I'm looking for pointers to information on how to clean RMA flux from
  circuit boards.  We're doing contract assembly and the design currently
  specifies RMA flux.  (Build specs are basically WS-6536 and Mil-Std-2000,
  NOT 2000A or J-Std) We've got an in-line aqueous system (using Armakleen
  detergents) in place, but it's removing markings from diodes (and the
  markings are required to be readable).  We've also been using a solvent
  vapor system (AK-225), but it's attacking the adhesive bonding heatsinks
  to the boards.

  Anybody care to make suggestions for RMA flux cleaning approaches or
  pointers to likely candidates for a)information or b)product
  representatives?

  Thanks
  Steven Axdal
  General Dynamics Information Systems
  [log in to unmask]             612-853-3830

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