CONNECTION METHOD FOR ELECTRONIC PART AND LEAD WIRE

摘要

PROBLEM TO BE SOLVED: To provide a connection method for an electronic part and a lead wire with which a firm and proper joint condition of the electrode and the lead wire can be obtained by solving a problem that a firm joint condition can not be obtained even if resistance welding of the electrode with large heat capacity and a lead wire with small heat capacity is performed when using copper with large heat conductivity for the electrode and the lead wire. SOLUTION: In a connecting method for resistance welding an end face of the lead wire 5 to the outer circumferential surface of an intermediate electrode 4, a ridge part 11 is projected on an end face of the lead wire, and a projection size of the lead wire of a welding electrode 12 on the lead wire side is about 0.9 mm which is smaller than the diameter of the lead wire and pinched. In a condition where the ridge part is turned sideways to line contact with an outer circumferential surface of an intermediate electrode and the ridge part of the lead wire is pressed on the intermediate electrode, a current for resistance welding is applied between the welding electrode 12 and the welding electrode 13 to perform resistance welding. COPYRIGHT: (C)2005,JPO&NCIPI