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January 1998

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Subject:
Re: Serial # on PCB Washing off in rinse -Reply
From:
Doug Pauls <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 30 Jan 1998 10:38:23 EST
Content-Type:
text/plain
Parts/Attachments:
text/plain (27 lines) 
In a message dated 98-01-28 11:08:02 EST, you write:

>
>  One simple method of protecting stamped inks is mask them
>  using peelable-latex soldermask that is used for
>  wavesoldering application.  Let it dry prior to a cleaning
>  cycle and remove the mask afterward.

The only caution I would give here is that many of the peelable-latex masks
leave chloride residues behind.  Not a good idea and I don't know how well
these residues would come off in a 200-proof alcohol wash.

Doug Pauls
CSL

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