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AssigneeKabushiki Kaisha Toshiba
InventorsNaoki Shuto, Fumio Ueno, Yoshiko Goto, Akihiro Horiguchi, Mitsuo Kasori, Motomasa Imai
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A resistor element includes a hollow cylindrical sintered body and a pair of electrodes formed on the upper and lower surfaces of the sintered body. The sintered body contains ferrite as a main constituent and contains 0.05 to 10% by volume of an insulator phase formed at the crystal grain boundary of the ferrite crystals. An insulating layer is formed to cover the side surface of the sintered body. The sintered body contains an oxide material selected from the group consisting of 0.005 to 2.0% by weight of bismuth oxide calculated in terms of Bi.sub.2 O.sub.3, 0.01 to 3.0% by weight and 0.005 to 2.0% by weight of silicon oxide and aluminum oxide calculated in terms of SiO.sub.2 and Al.sub.2 O.sub.3 respectively, and 0.01 to 3.5% by weight and 0.001 to 1.6% by weight of silicon oxide and calcium oxide calculated in terms of SiO.sub.2 and CaO, respectively.
An electrical resistor element, comprising a sintered body containing a ferrite ceramic material of a spinel structure represented by the chemical formula Me.sub.x Fe.sub.3-x O.sub.4, where Me denotes a metal element, and x is 0<x<3;
An electrical resistor element, comprising a sintered body containing a ferrite ceramic material of a spinel structure represented by the chemical formula Me.sub.x Fe.sub.3-x O.sub.4, where Me denotes a metal element, and x is 0<x<3;
A method of manufacturing an electrical resistor element, comprising a sintered body containing a ferrite ceramic material of a spinel structure represented by the chemical formula Me.sub.x Fe.sub.3-x O.sub.4, where Me denotes a metal element, and x is 0<x<3;
Dependencies are inferred from the claim text.