公开(公告)号：US20210065954A1

公开(公告)日：2021-03-04

申请号：US17000963

申请日：2020-08-24

Applicant: TDK CORPORATION

Inventor： Yoshihiro KAWASAKI ,  Masato OTSUKA ,  Taishi KITAMURA

IPC: H01F17/04 ,  H01F27/28 ,  H01F27/29

Abstract: A coil device has a core including a winding core portion and a flange portion formed on an X-axis-direction end portion of the winding core portion, a coil portion formed by wires being wound around the winding core portion, and terminal electrodes provided on the flange portion. Leadout portions of the wires are respectively connected to the terminal electrodes. A main protuberance having a protuberating shape is formed on an upper surface of the flange portion. The first and second leadout portions of the wires are connected to the first and second terminal electrodes outside the main protuberance in the X-axis direction.

公开(公告)号：US20210233702A1

公开(公告)日：2021-07-29

申请号：US17159398

申请日：2021-01-27

Applicant: TDK Corporation

Inventor： Masato OTSUKA ,  Kouyu OHI ,  Yusuke KIMOTO ,  Setu TSUCHIDA

IPC: H01F27/28 ,  H01F27/24 ,  H01F27/29 ,  H05K1/18 ,  H05K1/11

Abstract: Disclosed herein is a coil component that includes a core, first to fourth terminal electrodes provided on a first flange part, fifth to eighth terminal electrodes provided on a second flange part, first and second wires bifilar wound around a winding core part, and third and fourth wires bifilar wound around the winding core part. One and other ends of the first to eighth wires are connected corresponding one of the first to eighth terminal electrodes. The first and second wires cross each other in a first crossing area. The third and fourth wires cross each other in a second crossing area different from the first crossing area.

公开(公告)号：US20190131056A1

公开(公告)日：2019-05-02

申请号：US16170349

申请日：2018-10-25

Applicant: TDK Corporation

Inventor： Syun ASHIZAWA ,  Masato OTSUKA ,  Hanako YOSHINO ,  Toshio TOMONARI ,  Kohei WADA

IPC: H01F27/28

Abstract: Disclosed herein is a coil component that includes an insulating substrate, a first coil part formed on the first surface of the insulating substrate, and a second coil part formed on the second surface of the insulating substrate. At least an innermost turn of the first coil part is radially separated by spiral-shaped slits into three or more conductor parts. At least an innermost turn of the second coil part is radially separated by spiral-shaped slits into three or more conductor parts. Inner peripheral ends of respective innermost to outermost conductor parts of the three or more conductor parts of the first coil part are connected to inner peripheral ends of the respective outermost to innermost conductor parts of the three or more conductor parts of the second coil part.

公开(公告)号：US20200251276A1

公开(公告)日：2020-08-06

申请号：US16782148

申请日：2020-02-05

Applicant: TDK CORPORATION

Inventor： Munehito NISHIMURA ,  Yoshihiro KAWASAKI ,  Masato OTSUKA ,  Taishi KITAMURA

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

Abstract: A coil device includes a core including a winding core portion and a flange portion provided in an end portion of the winding core portion in an X-axis direction, a coil portion formed by a first wire and a second wire being wound around the winding core portion, and a first terminal electrode formed on one end side of the flange portion in a Y-axis direction, a first lead portion of the first wire being connected to the first terminal electrode, and a second terminal electrode formed on the other end side of the flange portion in the Y-axis direction, a second lead portion of the second wire being connected to the second terminal electrode. The width of the flange portion along X-axis-direction is different between one end and the other end of the flange portion in the Y-axis-direction.