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Date: | Thu, 6 Jun 2002 09:22:16 -0400 |
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Pankaj, Kong, Technetters,
At least two people have referred to solder analysis and tin/lead ratio. I
recommend finding out what the uncertainty is in the tin measurement before
taking action. Once I asked Kester's quality department what the
uncertainty was and they did not know, only referred me to J-STD-006. That
spec says "component elements...shall not deviate from ther nominal mass
percentage...by more than 0.50% when their nominal percentage is greater
than 5.0%". I leave it to others to advise on how close to 63% the tin
needs to be for acceptable performance. Lou Hart
-----Original Message-----
From: Karnwal, Pankaj [SMTP:[log in to unmask]]
Sent: Thursday, June 06, 2002 1:47 AM
To: [log in to unmask]
Subject: Re: [TN] TN: Smooth bright solder Joint
Hi Kong
Did you check the solder pot analysis I mean the Sn /Pb ratio , I think
your
pot has not exact required ratio (63/37).Do the solder analysis from a lab
and add tin accordingly.
BR
Pankaj.
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