US 12,119,164 B2
Coil component and method for manufacturing coil component
Masayoshi Nakamura, Nagaokakyo (JP); Yuki Kanbe, Nagaokakyo (JP); Akio Miyazaki, Nagaokakyo (JP); and Kazuhiko Chiba, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Jul. 16, 2021, as Appl. No. 17/378,335.
Claims priority of application No. 2020-130354 (JP), filed on Jul. 31, 2020.
Prior Publication US 2022/0037081 A1, Feb. 3, 2022
Int. Cl. H01F 27/29 (2006.01); H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 41/02 (2006.01); H01F 41/04 (2006.01)
CPC H01F 27/29 (2013.01) [H01F 27/24 (2013.01); H01F 27/2823 (2013.01); H01F 41/0206 (2013.01); H01F 41/04 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A coil component comprising:
a drum-shaped core including a core portion that extends in a length direction of the coil component and a first flange portion provided on a first end portion of the core portion in the length direction;
a first wire and a second wire which each have a first end and a second end, the first wire and the second wire being wound around the core portion;
a first terminal electrode that is provided on the first flange portion and to which the first end of the first wire is connected; and
a second terminal electrode that is provided on the first flange portion and to which the first end of the second wire is connected,
wherein
the first flange portion includes
an inner surface that faces toward the core portion,
an end surface that faces away from the inner surface,
a bottom surface and a top surface that face away from each other in a height direction that is orthogonal to the length direction,
a pair of side surfaces that face away from each other in a width direction that is orthogonal to the length direction and the height direction,
a first main portion provided on the first end portion of the core portion,
a first leg portion and a second leg portion that project from the first main portion in the height direction, and
a main-portion bottom surface of the first main portion that faces toward the bottom surface, and a pair of inside surfaces of the first leg portion and the second leg portion that face each other,
wherein the first main portion, the first leg portion, and the second leg portion surround and define a first crotch portion when viewed from the end surface, and the bottom surface includes a first bottom surface of the first leg portion and a second bottom surface of the second leg portion,
the first terminal electrode and the second terminal electrode each include a base electrode on a surface of the first flange portion and a plating layer that covers the base electrode,
the base electrode includes a bottom-surface base electrode portion on the bottom surface, an end-surface base electrode portion on the end surface, and a side-surface base electrode portion on each of the side surfaces,
the end-surface base electrode portion has a height greater than a height of the first crotch portion, and
heights of the side-surface base electrode portion at both edges of the side-surface base electrode portion are less than the height of the first crotch portion.