I thought 141 was dead some years ago, anyway IMHO it is ineffective neat as
cleaner even on non activated fluxes, and only slightly less ineffective
when blended with polar agents like methanol.
IF you are stuck with solvent cleaning consider if you can modify your
process to co-solvent cleaning. The 141 then becomes a rinse and the process
overall does produce a measurably improved result
Regards
Mike Fenner
Indium Corporation
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Juan T. Marugán
Sent: Tuesday, September 30, 2008 8:33 AM
To: [log in to unmask]
Subject: Re: [TN] Big problem when coating with Parylene C.
Brian,
The solder paste we are using is a ROL0 and the cleaning solven is 141-b.
We agree with you that something is preventing the adhesion. And about your
interesting theory, can you tell us how to "see" the invisible flux
residues?
PD. Correct. It is polyimide, not polyamide.
Juan
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