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- From: tomb@hplsla.hp.com (Tom Bruhns)
- Date: Thu, 23 Jul 1992 00:11:40 GMT
- Subject: Re: Green Layer on Circuit Boards?
- Message-ID: <5170215@hplsla.hp.com>
- Organization: HP Lake Stevens, WA
- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!mips!sdd.hp.com!hp-cv!hp-pcd!hplsla!tomb
- Newsgroups: sci.electronics
- References: <1992Jul21.134601.8985@cci632.cci.com>
- Lines: 17
-
- adw@cci632.cci.com (Allen Williams (co-op)) writes:
-
- > However, one step that I think would be a good addition is the green
- >layer of plastic insulation that commercial circuit boards have. I've looked
- >in the Mouser and Digi-Key catalogs, and can't find anything that looks like
- >the type of insulation that would go on top of the traces.
-
- The layer is a solder mask, to keep wave solder machines from coating
- everything. If you make your blank and hand solder the parts into it,
- you could reasonably spray it with something like Krylon clear plastic
- spray. That would make repairs a bit stinky, but maybe not too bad.
- Someone else mentioned a solderable mask spray (that would evaporate
- with soldering temperatures). Since polyurethane magnet wire insulation
- does that, perhaps a polyurethane spray would work. Experiment and let us
- know how it works! (As you probably guessed, solder mask easily
- withstands soldering temperatures for a few seconds at least.)
-
-