Every time I see "White Tin" as a process, I get queezy.

For the record, white tin is a metallurgical form of tin.  The company (I'll
not name) that is trying to capitalize on using it as a process name has
bastardized terminology.  Of course, your other choice is gray tin which is
unstable with poor properties and forms at low temperatures.  So all of you
are using white tin, whether you know it or not.  Otherwise, you'd be out of
business.

I'm sorry...  I just had to get it off my back.

Carey

-----Original Message-----
From: Jorge A Rodriguez <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Thursday, February 10, 2000 8:07 AM
Subject: [TN] White Tin PWB


>We are about to start using immersion tin PWBs (white tin) ,  the boards we
>currently use are HASL and OSP. Are there any changes with the SMT process,
>component termination finish or reflow process when white tin boards are
used. I
>know that white tin provides a better pad finish than HASL, similar to OSP,
but
>wihout the organic coating.  Any comments.
>
>
>Any iformation would be appreciated.
>
>
>Jorge Rodriguez
>Process Engineer
>Conexant Systems Inc
>
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