SOLDER ALLOY, SOLDER BALL USING IT, AND SOLDERED PART EXCELLENT IN DROP IMPACT RESISTANCE

摘要

PROBLEM TO BE SOLVED: To provide a solder alloy, a solder ball and a soldered part which satisfy requirements for melting points and mechanical strength and also are excellent in drop impact resistance. SOLUTION: The invented solder alloy contains 0.1-2.0 mass% Ag, 0.05-2.0 mass% Zn, and the balance being Sn and inevitable impurities and is excellent in drop impact resistance. The invented solder ball is formed by spheroidizing the solder alloy. The soldered part is formed by connecting the solder alloy and solder ball to an Ni electrode. COPYRIGHT: (C)2009,JPO&INPIT