US 12,354,785 B2
Multilayer coil component
Yusuke Nagai, Tokyo (JP); Takashi Suzuki, Tokyo (JP); Kazuhiro Ebina, Tokyo (JP); Kunihiko Kawasaki, Tokyo (JP); Shinichi Kondo, Tokyo (JP); Yuya Ishima, Tokyo (JP); Shinichi Sato, Tokyo (JP); Seiichi Nakagawa, Tokyo (JP); Keito Yasuda, Tokyo (JP); and Ryuichi Wada, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Sep. 30, 2021, as Appl. No. 17/490,411.
Claims priority of application No. 2020-167760 (JP), filed on Oct. 2, 2020.
Prior Publication US 2022/0108835 A1, Apr. 7, 2022
Int. Cl. H01F 27/28 (2006.01); H01F 1/28 (2006.01); H01F 27/29 (2006.01)
CPC H01F 27/292 (2013.01) [H01F 1/28 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A multilayer coil component comprising:
an element body containing a plurality of metal magnetic particles;
a coil disposed in the element body; and
an external electrode disposed on a surface of the element body and electrically connected to the coil, wherein
at least a part of a space between the metal magnetic particles in the element body is filled with a first resin,
the external electrode has a resin electrode containing a second resin and a conductor powder dispersed inside of the second resin,
the second resin connected from the resin electrode penetrates inside of the element body,
the external electrode has a base baking electrode between the resin electrode and the element body, and
the second resin wraps around the base baking electrode so as to extend into the element body and further extends to a part where the element body and the base baking electrode are in contact with each other in the element body.