Electronics Forum: fumed silica (3)

Solder mask discoloration

Electronics Forum | Wed Aug 17 22:41:37 EDT 2005 | davef

Peter are you having fun with solder masks erwat? We saw this years ago with LPI solder masks. It shows occasionally with other masks. We agree with Russ. If nothing [eg, alcohol, flux thinner, acetonitrile, or water] dissolves the haze, then it

PCB with stains bleach after flux aqueous wash

Electronics Forum | Thu Feb 12 12:30:16 EST 2015 | stevezeva

I remembered something from the TechNet a long time ago about heating the board with a heat gun to see if the white spots disappear. I searched the archives and found this from Bill Kenyon: Quick identification of solder mask white spots- if it is t

Express Newsletter: fumed silica (5)


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