公开(公告)号：US20200279678A1

公开(公告)日：2020-09-03

申请号：US16800311

申请日：2020-02-25

Applicant: TDK CORPORATION

Inventor： Kazuhiro Yoshidome ,  Hiroyuki Matsumoto ,  Hitoshi Ohkubo ,  Atsuyuki Nakano

IPC: H01F1/147 ,  H01F27/255 ,  H01F27/28

Abstract: A coil component having high inductance while suppressing core loss is obtained. The coil component includes a coil and a magnetic core. The magnetic core has a laminated body in which soft magnetic layers are laminated. The thickness of each of the soft magnetic layers is 10 μm or more and 30 μm or less. A structure made of Fe-based nano-crystals is observed in the soft magnetic layers.

公开(公告)号：US11682507B2

公开(公告)日：2023-06-20

申请号：US16800299

申请日：2020-02-25

Applicant: TDK CORPORATION

Inventor： Kazuhiro Yoshidome ,  Hiroyuki Matsumoto ,  Hitoshi Ohkubo ,  Atsuyuki Nakano

IPC: H01F1/147 ,  H01F27/245 ,  C22C38/02 ,  C22C38/00 ,  C22C38/12 ,  H01F1/153 ,  H01F27/25

CPC classification number: H01F1/147 ,  C22C38/002 ,  C22C38/02 ,  C22C38/12 ,  H01F1/15333 ,  H01F27/245 ,  H01F27/25 ,  C22C2202/02

Abstract: A coil component having high inductance while suppressing core loss is obtained. The coil component includes a coil and a magnetic core. The magnetic core has a laminated body in which soft magnetic layers are laminated. Micro gaps are formed in the soft magnetic layers. The soft magnetic layers are divided into at least two or more small pieces by the micro gaps. A structure made of Fe-based nano-crystals is observed in the soft magnetic layers.

公开(公告)号：US11367556B2

公开(公告)日：2022-06-21

申请号：US16294381

申请日：2019-03-06

Applicant: TDK CORPORATION

Inventor： Toru Tonogai ,  Atsuyuki Nakano ,  Terumasa Toyoda ,  Yuichi Oyanagi

IPC: H01F27/24 ,  H01F27/29 ,  H01F27/28

Abstract: An inductor has a coil portion made of a wire wound in a coil shape and an element body in which the coil portion is provided. The element body has a first core member, a second core member, and a third core member. The first core member has a winding core portion configured to be positioned inside the coil portion. The second core member is accommodated in the winding core portion. The third core member covers the coil portion and the first core member in which the second core member is accommodated in the winding core portion.