Electronics Forum: yellowish tin (Page 1 of 1)


Electronics Forum | Thu Sep 28 07:57:58 EDT 2006 | cpm

Hi, Expert, Currently, I'm facing a very critical problem on my HAL leadfree finishing PCBs at my customer end. We run the HAL leadfree (Tin, cu and ni) board by using HAL leadfree machine (temperature about 270 deg.C) and go for normal water post c

Flux turns BRIGHT yellow when in contact with Tin/ Lead

Electronics Forum | Wed Apr 01 11:41:34 EDT 2020 | emeto

Very interesting.Safety datasheet suggest acid that might turn yellowish. I am interested is it cleaned easily with water?


Electronics Forum | Tue Oct 03 17:04:07 EDT 2006 | cuculi54986@yahoo.com

Glenn, What alloy are you using for Pb-free HASL? You say tin copper nickel, but is it SN100C? Against manufacturing engineering's recommendation, my company specified simply "Pb-free HASL" as the finish for our Pb-free PCBs. One of our suppliers


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