Patent ID: 11940401
Assignee: KOA CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A sulfurization detection resistor comprising an insulated substrate having a rectangular parallelepiped shape, a pair of front electrodes formed at both ends on a main surface of the insulated substrate, resistive elements and sulfurization detecting conductors, each resistive element and each sulfurization detecting conductor being formed in series between the pair of front electrodes, and a protective film formed to entirely cover the resistive elements and partially cover the sulfurization detecting conductors,
wherein the multiple sulfurization detecting conductors are connected in parallel to the front electrodes and have their sulfurization detecting portions that are exposed out of the protective film;
the multiple sulfurization detecting conductors respectively have material compositions having principally Ag but with different contents of Pd; and
different timings are set for the multiple sulfurization detecting portions respectively to become disconnected depending on a cumulative amount of sulfurization.