US 12,283,414 B2
Coil component
Ryota Hashimoto, Nagaokakyo (JP); Shigeto Yamamoto, Nagaokakyo (JP); and Hiroyuki Honda, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Dec. 9, 2021, as Appl. No. 17/546,875.
Claims priority of application No. 2020-204653 (JP), filed on Dec. 10, 2020.
Prior Publication US 2022/0189684 A1, Jun. 16, 2022
Int. Cl. H01F 17/04 (2006.01); H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01)
CPC H01F 27/292 (2013.01) [H01F 27/24 (2013.01); H01F 27/2823 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A coil component comprising:
a core which includes a winding core portion extending in an axial direction, and a first flange portion and a second flange portion respectively provided at a first end and a second end of the winding core portion opposite to each other in the axial direction;
a first terminal electrode on the first flange portion;
a second terminal electrode on the second flange portion; and
a first wire wound around the winding core portion,
the first wire having a first terminal connected to the first terminal electrode and a second terminal connected to the second terminal electrode,
the first flange portion having a first bottom surface facing a mounting surface side,
the second flange portion having a second bottom surface facing the mounting surface side,
the first terminal electrode having a first main surface extending along the first bottom surface,
the second terminal electrode having a second main surface extending along the second bottom surface,
the first terminal extending along the first main surface while at least a part of the first terminal is disposed in the first terminal electrode and having a first top surface which is located on a side opposite to the first bottom surface of the first flange portion,
an outer surface of the first terminal electrode defining a first fillet surface which rises from the first main surface of the first terminal electrode toward the first top surface of the first terminal and which defines a concave curved surface,
the first terminal electrode including a first layer and a second layer on the first layer, the first terminal is on a top surface of the first layer, at least part of the first terminal is in the second layer, and when viewed on a plane orthogonal to an extending direction of the first terminal, an entirety of the first fillet surface is separated from the top surface of the first layer in a direction orthogonal to the first bottom surface, and
when viewed on the plane orthogonal to the extending direction of the first terminal, an entirety of the first fillet surface is further away from the first bottom surface than is a center of the first terminal in the direction orthogonal to the first bottom surface.