Taiyo Yuden Co., Ltd.

Tetsuyuki Suzuki

Kenji Otake

Atsushi Tanada

Masahiro Hachiya

Kiyoshi Tanaka

Daiki Mimura

Keizo Kawamura

A coil component according to one aspect of the present invention includes: a magnetic base body containing a plurality of metal magnetic particles and a binder binding the plurality of metal magnetic particles together; and a coil conductor provided in the magnetic base body and including a winding portion wound around a coil axis, wherein as viewed from a direction of the coil axis, the magnetic base body includes a core region enclosed by the winding portion, and a ratio of an area of the core region to a sum of an area of the winding portion and the area of the core region is 32% or larger.

Coil component, circuit board, and electronic device

A coil-type electronic component having a coil inside or on the surface of a base material is characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains inter-bonded via oxide layers, multiple crystal grains are present in each soft magnetic alloy grain, and the oxide layers preferably have a two-layer structure whose outer layer is thicker than the inner layer.

Coil-type electronic component

A coil-type electronic component having a coil inside or on the surface of a base material, characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains whose main ingredients are iron, silicate and chromium, and that an oxide layer is formed on the surface of each soft magnetic alloy grain, where the oxide layer is produced as a result of oxidization of the grain and has more chromium than the alloy grain, and this oxide layer has a two-layer structure constituted by an inner layer whose main ingredient is chromium oxide and an outer layer whose main ingredient is iron-chromium oxide, and the outer layers of soft magnetic alloy grains are inter-bonded.

A ceramic composition is provided with a glass based material including SiO,, Al,O,, B,O,, and at least one selected from a group of Cao and MgO, and particles dispersed in the glass based material. The particles includes CaSiO,or MgSiO,as a main component. A sintered state of the ceramic composition has an anti-bending strength of 1500 kg/cm,or higher.

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Gunma, Japan

Tetsuyuki Suzuki