Tdk Corporation

Shou Kawadahara

Shigeki Sato

Hitoshi Ohkubo

Masazumi Arata

Manabu Ohta

Hokuto Eda

Takahiro Kawahara

Yoshihiro Maeda

Takashi Suzuki

Yukio Takahashi

Ryuichi Wada

Raitarou Masaoka

Hiroshi Momoi

In a coil component and a method for manufacturing the same, a winding part of a coil is grown by plating so as to extend between resin walls of a resin body provided before the coil is grown by plating. The resin wall is interposed between adjacent turns of the winding part of the coil during the plating growth, and therefore contact between adjacent turns of the winding part of the coil cannot occur.

Method for manufacturing coil component having resin walls

Coil component having resin walls

In a coil componentand a method for manufacturing the same, a winding part of a coil is grown by plating so as to extend between resin walls of a resin body provided before the coil is grown by plating. The resin wall is interposed between adjacent turns of the winding part of the coil during the plating growth, and therefore contact between adjacent turns of the winding part of the coil cannot occur.

Coil component having resin walls and method for manufacturing the same

In a coil component (planar coil element), at least part of a third metal magnetic powder constituting a metal magnetic powder and having a minimum average grain diameter is uncoated, which suppresses a reduction in magnetic permeability. On the other hand, the remaining metal powders are coated with glass, which improves the insulating properties of a metal magnetic powder-containing resin and reduces core loss.

Coil component with covering resin having multiple kinds of metal powders

A ferrite composition includes a main component having 46.0 to 49.8 mol % of an iron oxide in terms of FeO, 5.0 to 14.0 mol % of a copper oxide in terms of CuO and 8.0 to 32.0 mol % of a zinc oxide in terms of ZnO, and a remainder of the main component is composed of a nickel oxide; and as subcomponents, with respect to 100 wt % of the main component, 0.5 to 6.0 wt % of a silicon oxide in terms of SiOand 0.01 to 2.0 wt % of a boron oxide in terms of BO. Further, as a subcomponent, 0.01 to 0.17 wt % of potassium oxide in terms of KO or 0.3 to 2.0 wt % of tin oxide in terms of SnOmay be included.

Ferrite composition and electronic component

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Tokyo, Japan

Shou Kawadahara