Resistance element and method for manufacturing the same
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United States of America Patent
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Sep 11, 2018
Grant Date -
Jul 12, 2018
app pub date -
Dec 14, 2017
filing date -
Jan 6, 2017
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Abstract
A frequency-dependent resistance element includes an element assembly composed of a sintered magnetic material and a coil conductor embedded in the element assembly. The sintered magnetic material is composed of a primary component containing Fe, Zn, Ni, and Cu and a secondary component containing Co. In the primary component, on a percent by mole basis, the Fe content is 46.79 to 47.69, the Zn content is 12.60 to 24.84, and the Ni content is 19.21 to 32.36 in terms of Fe2O3, ZnO, and NiO, respectively. The molar ratio (Ni:Zn) of Ni to Zn is (1−X):X, where X is from about 0.28 to about 0.56. The content of Co in terms of Co3O4 is 1.0 to 10.0 parts by mass relative to 100 parts by mass of the primary component containing Fe, Zn, Ni, and Cu in terms of Fe2O3, ZnO, NiO, and CuO, respectively.
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