26-06-2014 дата публикации
Номер: US20140176286A1
A coil conductor and a via electrode placed away from the coil conductor are embedded in a magnetic layer. The magnetic layer is sandwiched between a pair of non-magnetic layers. The coil conductor and the via electrode are formed from a conductive material containing Cu as its main constituent, and the magnetic layer is formed from Ni—Mn—Zn ferrite where the CuO molar content is 5 mol % or less, and (x, y) falls within the range of A (25, 1), B (47, 1), C (47, 7.5), D (45, 7.5), E (45, 10), F (35, 10), G (35, 7.5), and H (25, 7.5) when the molar content x of FeOand the molar content y of MnOare represented by (x, y). Thus, insulation properties can be ensured, favorable electrical characteristics can be achieved, and a ceramic electronic component is achieved which is able to be reduced in size. 1. A ceramic electronic component comprisinga coil conductor and a via electrode placed away from the coil conductor, the coil conductor and the via electrode being embedded in a magnetic layer,the coil conductor and the via electrode being formed from a conductive material containing Cu as a main constituent, and the magnetic layer being formed from a ferrite ceramic composition,{'sub': 2', '3', '2', '3, 'the ferrite ceramic composition containing at least Fe, Mn, Ni, and Zn, a Cu molar content thereof being 0 to 5 mol % in terms of CuO, and when a Fe molar content x mol % in terms of FeOand a Mn molar content y mol % in terms of MnOare represented by (x, y), the (x, y) falls within a region surrounded by A (25, 1), B (47, 1), C (47, 7.5), D (45, 7.5), E (45, 10), F (35, 10), G (35, 7.5), and H (25,7.5).'}2. The ceramic electronic component according to claim 1 , wherein the Zn molar content is 33 mol % or less in terms of ZnO.3. The ceramic electronic component according to claim 1 , wherein the Zn molar content is 6 mol % or more in terms of ZnO.4. The ceramic electronic component according to claim 1 , wherein the magnetic layer is sandwiched between a pair of non- ...
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