US 12,087,487 B2
Coil component
Hirotaro Seino, Tokyo (JP); and Takayuki Arai, Tokyo (JP)
Assigned to TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed by TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed on Mar. 30, 2021, as Appl. No. 17/217,528.
Claims priority of application No. 2020-064762 (JP), filed on Mar. 31, 2020; application No. 2020-149825 (JP), filed on Sep. 7, 2020; and application No. 2021-034789 (JP), filed on Mar. 4, 2021.
Prior Publication US 2021/0304947 A1, Sep. 30, 2021
Int. Cl. H01F 27/24 (2006.01); H01F 17/00 (2006.01); H01F 17/04 (2006.01); H01F 27/255 (2006.01); H01F 27/29 (2006.01); H01F 27/32 (2006.01)
CPC H01F 27/255 (2013.01) [H01F 17/0013 (2013.01); H01F 27/292 (2013.01); H01F 27/324 (2013.01); H01F 2017/0066 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A coil component comprising:
a base body containing a plurality of metal magnetic particles; and
a coil conductor provided in the base body so as to contact with the base body and wound around a coil axis,
wherein the base body has an insulating portion, the insulating portion is disposed so as to surround at least a part of the coil conductor, the insulating portion including a non-metal magnetic particle region defined by at least three of the plurality of metal magnetic particles in a sectional surface of the base body, and
wherein at a geometric center of the non-metal magnetic particle region in a sectional surface thereof along the coil axis, an atomic percent of Si is highest among those of the materials constituting the non-metal magnetic particle region other than oxygen.