I would be looking to see what operators are using to wipe down their stations and mats to make them oh so shiny...
Also check the actual wipers to see what has collected on them...
Paul
Paul Edwards
Process/Quality Engineering
Surface Art Engineering
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Richard Kraszewski
Sent: Tuesday, September 11, 2012 9:10 AM
To: [log in to unmask]
Subject: [TN] Source of IC Contamination Species
Occasionally, IC analyses are reported to have elevated levels of acetates and formates. Is it the general consensus that source of these contamination is assumed to be the decomposition of larger molecular weight weak organic acids found in soldering fluxes? I can't imagine that any manufacturer would actually be placing acetic or formic acids directly into a flux formulation. These are much too volatile and aggressive.
Thoughts?
Rich Kraszewski
Senior Process Engineer
PLEXUS
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