US 11,915,854 B2
Wire coil component and method for producing wire coil component
Yuya Ishida, Nagaokakyo (JP); Katsuyuki Takahashi, Nagaokakyo (JP); Hiroyuki Sugie, Nagaokakyo (JP); and Keijiro Kojima, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Mar. 4, 2019, as Appl. No. 16/291,979.
Claims priority of application No. 2018-045695 (JP), filed on Mar. 13, 2018.
Prior Publication US 2019/0287712 A1, Sep. 19, 2019
Int. Cl. H01F 27/29 (2006.01); H01F 1/14 (2006.01); H01F 1/28 (2006.01); H01F 17/04 (2006.01); H01F 27/28 (2006.01); H01F 41/077 (2016.01)
CPC H01F 27/2828 (2013.01) [H01F 1/143 (2013.01); H01F 1/28 (2013.01); H01F 17/045 (2013.01); H01F 27/2804 (2013.01); H01F 27/29 (2013.01); H01F 27/292 (2013.01); H01F 41/077 (2016.01); H01F 2017/048 (2013.01)] 17 Claims
OG exemplary drawing
 
1. 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.