
plating, anodizing, & finishing Q&As since 1989
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Solderability of ELECTRO TIN PLATE PER ASTM B545
2006
I recently changed the finish of copper parts from "ELECTRO TIN PLATE PER MIL-T-10727" to "ELECTRO TIN PLATE PER ASTM B545
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". These copper parts carry a high electrical current (up to 40ADC) and are solder to a Printed Circuit Board. Since the finish change, the solderability of the parts has deteriorated and there is a significant voltage drop in the solder joints.
Is the ASTM B545
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equivalent to MIL-T-10727 regarding solderability? or should I specify a different finish?
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