Coil component magnetic base
AssigneeMurata Manufacturing Co., Ltd.
InventorsGota Shinohara, Takuya Ishida
Life of this patent
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Abstract
A coil component includes a magnetic portion that includes metal particles and a resin material, a coil conductor embedded in the magnetic portion and having a core portion, and outer electrodes electrically connected to the coil conductor. The magnetic portion includes a magnetic outer coating and a magnetic base having a protrusion portion. The coil conductor is disposed on the magnetic base such that the protrusion portion is located in the core portion. The magnetic outer coating is disposed so as to cover the coil conductor, and the bottom surface of the magnetic base includes a recessed portion in an area opposite to the protrusion portion.
Claims19
A coil component comprising:
- a magnetic portion that includes metal particles and a resin material;
- a coil conductor embedded in the magnetic portion and having a core portion, the coil conductor being wound in an α-winding form;
- and
- outer electrodes electrically connected to the coil conductor,
- wherein
- the magnetic portion includes
- a magnetic base having a protrusion portion, the protrusion portion extending from the magnetic base and including an end positioned a spaced distance from the magnetic base, and
- a magnetic outer coating, and
- a filling factor of the metal particles in the magnetic base is 75% or less, and a filling factor of the metal particles in the magnetic outer coating is 75% or more,
- the coil conductor is disposed on the magnetic base such that the protrusion portion is located in the core portion,
- the magnetic outer coating covers the coil conductor and the end of the protrusion portion,
- the coil conductor is made of a wire, the wire is a rectangular wire, and a thickness of the rectangular wire is about 0.04 mm or more,
- a protective layer containing Ti and resin is disposed on the magnetic portion,
- a length of the coil component is from about 0.9 mm to 2.2 mm, and
- a width of the coil component is from about 0.6 mm to 1.8 mm.
Dependencies are inferred from the claim text.