Electronics Forum | Thu Jul 29 21:11:13 EDT 2004 | davef
Could be lots of things. With limited information about temperatures, solder alloy, and cleaning; we'll swing for the fence that you got these solder connections very hot. So hot that Pb oxide is dominating the solder joint surface instead of the
Electronics Forum | Tue Dec 06 11:17:32 EST 2005 | jackxun
Seeks help:How can the silver sulfide PCB board avoid oxidizing?
Electronics Forum | Tue Dec 06 12:24:31 EST 2005 | jackxun
What rubber had or the liquid medicines spreads has been possible to guard against the oxidation?
Electronics Forum | Fri Feb 03 12:01:18 EST 2006 | Guillermo Hdz
Does anybody know how could I clean pcbs with immersion silver finising ? I have several boards that got oxidized for having been waiting too long to be processed after opening the package.
Electronics Forum | Fri Feb 03 13:15:44 EST 2006 | amol_kane
the flux in the solder paste should take care of the oxides. if possible print a board and run thru reflow to check for wetting issues......there are some published papers that say that the tarnish layer is too small to create any wetting issues or o
Electronics Forum | Thu Apr 19 02:49:07 EDT 2007 | ray
I observed some black dot or some oxidation occured on chip termination on pcba reflowed fews weeks ago as buffer stock. The solder joint and fillet wetting is good and shinning. It is an acceptable or defect condition per IPC standard/requirement? W
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.
