公开(公告)号：US20190080834A1

公开(公告)日：2019-03-14

申请号：US16122090

申请日：2018-09-05

Applicant: TDK CORPORATION

Inventor： Shuhei SOMEYA ,  Tasuku MIKOGAMI

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

Abstract: A coil device includes a coil, a core, and an electrode. The coil is formed by winding a wire. The core is provided with the coil. The electrode has a wire joint part configured to be connected with a wire end of the wire. A mount surface of the electrode is at least partially covered with a cover layer.

公开(公告)号：US20230093320A1

公开(公告)日：2023-03-23

申请号：US18071098

申请日：2022-11-29

Applicant: TDK CORPORATION

Inventor： Kouyu OHI ,  Tasuku MIKOGAMI ,  Shuhei SOMEYA ,  Yusuke KIMOTO

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

Abstract: To provide a coil device having high bonding strength and bonding reliability.
The coil device 1 has a core member 10 having a winding core and a flange 12, a wire 32 wound around the winding core, and a terminal electrode 52 connected with a lead 32a of a wire 32 provided to the flange 12; and an easy bonding layer 70 is formed on the surface of the terminal electrode 52 connected with the lead 32a in a stripe form 70a. the stripe form each bonding layer 70a is formed as a laser mark 71. In the coil device 1, a residue of coating film 78 which may be generated when the lead 32a of the wire 32 is connected to the mounting part 65 of the terminal electrode 52 is removed by laser.

公开(公告)号：US20210166862A1

公开(公告)日：2021-06-03

申请号：US17079669

申请日：2020-10-26

Applicant: TDK CORPORATION

Inventor： Shuhei SOMEYA ,  Aoi TOKIWA ,  Daisuke URABE

IPC: H01F27/28 ,  H01F27/24 ,  H01F27/06 ,  H01F41/069

Abstract: A coil device includes a winding core, a flange, and a terminal fitting. The winding core is wound by a wire. The flange is formed at an end of the winding core in its axial direction. The terminal fitting is attached to the flange. The terminal fitting includes an engagement part engaged with a circumferential wall part of the flange.

公开(公告)号：US20190385786A1

公开(公告)日：2019-12-19

申请号：US16444747

申请日：2019-06-18

Applicant: TDK CORPORATION

Inventor： Shuhei SOMEYA ,  Kouyu Ohi ,  Tasuku Mikogami

IPC: H01F27/34 ,  H01F27/28 ,  H01F27/29 ,  H01F27/24

Abstract: Disclosed herein is a coil component that includes: a first magnetic core extending in the first direction and around which the wires are wound; a second magnetic core having a first wall surface part covering the first magnetic core from one side in the second direction, a second wall surface part covering the first magnetic core from other side in the second direction, and a third wall surface part covering the first magnetic core from one side in the third direction; first and second terminal electrodes connected respectively to one ends of the wires and arranged in the first direction along the first wall surface part; and third and fourth terminal electrodes connected respectively to other ends of the wires and arranged in the first direction along the second wall surface part.

公开(公告)号：US20210166861A1

公开(公告)日：2021-06-03

申请号：US17079658

申请日：2020-10-26

Applicant: TDK CORPORATION

Inventor： Shuhei SOMEYA ,  Aoi TOKIWA ,  Daisuke URABE

IPC: H01F27/28 ,  H01F27/24 ,  H01F41/064

Abstract: A coil device includes a winding core, a wire, and a terminal fitting. The winding core is made of a magnetic material and includes a flange. The wire is wound around the winding core. The terminal fitting is attached to a part of an outer surface of the flange. The terminal fitting includes a contact part and a protrusion plate part. The contact part is contacted with the outer surface of the flange. The protrusion plate part is formed integrally with the contact part and protrudes away from the flange. The protrusion plate part includes a wire connection surface and a main mounting surface. A lead end of the wire is connected to the wire connection surface. The main mounting surface is located opposite to the wire connection surface and is connectable to an external circuit.

公开(公告)号：US20190385783A1

公开(公告)日：2019-12-19

申请号：US16444806

申请日：2019-06-18

Applicant: TDK CORPORATION

Inventor： Shuhei SOMEYA ,  Kouyu OHI ,  Tasuku MIKOGAMI

IPC: H01F27/28 ,  H01F27/24 ,  H01F27/29 ,  H01F41/064

Abstract: Disclosed herein is a coil component that includes: a first magnetic core extending in the first direction and around which the wires are wound; a second magnetic core covering the first magnetic core from one side in a third direction; first and second terminal electrodes connected respectively to one ends of the first and second wires; and third and fourth terminal electrodes connected respectively to other ends of the first and second wires. The first and second electrodes are arranged in the first direction along the first surface of the first magnetic core, and the third and fourth terminal electrodes are arranged in the first direction along the second surface of the first magnetic core.

公开(公告)号：US20220060342A1

公开(公告)日：2022-02-24

申请号：US17399721

申请日：2021-08-11

Applicant: TDK CORPORATION

Inventor： Shuhei SOMEYA ,  Mitsuyuki Nara ,  Katsufumi Ehata ,  Shinichi Tsuchiya ,  Hirofumi Tomita ,  Yoshinobu Shimokura

IPC: H04L12/10 ,  H04L12/40 ,  H01P1/20

Abstract: Disclosed herein is a bias tee circuit connected between a common terminal and power supply and signal terminals, the bias tee circuit includes a capacitor inserted between the common terminal and the signal terminal, and first and second inductors inserted in series between the common terminal and the power supply terminal. The first inductor is connected on a side of the common terminal. The second inductor is connected on a side of the power supply terminal. The second inductor is higher in self-resonance frequency and lower in Q value than the first inductor.

公开(公告)号：US20200013541A1

公开(公告)日：2020-01-09

申请号：US16504082

申请日：2019-07-05

Applicant: TDK CORPORATION

Inventor： Tasuku MIKOGAMI ,  Shuhei SOMEYA ,  Syun ASHIZAWA ,  Setu TSUCHIDA

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

Abstract: Disclosed herein is a pulse transformer that includes first to fourth terminal electrodes provided on the first flange part, fifth to eighth terminal electrodes provided on the second flange part, first and second wires wound around the winding core part having one end connected to the first and second terminal electrodes and other end connected to the seventh and eighth terminal electrodes, and third and fourth wire wound around the winding core part having one end connected to third and fourth terminal electrodes and other end connected to the fifth and sixth terminal electrodes. A winding direction of the first and third wires is opposite to a winding direction of the second and fourth wires.

公开(公告)号：US20190333685A1

公开(公告)日：2019-10-31

申请号：US16394209

申请日：2019-04-25

Applicant: TDK CORPORATION

Inventor： Shuhei SOMEYA ,  Tasuku MIKOGAMI ,  Yuichi ANZAI ,  Hideomi TAKAHASHI

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

Abstract: Disclosed herein is a coil component that includes: a first core having a mounting surface and a coil placing surface positioned opposite to the mounting surface; a lower coil placed on the coil placing surface such that a coil axis of the lower coil extends substantially perpendicular to the coil placing surface, the lower coil having one end drawn to a first area of the mounting surface and other end drawn to a second area of the mounting surface; and an upper coil substantially coaxially stacked on the lower coil, the upper coil having one end drawn to a third area of the mounting surface and other end drawn to a fourth area of the mounting surface. The lower coil is greater in a coil diameter than the upper coil.

公开(公告)号：US20190318865A1

公开(公告)日：2019-10-17

申请号：US16378960

申请日：2019-04-09

Applicant: TDK CORPORATION

Inventor： Tasuku MIKOGAMI ,  Shuhei SOMEYA ,  Syun ASHIZAWA ,  Setu TSUCHIDA

IPC: H01F27/29 ,  H01F27/28

Abstract: Disclosed herein is a coil component that includes a core including a winding core part extending in the x-direction and a flange part, a terminal electrode provided on the flange part, and a wire wound around the winding core part and connected to the terminal electrode. The terminal electrode does not overlap the winding core part in the y-direction. The wire includes a wound part wound around the winding core part and a drawn part drawn from the wound part, running across the winding core part in the z-direction and connected to the terminal electrode. The core has a positioning part that positions the drawn part of the wire in the y-direction.