COPPER ALLOY FOR ELECTRONIC AND ELECTRICAL EQUIPMENT, COPPER ALLOY THIN FILM FOR ELECTRONIC AND ELECTRICAL EQUIPMENT, CONDUCTIVE PART FOR ELECTRONIC AND ELECTRICAL EQUIPMENT AND TERMINAL

摘要

PROBLEM TO BE SOLVED: To provide a copper alloy for electronic and electrical equipment securely and sufficiently excellent in stress relaxation resistance and excellent in strength, flexural workability and shearing workability, and to provide a copper alloy thin film for electronic and electrical equipment, a conductive part for electronic and electrical equipment and a terminal using the same.SOLUTION: There is provided a copper alloy for electronic and electrical equipment which contains more than 2.0 mass% and 36.5 mass% or less of Zn, 0.10 mass% or more and 0.90 mass% or less of Sn, 0.15 mass% or more and less than 1.00 mass% of Ni, 0.005 mass% or more and 0.100 mass% or less of P and the balance of Cu and inevitable impurities, where the atomic ratio of the content of the elements satisfies 3.0