PURPOSE: To provide a variable resistor fitted with respective terminals whose surface plated layers are not melted down at molding temperature in order to form a substrate by integrally molding fixed side terminals and variable side terminal.

CONSTITUTION: In the variable resistor fitted with a substrate 11 comprising an insulating resin, a pair of fixed side terminals 12, 13 integrally molded with the substrate 11 with one end parts thereof expanded on the substrate 11, a resistor film 5 arranged on the substrate 11 to be connected to one end parts, a slider 6 sliding over the resistor film 5 and a variable side terminal 14 connecting to the resistor film 5 through the intermediary of the slider 6, the surfaces of the fixed side terminals 12, 13 and the variable side terminal 14 are composed of the lower layer comprising a nickel or nickel alloy plated layer and the upper layer comprising an Au plated layer.