You don't want to mix the fluxes, but I don't see how that is a problem because after the SMT process all of the water soluble flux should be gone.
The issue is..."should be".
But this is actually a common practice in the industry. It could only lead to problems if the original water soluble flux is not cleaned completely.

Maybe.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steven Kelly
Sent: Thursday, June 20, 2013 8:01 AM
To: [log in to unmask]
Subject: [TN] Mixing solders,

Hi All,
I have been looking in the archives but can't seem to find what I want an answer to . I have a customer who wants us to use water soluble RoHS for the SMT process but wants no-clean RoHS for the touch-up. Is this recommended? Regards Steve Kelly


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