Ivan,
Make sure you talk to your water wash sales guy (or better yet his technical
guy) and the no-clean flux supplier to make sure your system will remove all
the residues of both fluxes systems and not result in the trapping of water
wash residues in the remaining no-clean residues.

regards,
Bev Christian
XLTEK

-----Original Message-----
From: Ivan Barrios [mailto:[log in to unmask]]
Sent: Monday, April 24, 2000 2:52 PM
To: [log in to unmask]
Subject: [TN] Water Soluble Flux on SMT and No Clean Flux on Wave solder


Hello Technetters:
We are trying to go to No clean flux in our wave solder process. However,
we still run some of these products with water soluble paste in SMT. We
will still wash the boards after SMT to remove any of the residues from SMT
process. Any issues foreseen with mixing the two types of manufacturing
practices (No clean and Water soluble) in the same product? (corrosion,
reactivation of crystalized WS flux while it passes thru wave, etc)
Any and all responses are welcome

Ivan Barrios

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