Hi Jack - some immersion tin plating chemistries have been show to produce 
tin whiskers - but not all. The test data concerning this topic is 
considered by most companies to be " proprietary" so I recommend you 
discuss the tin whisker issue with the specific immersion tin plating 
chemistry supplier and request what data they have for their material. If 
they don't seem to have such data, that response would be a factor to 
consider. Good Luck.

Dave Hillman
Rockwell Collins
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Jack Olson <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
10/31/2011 09:12 AM
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Re: [TN] Whiskers from Immersion Tin Finish?






hmmm... 
that response implies that I should probably quit worrying about it, 
since there's not much I can do about that. 
(except maybe conformal coating)

"what, me worry?"
alfred e. newman


.
On Sat, 29 Oct 2011 10:10:08 -0400, Terry Munson <[log in to unmask]> 
wrote:

>We have found whiskers from the sac 405 and 305 solders. And Celestica 
published a paper on there experiments last year showing whiskers on 
solder joints as well. 
>
>Terry Munson 
>Foresite 
>765-457-8095
>
>
>On Oct 28, 2011, at 4:52 PM, Joyce Koo <[log in to unmask]> wrote:
>
>> It depends.... 
>> 
http://www.atotech.com/data/publications/pcb/Immersion_Tin-Kinetics_of_Whisker_growth.pdf


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