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January 2007

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From:
- Bogert <[log in to unmask]>
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TechNet E-Mail Forum <[log in to unmask]>, - Bogert <[log in to unmask]>
Date:
Wed, 3 Jan 2007 05:06:45 -0500
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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.

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