| 摘要 |
PROBLEM TO BE SOLVED: To provide a MnZn ferrite core having high electric resistivity by forming an insulator layer on a surface of a MnZn ferrite sintered body, and to provide a coil type electronic component using the MnZn ferrite core. SOLUTION: The MnZn ferrite core 9 is composed of the MnZn ferrite sintered body 19, and the insulator layer 5 formed on the surface of the MnZn ferrite sintered body by an aerosol depositing method and made of at least one of oxide-based ceramic, nitride-based ceramic, and carbide-based ceramic. A pair of external electrodes 1 is formed on the MnZn ferrite core, and a core portion 3 of the MnZn ferrite core is wound with an insulating coated copper wire 4 to form a coil, both ends 8 of which are electrically connected to external electrodes to constitute a winding inductor 10 as an example of the coil type electronic component. Consequently, the MnZn ferrite core having high electric resistivity and the coil type electronic component having high reliability are obtained. COPYRIGHT: (C)2011,JPO&INPIT
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