My understanding is that the matte tin finishes do not eliminate tin
whisker. Some argue that the finish reduces the length of the whiskers
that are likely to form. I wish I had ready access to the presentations
that I have seen on this subject. Let's see where this thread goes.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Gaby Bogdan
Sent: Monday, January 27, 2003 1:36 AM
To: [log in to unmask]
Subject: [TN] Tin whiskers


After storage of about 6 months we saw Tin whiskers inside the hole
barrel on Immersion Tin plated boards. It is the second time we found
them, and the batches were from two different suppliers.
According to our knowledge, they they are using the immersion tin
technologies which are said to prevent whisker formation when applied
properly.
What can be the cause?
Gaby
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