Electronics Forum | Tue Jul 27 13:48:45 EDT 2004 | Ralf
Hi Recently i have noticed that after reflow (hot air oven) on the solder lands without components but with solder(screen printing) there is discoloration. It looks like gasolin spilled on the wet road (rainbow). Any idea and reason Ralf
Electronics Forum | Fri Jan 19 10:43:28 EST 2007 | jimmyjames
You guys are all joking right?! There aren't any contaminates in your solder, the different colors on the surface are completely normal and even expected. The top layer of solder oxidizes and the structure of the surface resembles crystals, refract
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