Alcohol is not a good solvent for flux removal. You may remove some
rosin but most of the dangerous ionic residues, especially metallic
salts from the reaction between the flux and oxides will remain
untouched. If you cannot find a better solution, you would be better off
not cleaning a mild or "no-clean" flux residue.

Brian

Wilson, Bob wrote:
> Hi,
> 
> I have a lead who is an IPC J-STD-001 certified trainer and she is very
> good.  We are using a board assembly that has a nut plate under a
> high-density 26-pin DSUB.
> 
> The girls were soaking the assemblies in an alcohol bath and the lead
> assembler said she didn't want the boards soaked in alcohol because it
> isn't 100% guaranteed to remove all the flux from under the connector or
> nut plate.
> 
> She has the girls trying to get a brush under there to get the flux out.
> 
> Am I nuts or have I been under the wrong impression that alcohol and
> compressed air is the best way to clean a fluxed board?  I hate the idea
> of me saying something like, "But...but that's the way we've always done
> it!"
> 
> (I don't have J-STD-001 here on the design side).
> 
> Thanks a bunch.
> 
> Bob Wilson
> 
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