公开(公告)号：US20240321503A1

公开(公告)日：2024-09-26

申请号：US18599609

申请日：2024-03-08

Applicant: TDK CORPORATION

Inventor： Masashi Shimoyasu ,  Takahiro Yata ,  Masataka Yamamoto ,  Hiroyuki Abe ,  Daiki Saito ,  Akihiko Oide

IPC: H01F27/23 ,  H01F17/00 ,  H01F17/02

CPC classification number: H01F27/23 ,  H01F17/0013 ,  H01F17/02 ,  H01F2017/002

Abstract: An inductor includes: an element body having a pair of end surfaces facing each other, and a side surface extending in a facing direction of the pair of end surfaces to connect the pair of end surfaces; and a through conductor disposed inside the element body and extending in the facing direction. The element body includes a first portion surrounding the through conductor, and a second portion positioned outward of the first portion, when viewed in the facing direction. The first portion is disposed spaced from the side surface. The first portion has a porosity higher than a porosity of the second portion.

公开(公告)号：US20240312687A1

公开(公告)日：2024-09-19

申请号：US18599410

申请日：2024-03-08

Applicant: TDK CORPORATION

Inventor： Takahiro Yata ,  Masashi Shimoyasu ,  Masataka Yamamoto ,  Hiroyuki Abe ,  Daiki Saito ,  Akihiko Oide

IPC: H01F17/00 ,  H01F17/04

CPC classification number: H01F17/0013 ,  H01F17/04 ,  H01F2017/0073

Abstract: A multilayer inductor includes: an element body having a pair of end surfaces facing each other, and a side surface extending in a facing direction of the pair of end surfaces in such a way as to connect the pair of end surfaces; and a through conductor disposed inside the element body and extending in the facing direction. The element body includes a first portion surrounding the through conductor and a second portion positioned outward of the first portion, when viewed in the facing direction. The first portion is disposed spaced from the side surface. The first portion and the second portion have different magnetic permeabilities from each other.

公开(公告)号：US10784834B2

公开(公告)日：2020-09-22

申请号：US16334991

申请日：2017-08-21

Applicant: TDK CORPORATION

Inventor： Akihiko Oide ,  Naoki Uchida ,  Yoji Tozawa ,  Makoto Yoshino ,  Seiichi Nakagawa ,  Shinichi Sato ,  Hiroshi Ono ,  Takashi Endo

IPC: H03H7/01 ,  H03H1/00 ,  H03H7/075 ,  H01F17/00 ,  H01F27/00

Abstract: A multilayer LC filter array includes an element body of a rectangular parallelepiped shape, a first filter including a first inductor and a first capacitor, a second filter including a second inductor and a second capacitor, a first input terminal electrode and a first output terminal electrode that are connected to the first inductor, a second input terminal electrode and a second output terminal electrode that are connected to the second inductor, and a ground terminal electrode that is connected to the first capacitor and the second capacitor. The element body includes a principal surface. The ground terminal electrode is disposed at a center of the principal surface. The first input terminal electrode, the first output terminal electrode, the second input terminal electrode, and the second output terminal electrode are disposed at respective different corner portions of the element body when viewed from a direction orthogonal to the principal surface.