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US 11,915,854 B2Granted
Wire coil component and method for producing wire coil component
AssigneeMurata Manufacturing Co., Ltd.
InventorsYuya Ishida, Katsuyuki Takahashi, Hiroyuki Sugie, Keijiro Kojima
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Abstract
A wire coil component includes a shaped article, a wire wound around the shaped article, and terminal electrodes to which the ends of the wire are connected. The shaped article is formed from a magnetic resin containing a binder resin and a magnetic metal powder and has a thermal expansion coefficient of about 12 ppm/K or more and about 16 ppm/K or less (i.e., from about 12 ppm/K to about 16 ppm/K) from −55° C. to 150° C.
Claims17
A wire coil component comprising:
- a shaped article formed from a magnetic resin that contains a binder resin and a magnetic metal powder and having a thermal expansion coefficient of from 12 ppm/K to 16 ppm/K, from −55° C. to 150° C.;
- an oxide coating covering at least part of a surface of the shaped article;
- a wire wound around the shaped article;
- and
- terminal electrodes to which ends of the wire are connected,
- wherein the binder resin is an epoxy-containing resin, the epoxy-containing resin containing at least one selected from the group consisting of a bisphenol-A epoxy resin, a bisphenol-F epoxy resin, an epoxy polysiloxane, an alicyclic epoxy resin, and a tetrafunctional naphthalene-based epoxy resin, and
- the oxide coating comprises a metal oxide with an organic chain chemically or covalently bonded thereto.
4 more elements
A wire coil component comprising:
- a shaped article formed from a magnetic resin that contains a binder resin and a magnetic metal powder and having a thermal expansion coefficient of from 12 ppm/K to 16 ppm/K, from −55° C. to 150° C.;
- an oxide coating covering at least part of a surface of the shaped article;
- a wire wound around the shaped article;
- and
- terminal electrodes to which ends of the wire are connected,
- wherein a percentage by weight of the binder resin in the shaped article is from 1 wt % to 4 wt %, and
- the oxide coating comprises a metal oxide with an organic chain chemically or covalently bonded thereto.
4 more elements
Dependencies are inferred from the claim text.