Electronics Forum | Wed Apr 26 10:27:37 EDT 2006 | slaine
weve hand soldered a few components that were tarnished with no problems, also the tarnish is electrically conductive if it helps.
Electronics Forum | Thu Apr 20 17:16:02 EDT 2006 | GS
Silver tarnish on lead could compromise the soldering, mainly in case of No Clean process. Make sure components are correctly packaged and stored. Check the vintage ( Manufacturing Data Code) and in order to avoid them to get old on shelf make sure F
Electronics Forum | Thu Jun 08 16:12:19 EDT 2017 | davef
Your plater's recommendation should work fine. Your simple copper plate will work, but you'll be stepping into fighting a copper tarnish battle. Silver over the copper is a better choice. I was thinking a silver thickness of a minimum of 3 microns
Electronics Forum | Fri Nov 26 05:22:44 EST 2010 | 89jeong
Hello Esoderberg. Did you get the analyis report from your vendor? If so, could you pls share it wiht us? Based on my experiance, this issue may be caused by the Au plating. You need to ask your vendor to check the Au thickness or Au plating proces
Electronics Forum | Thu Nov 11 14:29:18 EST 2010 | davef
When you say 'tarnished,' is that based on: * Appearance of the gold over-plate * That you can't get good contact during ATE processing ... OR ... * Something else?
Electronics Forum | Thu Apr 20 14:11:24 EDT 2006 | cw
hi All, recently i have received some parts with the lead turning black, and i then found out the leads are silver plating, is that going to be a problem? or it is simply a cosmetic issue? pls advise ASAP!! thansk a lot!!
Electronics Forum | Fri Aug 30 11:53:12 EDT 2002 | genny
Possibly this is tarnish? Silver finish requires a bit more care in handling or packaging - to avoid contact with sulphur which may cause tarnish. Some cardboard boxes gas out enough sulphur to cause a problem. Possibly look at your method of stora
Electronics Forum | Sun Sep 08 19:58:57 EDT 2002 | dasal
My specialty. Your right, Most corrugated contains S02 and the pallet is usually out gassing formic acid as well. Not a great environment for silver. Original press release follows: Reactive Polymers At AT&T Bell Labs, John P. Franey has developed
Electronics Forum | Fri Aug 30 16:25:21 EDT 2002 | davef
Imm silver holds-up to multiple thermal cycles very well. The things, we guess, are happening to make imm silver tough to solder after heating and sitting are: * Oxidation of the silver. * Reduction of the co-deposited organic anti-tarnish [used in
Electronics Forum | Thu Aug 29 17:51:43 EDT 2002 | nifhail
I have seen several Imm Ag pad on the assembled board which have a copper colorleaching through the silver plating This happened on the pad which was not deposited with paste during the assembly process. Don't know if it is a problem, but we only h
winsouce.jpg)
