Electronics Forum | Mon Apr 30 17:43:53 EDT 2012 | scottv02
I have heard there is a process for mitigating the pure tin issues for 0402/0201 size parts by the use of SN63/PB37 solder print process. Is this true and does anyone have the data to back this up?
Electronics Forum | Mon Apr 30 18:34:35 EDT 2012 | hegemon
Pure Tin terminations can be mitigated for components with solder terminations less than .030" in height from the PCB, by using 6 mil stencil with Sn63/pb37 solder paste. That's the simple story for our customers that require it. Beyond that height w
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 | 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 | Tue Nov 06 10:40:49 EST 2007 | patrickbruneel
Darby, To my knowledge no case of RoHS (lead) violation has ever gone to court in the EU. The only documented RoHS (lead) violation (again that I�m aware of) has been settled out of court in the UK. Check here: http://www.eetimes.com/news/latest/s
Electronics Forum | Mon Apr 23 16:28:36 EDT 2007 | patrickbruneel
Chris, WEEE is great but RoHS doesn�t make since, here�s a couple of threads covering similar issues. http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=10341&#Message41486 http://www.smtnet.com//forums/index.cfm?fuse
Electronics Forum | Mon Dec 12 09:39:39 EST 2005 | Amol Kane
thank you devef....My point is this....If you solder all the areas that have Imm Sn on them, there wont be any whisker formation DUE TO THE IMM TIN COATING.....whiskers could still potentially form as a result of COMPONENT FINISHES and effective miti
Electronics Forum | Tue Oct 07 16:19:34 EDT 2008 | mikesewell
If at all possible buy parts with 3% min. lead on the terminations. If this is not an option, "mitigate" whatever the finish is. Typically this means tinning with 63/37 all the exposed lead, not just the solder joint area. Several companies can d
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
Electronics Forum | Thu Oct 31 17:34:37 EDT 2013 | hegemon
Keep in mind that you may need to assure that there are no pure tin finishes remaining on your parts. A general idea is that parts with pure tin (RoHs) finish will need to be plated with tin-lead solder to avoid the possibility of tin whiskers formi
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