US 12,125,627 B2
Multilayer inductor component
Daiki Kato, Tokyo (JP); Masashi Shimoyasu, Tokyo (JP); Yoji Tozawa, Tokyo (JP); Seiichi Nakagawa, Tokyo (JP); Akihiko Oide, Tokyo (JP); Makoto Yoshino, Tokyo (JP); and Kazuhiro Ebina, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Jun. 3, 2021, as Appl. No. 17/337,985.
Claims priority of application No. 2020-098412 (JP), filed on Jun. 5, 2020.
Prior Publication US 2021/0383960 A1, Dec. 9, 2021
Int. Cl. H01F 27/28 (2006.01); H01F 27/29 (2006.01); H01F 41/04 (2006.01)
CPC H01F 27/2804 (2013.01) [H01F 27/29 (2013.01); H01F 41/041 (2013.01); H01F 2027/2809 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A multilayer inductor component comprising:
an element body having a rectangular parallelepiped shape and including a pair of end surfaces opposed to each other in a first direction; a first main surface constituting a mounting surface; a second main surface opposed to the first main surface in a second direction orthogonal to the first direction; and a pair of side surfaces opposed to each other in a third direction orthogonal to the first direction and the second direction;
an internal conductor disposed in the element body; and
an external electrode including a sintered metal layer which is disposed on an end surface of the pair of end surfaces, the pair of side surfaces, the first main surface, and the second main surface and electrically connected to the internal conductor, wherein
the element body includes four ridge portions disposed between each of the pair of side surfaces and each of the first main surface and the second main surface,
an edge of the sintered metal layer is continuous over the pair of side surfaces, the first main surface, the second main surface, and the ridge portions,
an electrode length, which is a length in the first direction from the edge of the sintered metal layer to a reference plane including the end surface, at a central portion of the first main surface in the third direction, is shorter than the electrode length at each of the ridge portions located on both sides of the first main surface in the third direction, and
the electrode length at a central portion of each of the pair of side surfaces in the second direction is equal to or less than the electrode length at each of the ridge portions located on both sides of each of the pair of side surfaces in the second direction.