In message Oscar Cammuse writes
>
>Does anyone have experience with Sn coatings on boards in lieu of solder
>coatings and OSP coating?  What problems have you experienced?  Why is Sn
>coatings not so acceptable?
>
We have used immersion tin coatings which are very thin and these have a very
short shelf life of less than 2 weeks before solderability is unacceptable.
-- 
Paul Gould

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