WHISKER PREVENTIVE AGENT FOR TIN OR TIN ALLOY PLATING, AND METHOD OF WHISKER PREVENTION MAKING USE OF THE SAME

摘要

After performing a tin or tin alloy plating , even when left for 5000 hours at room temperature , caused quite a whisker the object of the present invention is to provide an easy means to stop and , (A) sulfuric acid , alkane sulfonic acids , alkanol sulfonic acid and one member selected from the group consisting of a derivative thereof , (B) a peroxide , and (C) is higher than the potential copper after the material for whisker inhibitor and be plated tin or tin alloy plating containing the metal ion is immersed in the agent for tin or tin alloy -coated whiskers of the above, the tin or tin alloy plating , characterized in that performing the tin or tin alloy plating provides a method for preventing whisker .