IPC-A-610D, section 10.4.1, states as acceptable, Class 1,2,3 "No
discernible residue from cleanable fluxes is allowed" and "Flux residues
from no-clean processes may be allowed."  The 'may be allowed' part I
believe covers the bases for those products that have to be super clean
depending on its end-usage.  In general, no-clean will leave some residue
which is acceptable since it's activity is very low.

Gerry Savard



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jordan, Dave
Sent: Monday, June 27, 2005 8:46 PM
To: [log in to unmask]
Subject: [TN] No-clean residue requirements

I've got a customer claiming that the slight residue left on a board by
no-clean flux is a fault under either IPC-A-610 or J-STD-001. Perhaps I'm
missing it, but there doesn't seem to be any clear statement about no-clean
residue vs water wash in the standards. Any help out there? Thanks in
advance.

Dave
Production Operations
Nova Engineering

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