US 12,347,607 B2
Multi-layer coil component
Yuya Oshima, Tokyo (JP); Kenji Komorita, Tokyo (JP); Masayuki Suzuki, Yurihonjo (JP); Yuudai Katou, Yurihonjo (JP); Takeru Sasaki, Tokyo (JP); Shigeshi Osawa, Yurihonjo (JP); Takehiro Ishii, Tokyo (JP); Kouichi Kakuda, Tokyo (JP); Yukio Takahashi, Tokyo (JP); Tsubasa Ozawa, Tokyo (JP); and Makoto Yoshino, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Mar. 28, 2022, as Appl. No. 17/705,969.
Claims priority of application No. 2021-054929 (JP), filed on Mar. 29, 2021.
Prior Publication US 2022/0310316 A1, Sep. 29, 2022
Int. Cl. H01F 27/29 (2006.01); H01F 17/00 (2006.01)
CPC H01F 27/292 (2013.01) [H01F 17/0013 (2013.01); H01F 2017/002 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A multi-layer coil component comprising:
an element body including a plurality of layers stacked and having a mounting surface parallel to a stacking direction of the plurality of layers and a pair of end surfaces facing each other in a first direction parallel to the stacking direction of the plurality of layers;
a coil provided in the element body and having a coil axis parallel to the first direction;
a pair of external electrodes continuously extending from each of the end surfaces to the mounting surface of the element body;
a pair of lead conductors penetrating through a plurality of layers of the element body located between the coil and the end surface, the pair of lead conductors being electrically connected to end portions of the coil, the pair of lead conductors being exposed from the end surfaces of the element body and connected to the external electrodes; and
a fragile portion provided in the plurality of layers through which the lead conductor penetrates, and extending in a row in parallel with the first direction,
wherein, in a cross section orthogonal to the mounting surface and parallel to the coil axis, a distance from a tip position of the external electrode on the mounting surface to the fragile portion is shorter than a distance from the tip position of the external electrode on the mounting surface to the coil.