A resistor 1 that comprises a resistance substrate 21 wherein a resistance body 13 and a pair of electrodes 17a, 17b are formed upon an insulation substrate 15 and that is structured such that an upper surface and side surfaces of the resistance substrate 21 are covered by an insulating exterior material 3 and such that there are harness wires 7a, 7b that have one end parts that are connected, respectively, to the electrodes 17a, 17b and that pass through and extend to the outside of the exterior material 3, the electrodes 17a, 17b being formed to avoid an end part of the insulation substrate15, and the joined parts of the pair of electrodes 17a, 17b and the one end parts of the harness wires 7a, 7b being positioned such that the creepage distance from the joined parts to a bottom surfaceend part of the insulation substrate 15 is at least a prescribed distance. By means of said configuration, the present invention provides a resistor wherein the creepage distance between a conductionpart of the resistor and a metal case on which the resistor is mounted is assured.