公开(公告)号：US20230170117A1

公开(公告)日：2023-06-01

申请号：US17992292

申请日：2022-11-22

Applicant: TDK CORPORATION

Inventor： Yuya OSHIMA ,  Kenji KOMORITA ,  Takehiro ISHII ,  Kouichi KAKUDA ,  Shigeshi OSAWA ,  Yusaku ABE ,  Tsubasa OZAWA ,  Midori KISHIMOTO ,  Makoto YOSHINO ,  Koki ITO ,  Masato KUDOU

IPC: H01F5/00 ,  H01F5/04

CPC classification number: H01F5/003 ,  H01F5/04

Abstract: In a multilayer coil component, a plurality of coil conductors are stacked in a coil axis direction. A connecting conductor connects the coil conductors adjacent to each other in the coil axis direction. First, second, and third coil conductors are arranged in order in the coil axis direction. A main body portion extends in a circumferential direction of the coil axis. Pad portions are connected to the main body portion, are connected to the first coil conductor via the connecting conductor, overhang from the third coil conductor in a direction away from the coil axis when viewed from the coil axis direction, and are inclined with respect to a virtual plane orthogonal to the coil axis direction.

公开(公告)号：US20220310316A1

公开(公告)日：2022-09-29

申请号：US17705969

申请日：2022-03-28

Applicant: TDK CORPORATION

Inventor： Yuya OSHIMA ,  Kenji KOMORITA ,  Masayuki SUZUKI ,  Yuudai KATOU ,  Takeru SASAKI ,  Shigeshi OSAWA ,  Takehiro ISHII ,  Kouichi KAKUDA ,  Yukio TAKAHASHI ,  Tsubasa OZAWA ,  Makoto YOSHINO

IPC: H01F27/29 ,  H01F17/00

Abstract: In the multi-layer coil component, the hole portion is provided in the vicinity of the side surface of the element body, and the distance from the tip position of the external electrode to the hole portion is shorter than the distance from the tip position of the external electrode to the coil. Therefore, when a crack is generated starting from the tip position of the external electrode on the mounting surface, the crack progress toward the hole portion located at a distance closer than the coil. Therefore, in the multi-layer coil component, splitting of the coil due to the crack can be prevented.

公开(公告)号：US20220306541A1

公开(公告)日：2022-09-29

申请号：US17699972

申请日：2022-03-21

Applicant: TDK CORPORATION

Inventor： Kouichi KAKUDA ,  Takashi SUZUKI ,  Yukio TAKAHASHI ,  Kunihiko KAWASAKI ,  Hiroyuki TANOUE ,  Takehiro ISHII ,  Takuya NIIBORI ,  Takahiro SATO ,  Akihiko OIDE ,  Yasuhiro ITO ,  Takashi ENDO ,  Kunio ODA

IPC: C04B35/26

Abstract: A ferrite composition comprises a main component and a subcomponent. The main component includes 32.0 to 46.4 mol % of iron oxide in terms of Fe2O3, 4.4 to 14.0 mol % of copper oxide in terms of CuO, and 8.4 to 56.9 mol % of zinc oxide in terms of ZnO. The subcomponent includes 0.53 to 11.00 parts by weight of a silicon compound in terms of SiO2, 0.1 to 12.8 parts by weight of a tin compound in terms of SnO2, and 0.5 to 7.0 parts by weight of a bismuth compound in terms of Bi2O3, with respect to 100 parts by weight of the main component.