Electronics Forum: tarnish duroid (Page 1 of 1)

raw copper on pcb

Electronics Forum | Thu Jun 07 05:11:42 EDT 2012 | cp38260

Hi, I have pcbs (Duroid/RT 5880) with raw copper, soldered in vapour-phase chamber at 230 degrees Celsius. During soldering, copper gets tarnished. Cleaning with Vigon A250 removes the tarnished layer. Indeed, in the VigonA250 techn. datasheet it is

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