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Whitish Solder Joint

Electronics Forum | Fri Apr 04 09:28:59 EST 2003 | davef

Q1: Anyone has any ideas on how this post-SMT reflow solder joint could have changed to whitish joint? A1: Dunno. You need to tell us more. For instance: * What is the appearance of this white residue? [eg, glassy / coarse, milky colored / opaque,

Re: White Residue

Electronics Forum | Mon Dec 06 08:55:11 EST 1999 | Dave F

Vinesh: The white residue is perfectly expected, when washing a no-clean with water (and some alcohol). In some cases, the white resin that you are seeing can be removed. Your paste supplier should be able to provide details. Recognize that clean

White Residue

Electronics Forum | Sat Dec 04 02:21:32 EST 1999 | Vinesh Gandhi

Hi All, I am facing a strange problem. One of my esteemed & valued customers has an unusual requirement of cleaning the board with IPA after soldering is complete. I am using alpha metals UP78 no clean sodler paste during reflow. This IPA cleanin

Problems with Vision and White Soldermask

Electronics Forum | Fri Aug 05 15:09:30 EDT 2016 | proceng1

I grabbed another White board that does have the "natural" board around the fiducials. Still no go. See pictures

Thermal Discoloration

Electronics Forum | Tue Jan 22 20:26:18 EST 2002 | davef

Help us visualize this better. * What color white [ie, yellow/white, green/white, a haze, etc.] are we talking about? * What size and shape are the spots? * Where are the spots located? * Etc Help us understand what�s going on by describing the sp

Re: White Residue / Vapor Degrease

Electronics Forum | Mon Jan 18 21:05:15 EST 1999 | Dave F

| I get white residue on my PCBs after vapor degreasing. No comments on the vapor degreaser. Yes, I still use one of these. I use a vapor degreaser and a 1,1,1 replacement solvent due to the quick clean and quick dry times. Anyway, I only get whi