Dark Conductive Residues

Munson, Terry
March 2002
Circuits Assembly;Mar2002, Vol. 13 Issue 3, p58
Trade Publication
Examines the impact of sulfur contact on copper traces in the printed circuit board. Occurrence of dark residue around the copper metal traces and numerical labels on the board; Use of scanning electron microscopy with energy dispersive spectroscopy on corroded board; Causes of the dark conductive residues; Protection of the product from exposure to solution.


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