SOLDER WITHOUT LEAD AND COUPLING WITHOUT LEAD

摘要

PROBLEM TO BE SOLVED: To provide a solder which does not contain lead or harmful substance and has an excellent electric characteristics and to provide a coupling which does not contain lead. SOLUTION: The solder which does not contain lead but contains zinc and tin has a liquid phase temperature of≥260°C. The solder contains≤5wt.% nickel and≤0.5wt.% aluminum. Alternatively, the solder which has the liquid phase temperature of≥260°C contains 30 to 70wt.% zinc,≤5wt.% nickel and the balance tin. Further, the coupling using the solder without lead is provided. COPYRIGHT: (C)2004,JPO