US 12,249,453 B2
Multilayer coil component
Yusuke Nagai, Tokyo (JP); Kazuhiro Ebina, Tokyo (JP); Kouichi Kakuda, Tokyo (JP); Kunihiko Kawasaki, Tokyo (JP); Shinichi Kondo, Tokyo (JP); Yuya Ishima, Tokyo (JP); Masaki Takahashi, Tokyo (JP); Takahiro Sato, Tokyo (JP); Keito Yasuda, Tokyo (JP); and Shingo Hattori, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Nov. 10, 2021, as Appl. No. 17/523,202.
Claims priority of application No. 2020-204267 (JP), filed on Dec. 9, 2020.
Prior Publication US 2022/0181073 A1, Jun. 9, 2022
Int. Cl. H01F 5/00 (2006.01); H01F 17/00 (2006.01); H01F 17/04 (2006.01); H01F 27/29 (2006.01)
CPC H01F 27/292 (2013.01) [H01F 17/0013 (2013.01); H01F 17/04 (2013.01); H01F 2017/048 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A multilayer coil component comprising:
an element body formed by laminating magnetic body layers 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
the coil is configured by electrically connecting coil conductors respectively provided in the magnetic body layers constituting the element body,
the metal magnetic particles have a normal particle having an ellipsoidal shape and flat particles having an ellipsoidal shape flatter in a thickness direction than the normal particle,
a plurality of the normal particles and at least one of the flat particles disposed such that a surface including a major axis direction orthogonal to the thickness direction and a minor axis direction is along a forming surface of the coil conductor in the magnetic body layer are arranged in a lamination direction of the magnetic body layers between the coil conductors, and
the flat particle is disposed so as to straddle the plurality of normal particles in the major axis direction.