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May 2002

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Subject:
From:
Alex Krstic <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 9 May 2002 13:06:00 -0600
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Hi Jim.  My two cents worth are with regards to AVXs Transguard series of
components.  They have a PdPtAg terminations the reference document is available
at

http://www.avxcorp.com/docs/techinfo/smttrsgd.pdf


We ended up using a secondary process and touched up the "questionable"
connections.

Alex


-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Thursday, May 09, 2002 7:41 AM
To: [log in to unmask]
Subject: [TN] RePalladium Leads

- I have, as a consultant, dealt with a couple of cases of "non-wetting"
and/or "poor wetting" on palladium leads.  Microsectional analysis ultimately
disclosed that "wetting" had occurred, but the visual cues customarily
associated with wetting of tin/lead solders were not in evidence.  Faced with
the conventional "footprint in the mud" connection characteristics my
recommendation would be to conduct destructive physical analysis on a couple
of representative examples and confirm/deny the presence of wetting.  You may
end up changing flux to achieve satisfactory wetting or you may need to
"calibrate" your inspection crew (not an easy chore).  Hope the above helps
some.
Regards, Jim Moffitt, Moffitt Consulting, Noblesville, IN

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