US 12,080,471 B2
Coil component
Junichiro Urabe, Tokyo (JP); Hajime Kato, Tokyo (JP); Yuto Shiga, Tokyo (JP); Kazuya Tobita, Tokyo (JP); Youichi Kazuta, Tokyo (JP); Noriaki Hamachi, Tokyo (JP); Toshinori Matsuura, Tokyo (JP); Yuichi Takubo, Tokyo (JP); Asami Takahashi, Tokyo (JP); and Munehiro Takaku, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Feb. 3, 2021, as Appl. No. 17/166,153.
Claims priority of application No. 2020-020114 (JP), filed on Feb. 7, 2020.
Prior Publication US 2021/0249183 A1, Aug. 12, 2021
Int. Cl. H01F 27/29 (2006.01); H01F 17/00 (2006.01); H01F 27/28 (2006.01)
CPC H01F 27/292 (2013.01) [H01F 17/0006 (2013.01); H01F 27/2847 (2013.01); H01F 2017/0073 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A coil component comprising:
an element body including a pair of end surfaces facing each other, a pair of main surfaces facing each other, and a pair of side surfaces facing each other;
a coil disposed in the element body, having a coil axis extending along a facing direction of the pair of side surfaces, and including a plurality of turns having a constant width; and
a first external electrode to which one end of the coil is connected and a second external electrode to which the other end of the coil is connected, wherein
each of the first external electrode and the second external electrode is disposed on at least one of the main surfaces and the first external electrode and the second external electrode are separated from each other in a facing direction of the pair of end surfaces,
an end portion of a first outermost turn as the turn closest to one of the side surfaces in the facing direction of the pair of side surfaces is connected to the first external electrode and an end portion of a second outermost turn as the turn closest to the other side surface in the facing direction of the pair of side surfaces is connected to the second external electrode, the end portion of the first outermost turn having a first point closest to the one of the side surfaces in the facing direction of the pair of side surfaces, the end portion of the second outermost turn having a second point closest to the other side surface in the facing direction of the pair of side surfaces, an imaginary line extending in the facing direction of the pair of main surfaces and passing through the first point being a first line, an imaginary line extending in the facing direction of the pair of main surfaces and passing through the second point being a second line, and
when viewed from the facing direction of the pair of side surfaces,
between the first line and the one of the side surfaces in the facing direction of the pair of side surfaces, an area of a region where the first outermost turn and the second external electrode face each other is larger than an area of a region where the turns other than the first outermost turn and the second outermost turn and the second external electrode face each other, and
between the second line and the other side surface in the facing direction of the pair of side surfaces, an area of a region where the second outermost turn and the first external electrode face each other is larger than an area of a region where the turns other than the first outermost turn and the second outermost turn and the first external electrode face each other.