January 3, 2007

The latest iNEMI update on tin-whiskers dated 12/1/2006 includes a Table 3 which identifies that if bus bars must be matte tin plated, that there should be tin mitigation methods employed. However, iNEMI recommends that no matte tin be used. 

My question is, if we must use matte tin plating, can we use the same method used for mitigating tin whiskers as for components.  We plan on invoking ASTM tin plating spec ASTM B545 Appendix X tin-whisker mitigation which allows up to 12% Pb to be alloyed with the tin.  We also use JP002 as a guideline document to supplement the ASTM specification to provide additional details pertaining to mitigation processes.

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------