Coil component and circuit board having the same

    公开(公告)号:US10123422B2

    公开(公告)日:2018-11-06

    申请号:US15803818

    申请日:2017-11-05

    申请人: TDK Corporation

    摘要: Disclosed herein is a coil component that includes a drum-shaped core having a first flange part provided at one end of a winding core part, first to fourth terminal electrodes formed on the first flange part so as to be arranged in this order in a second direction, and first to fourth wires wound around the winding core part. One ends of the first to fourth wires are connected to different ones of the first to fourth terminal electrodes. The first and second terminal electrodes are not symmetrical with the third and fourth terminal electrodes so that the third and fourth terminal electrodes are offset outward compared with the first and second terminal electrodes.

    COIL COMPONENT
    22.
    发明申请
    COIL COMPONENT 审中-公开

    公开(公告)号:US20180158595A1

    公开(公告)日:2018-06-07

    申请号:US15870427

    申请日:2018-01-12

    申请人: TDK Corporation

    IPC分类号: H01F27/30 H01F27/26 H01F19/08

    摘要: A coil component includes a first core, a second core, a lead wire, an outside mark, and an inside mark. The first core includes a winding portion and a pair of core ends. The second core connects a pair of the core ends and includes an inside surface and an outside surface. The lead wire is wound around the winding portion. The outside mark is formed on the outside surface of the second core and designed to change its arrangement at the time of rotating the second core by 90 degrees in a rotational direction whose central axis is along a normal direction of the outside surface. The inside mark with undulation is formed on the inside surface of the second core and designed to change its arrangement at the time of rotating the second core by 90 degrees in the rotational direction.

    Pulse transformer
    23.
    发明授权
    Pulse transformer 有权
    脉冲变压器

    公开(公告)号:US09312061B2

    公开(公告)日:2016-04-12

    申请号:US14492669

    申请日:2014-09-22

    申请人: TDK Corporation

    摘要: Disclosed herein is a pulse transformer that includes a drum core having a winding core portion and first and second flange portions, a plate core connected to the first and second flange portions, and a plurality of wires that are wound around the winding core portion. The first and second flange portions and the plate core are ground such that an inductance of the pulse transformer is 350 μH or more when a bias current of 8 mA is applied to the wires.

    摘要翻译: 本文公开了一种脉冲变压器,其包括具有卷绕芯部分和第一和第二凸缘部分的鼓芯,连接到第一和第二凸缘部分的板芯和缠绕在卷芯部分上的多根线。 第一和第二凸缘部分和板芯被研磨,使得当对电线施加8mA的偏置电流时,脉冲变压器的电感为350μH或更大。

    Coil device
    24.
    发明授权

    公开(公告)号:US11935679B2

    公开(公告)日:2024-03-19

    申请号:US17487057

    申请日:2021-09-28

    申请人: TDK CORPORATION

    摘要: A coil device includes: a core including a winding core part and a flange part at an axial end part of the winding core part, a coil part including a first wire and a second wire wound around the winding core part, a first terminal electrode, formed on a flange part mounting surface and a lead-out part of the first wire is connected, and a second terminal electrode, formed on the mounting surface of the flange part spaced apart from the first terminal electrode and a lead-out part of the second wire is connected, in which the flange part includes a concave part, recessed from the upper surface of the flange part and from an outer end surface of the flange part in order to have bottoms. The coil device is easy to connect a wire and has excellent bonding strength even when the connecting part becomes the mounting surface.

    Coil component
    25.
    发明授权

    公开(公告)号:US11456113B2

    公开(公告)日:2022-09-27

    申请号:US16379033

    申请日:2019-04-09

    申请人: TDK CORPORATION

    IPC分类号: H01F17/04 H01F27/29 H01F27/28

    摘要: Disclosed herein is a coil component that includes: a core including a winding core part extending in a first direction and a flange part provided at one end of the winding core part in the first direction, the flange part having a first surface substantially parallel with the first direction; a plate-like member fixed to the first surface of flange part; and a wire wound around the winding core part. The first surface of flange part has a cut part greater in size than a diameter of the wire.

    Coil component
    26.
    发明授权

    公开(公告)号:US10319512B2

    公开(公告)日:2019-06-11

    申请号:US15401504

    申请日:2017-01-09

    申请人: TDK Corporation

    摘要: Disclosed herein is a coil component that includes a drum-shaped core having a winding part, first and second terminal electrodes provided on the first flange part of the drum-shaped core, third and fourth terminal electrodes provided on the second flange part of the drum-shaped core, a first coil wound around the winding core part connected between the first and third terminal electrodes, and a second coil wound around the winding core part connected between the second and fourth terminal electrodes. The first and second coils cross each other at the first drawing part positioned between the winding part and the first flange part. The first coil is constituted by two or more wires.

    Pulse transformer
    27.
    发明授权

    公开(公告)号:US10229780B2

    公开(公告)日:2019-03-12

    申请号:US14224556

    申请日:2014-03-25

    申请人: TDK CORPORATION

    摘要: A pulse transformer is provided with a drum core including a winding core and first and second flanges, and wires wound around the winding core. First terminal electrodes and a second center tap are provided on the first flange, and second terminal electrodes and a first center tap are provided on the second flange. Each end of the wires is connected to a corresponding one of the first terminal electrodes, the second center tap, the second terminal electrodes, and the first center tap. A length of the drum core in the X direction is equal to a length of the drum core in the Y direction, so that the shape of the mounting region on the printed circuit board is not changed even after being rotated by 90°.

    Coil component and terminal component used therein

    公开(公告)号:US10186368B2

    公开(公告)日:2019-01-22

    申请号:US15356928

    申请日:2016-11-21

    申请人: TDK CORPORATION

    摘要: Disclosed herein is a coil component that includes a base, a metal wire that is wound around the base and contains copper, and a terminal electrode that is provided on the base and contains nickel and tin. The terminal electrode includes a wire connection area to which an end portion of the metal wire is connected and which contains a CuNi alloy or a CuNiSn alloy, and a mounting area which is different from the wire connection area. The wire connection area includes a portion that contains a small amount of tin than the mounting area.

    Coil device
    30.
    发明授权

    公开(公告)号:US09978507B2

    公开(公告)日:2018-05-22

    申请号:US15422156

    申请日:2017-02-01

    申请人: TDK CORPORATION

    摘要: A coil device comprising a winding coil including Cu and having a winding part and an extension line part which is pulled out from said winding part, a pair of electrodes made of a conductive material having a base part provided with a mounting base face at one of the face, and a connecting wire part having a connecting wire face connected with the extension line part and said connecting wire part projects out towards an opposite side of said mounting base face with respect to the base part, a magnetic part including a magnetic material and said magnetic part uncovering said mounting base and covering at least said winding part and said connecting wire face, wherein Sn amount per unit area of said connecting wire face is less than Sn amount per unit area of said mounting base.