Coil component
AssigneeTDK Corporation
InventorsHokuto Eda, Kohei Takahashi, Takahiro Nemoto, Yuma Usami, Ryota Ishikawa
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Abstract
In a coil component, side surfaces of an element body are exposed to an outside, and on these exposed surfaces, an area ratio of a first magnetic powder is the largest. The first magnetic powder includes cobalt, which is less likely to be oxidized, and is difficult to oxidize compared to a second magnetic powder that does not include cobalt. Therefore, all of the side surfaces of the element body are difficult to oxidize as a whole surface, deterioration of the magnetic properties of the element body due to oxidation of the magnetic powder is suppressed, and in the coil component, improvement of coil characteristics such as an inductance value is realized.
Claims9
A coil component comprising:
- an element body including magnetic powder and having an exposed surface at least a part of the element body is exposed to an outside;
- and
- a coil disposed in the element body,
- wherein the magnetic powder of the element body is composed of a first magnetic powder and a residual magnetic powder other than the first magnetic powder,
- wherein the first magnetic powder includes a first element less likely to be oxidized than elements constituting the residual magnetic powder, and
- wherein an area ratio of the first magnetic powder is the largest with respect to an area ratio of the magnetic powder on the exposed surface of the element body.
Dependencies are inferred from the claim text.