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 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
Electronics Forum | Mon Jul 01 16:34:46 EDT 2013 | wpierowski
So that is common when the temp on the wash is high? The temp was adjusted for a flux that required a higher temp. How much of an issue is this tin oxide?
Electronics Forum | Thu Sep 24 08:05:59 EDT 2020 | majdi4
In my opinion, it is not possible to eliminate the oxidation in a component because oxidation it is not removable .. the only solution is to apply a mechanical operation (scraping) and then tinning the part..
