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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