Bath for immersion plating tin-lead alloys

摘要: The invention provides a bath for immersion plating substance with tin-lead alloy, which includes tin(II) ions, lead(II) organic sulfo groups and thiourea or mixture of derivative complexing agent. allow insoluble complexes to be stably dissolved in the solution bath; thereby there is no need retain at high temperature. Compared conventional baths plating, attains stable longer life itself. Addition prevents whiskers from being deposited allows uniform sufficiently smooth plating.