PURPOSE: To eliminate a nonuniformity of a current distribution between an electrode conductor part and a resistance and to enhance a mechanical strength at a bonded part by a method wherein a core wire of a lead wire is bonded to the electrode conductor part after the core wire has been wound on a metal piece.

CONSTITUTION: A core-wire bundle 5 of a lead wire 4 which has been wound on a metal piece 6 is bonded to a plate-shaped electrode conductor part 3. As a result, a nonuniformity of a current distribution between the conductor part 3 and a plate-shaped thin-film resistance 2 can be eliminated without making the conductor part 3 large, and a mechanical strength at a bonded part can be enhanced.