Electronics Forum | Thu Jul 24 13:12:41 EDT 2008 | dphilbrick
I seriously doubt it. It is extremely thin and the gold's only real purpose in life is protect the nickel underneath from oxidizing. Once you wear that very thin gold off you will have exposed, oxidized, nickel and loss of conductivity.
Electronics Forum | Fri Aug 01 08:10:29 EDT 2008 | scotceltic
Has anyone come across a standard or study (JEDEC, IPC) where it has the recommended shelf life outside of a dry box for immersion silver coated PCB's to prevent oxidation from affecting the soldering process (Both reflow and Wave). I know it will
Electronics Forum | Thu Aug 28 13:15:59 EDT 2008 | omid_juve
how can i be sure that the device isn`t affected by moisture ? i mean that if the pins are oxidized due to the moisture how can i remove this oxidization ?
Electronics Forum | Fri Oct 10 14:49:21 EDT 2008 | omid_juve
what is the best solder paste type(RA,RMA,R,WS,...) for removing oxidation from the pins of our parts.
Electronics Forum | Fri Jan 23 13:26:34 EST 2009 | bwet
Dear SMTers: We are looking for a supplier of 1 oz copper sheets, tin coated on one side and black oxide coated on the other? Ideas? BWET
Electronics Forum | Mon Aug 30 14:46:56 EDT 2010 | davef
Sure, you should be able to measure the copper oxide thickness on the inner layers of a PCB when doing sections.
Electronics Forum | Fri Sep 03 03:17:59 EDT 2010 | nibirta
Dave can you be more specific on this? I will be interested to see such a picture from cross-section with an oxide layer. Is this possible? Thanks in advance. Nicoleta.
Electronics Forum | Fri Sep 03 04:00:10 EDT 2010 | sachu_70
James, Are you referring to oxidation caused on outer layers of PCB on account of poor OSP finish over Cu?
Electronics Forum | Wed Sep 08 11:36:18 EDT 2010 | blnorman
SERA testing (sequential electrochemical reduction analysis)can measure surface oxidation, not sure on inner layers.
Electronics Forum | Mon Jul 01 13:57:58 EDT 2013 | wpierowski
Recently on one product, I found a white residue on the solder joints only that is more of a gray in color. Our lab told us it was a tin oxide with an unknown organic. This is with a lead free OA paste and it only shows after wash. Has anyone seen
.gif)
