PALLADIUM-COATED COPPER WIRE FOR BALL BONDING

摘要

PROBLEM TO BE SOLVED: To provide a palladium (Pd)-coated copper wire for ball bonding, which is suitable for mass production, and enables the uniform distribution of palladium (Pd) fine particles over the surface of a molten ball.SOLUTION: A palladium (Pd)-coated copper wire for ball bonding is 10-25 μm in wire diameter, and comprises a core material made of pure copper (Cu) or a copper alloy having a copper (Cu) purity of 98 mass% or more; and a palladium (Pd) extension layer formed on the core material, and including sulfur (S), phosphorus (P), boron (B) or carbon (C).SELECTED DRAWING: None