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Re: Laminate base material

Electronics Forum | Mon Mar 27 20:52:22 EST 2000 | Dave F

Marc: In printed circuit board fabrication, fabricators place sheets of prepreg between each pair of glass cores. They stack these layers into books. As they heat and press the books, the sheet melts into an epoxy glue. The thickness of the prepr

Re: white residue

Electronics Forum | Fri Jan 29 05:14:06 EST 1999 | Graham Naisbitt

Hi guys, I really am at a loss to understand this one. It would appear that there may be some reaction between the flux and the resist? Or maybe you have an OSP on the board that is reacting during soldering? As a fast fix, maybe you should try a

Re: white residue

Electronics Forum | Wed Feb 10 12:52:21 EST 1999 | Dick Casagrande

|I'm getting in a little late on this but my 2 cents is: We have been using no-clean flux for a few years now but up till last month were still cleaning (the white residue) our boards (all thru hole). Finally did some investigation and found the flux

Sm t net
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