Structure of the coating the copper wire ultrasonically bonded

A be the type and diameter of the covering material or core coating copper wire is changed, without setting the individual bonding conditions, can be stably ultrasonically bonded, the process at the time of ultrasonic bonding window width to provide a structure of a wide ultrasonic bonding coating copper wire. To A core material surface, the grooves of the large number of streaks cloud along the longitudinal direction of the wire is formed annularly, on the core material, noble metals or alloys oxidation resistance than the core material (hereinafter , and wherein the coating material consisting of) of "noble metals" is the surface form coated. .FIELD 1