US 11,869,702 B2
Coil component, circuit board, and electronic device
Hidenori Aoki, Tokyo (JP); and Tomoo Kashiwa, Tokyo (JP)
Assigned to TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed by TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed on Dec. 7, 2022, as Appl. No. 18/076,983.
Application 18/076,983 is a continuation of application No. 17/129,142, filed on Dec. 21, 2020, granted, now 11,551,853.
Claims priority of application No. 2019-239125 (JP), filed on Dec. 27, 2019.
Prior Publication US 2023/0109335 A1, Apr. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H05K 1/18 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01)
CPC H01F 27/2804 (2013.01) [H01F 27/29 (2013.01); H05K 1/181 (2013.01); H01F 2027/2809 (2013.01); H05K 2201/1003 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A coil component comprising:
a base body containing a plurality of metal magnetic particles and a binder binding together the metal magnetic particles, the base body having a first surface extending along a coil axis and a second surface opposing the first surface, the coil axis extending perpendicular to a mounting substrate on which the coil component is to be mounted;
a first external electrode provided on the base body;
a second external electrode provided on the base body; and
a coil conductor electrically connected to the first and second external electrodes, the coil conductor extending around the coil axis,
wherein the coil conductor has a winding portion, the winding portion has a plurality of first conductor portions opposing the first surface and one or more second conductor portions opposing the second surface and smaller in number than the first conductor portions, and the first and second conductor portions alternate with and are connected to each other, and
wherein a first distance between the plurality of first conductor portions and the first surface is less than a second distance between the one or more second conductor portions and the second surface, and
wherein a ratio of the first distance to the second distance is from 0.5 to less than 1.