Hello Ken,

We build hi-rel boards and many of our customers require that we have the
parts with pure tin finished leads/solder terminations refinished with a
Sn-Pb solder such as Sn63Pb37. It is a contractual requirement many times so
we just do it as they say. So, in many ways it is pretty straightforward for
us.

We use a proven company called Corfin Industries who specialize in this
process. The cost is not cheap, however. Piece part cost may run around $2
-$5 / part depending on geometry....

Best Regards,
- Joe


-----Original Message-----
From: Bloomquist, Ken [mailto:[log in to unmask]] 
Sent: Wednesday, January 24, 2007 10:25 AM
To: [log in to unmask]
Subject: [TN] Lead-Finish Question

Here's a question for all the high rel people out there. We've received
a couple of notifications from major component suppliers that they will
no longer supply the parts we need with a SnPb finish. Instead they are
only supplying them with "Matt (Matte) Tin" finish. They do not talk
about any under plating which would be desirable for minimizing tin
whiskers.

How are you people who build for DOD and medical handling these
situations? Am I being too sensitive about Matt Tim?

By the way these are single source and SMT parts.

Thanks in advance,

KennyB

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