Electronics Forum | Thu May 25 16:50:34 EDT 2006 | patrickbruneel
This sure doesn't look very healthy. The important things to know are A) You see this already right after reflow B) Is this showing up after the board has been in use for a while If you could answer these questions we could take it a step further. P
Electronics Forum | Fri May 26 11:44:36 EDT 2006 | H
Patrick: The image that you see was from a unit that was known to have gone through a 5-year environmental life test. However, we took another board, pre-refow, and scoped a similar device. It exhibited the same grainy component plating.
Electronics Forum | Mon Jul 07 16:30:50 EDT 2008 | realchunks
Until a billion dollar/euro machine falls from the sky from a single tin whisker and the rest of your fleet is grounded till they find out whats wrong with it. Not good for the goose but the wolves will be licking their leaded chops.
Electronics Forum | Wed Mar 04 08:25:49 EST 2009 | scottp
I don't think anyone can give you an answer until you've had some failure analysis done. Silver migration? Dendritic growth? Tin whiskers? Lots of possibilities, but you won't know without failure analysis.
Electronics Forum | Wed Apr 29 04:57:08 EDT 2009 | davepick
It depends on the application what will be considered the biggest issue to avoid (production or longterm reliability). Tin Whiskers are bit of an unknown quantity - but a more realistic problem could be dendritic growth / electromigration forming sho
Electronics Forum | Mon May 23 14:33:03 EDT 2011 | patrickbruneel
Latest news on this issue http://circuitsassembly.com/cms/news/11230-report-tin-whiskers-a-culprit-in-toyota-ua
Electronics Forum | Wed Nov 09 11:01:35 EST 2011 | blnorman
This application is military, which requires a minimum of 3% Pb on the terminations, or mulitple mitigations for tin whisker prevention.
Electronics Forum | Thu Sep 01 18:16:51 EDT 2016 | sarason
I found this rather interesting article on the science of Tin Whisker mitigation. http://iconnect007.uberflip.com/i/721932-smt-sept2016/36 sarason
Electronics Forum | Fri Jan 22 13:22:18 EST 2021 | davidhillman
Hi Graham - brite acid tin gets it "shiny" appearance due to codeposited organic material in the tin plating. The codeposited materials volatilize during the soldering process causing a ton of voids. Brite acid tin plating should not be used as a sol
Electronics Forum | Tue Sep 26 14:06:33 EDT 2006 | patrickbruneel
Jun 26, 2006 (See Comments Below) Editorial Managing the Naughty Child Mike Martel, Editor, Circuitnet I've been listening to voices on both sides of the RoHS issue and the more I hear, the more foreboding the tone becomes. Despite what some wr
