | Mon Feb 14 12:19:32 EST 2000 | Dave F

Dean: I associate black plague as an immersion gold process problem (although I could easily be wrong): Everybody looks at the nickel, but the cause turns out to be the immersion gold is too aggressive. The immersion gold works by corroding the nic

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