公开(公告)号：US20230005656A1

公开(公告)日：2023-01-05

申请号：US17945396

申请日：2022-09-15

Applicant: TDK CORPORATION

Inventor： Shinichi SATO ,  Yohei TADAKI ,  Akihiko OIDE ,  Yuma ISHIKAWA ,  Hidekazu SATO ,  Kazuhiro EBINA ,  Hiroyuki TANOUE

IPC: H01F27/28 ,  H01F17/00 ,  H01F27/29 ,  H01F27/32 ,  H01F41/04 ,  H01F41/12

Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.

公开(公告)号：US20150189798A1

公开(公告)日：2015-07-02

申请号：US14572100

申请日：2014-12-16

Applicant: TDK CORPORATION

Inventor： Yuma ISHIKAWA ,  Makoto YOSHINO

IPC: H05K9/00

CPC classification number: H01T4/12

Abstract: An ESD protection component includes opposite electrodes and a ground electrode. The opposite electrodes and the ground electrode each have an extraction portion and an opposite portion. The respective opposite portions of the opposite electrodes and the ground electrode are placed on the same layer. At least one of the opposite electrodes and the ground electrode, the extraction portion and the opposite portion are placed on respective different layers and, also, are electrically connected to each other via a through hole conductor.

Abstract translation: ESD保护元件包括相对电极和接地电极。 相对电极和接地电极各具有提取部分和相对部分。 相对电极和接地电极的相应的相对部分被放置在相同的层上。 相对电极和接地电极中的至少一个，提取部分和相对部分被放置在相应的不同层上，并且还通过通孔导体彼此电连接。

公开(公告)号：US20200066432A1

公开(公告)日：2020-02-27

申请号：US16540778

申请日：2019-08-14

Applicant: TDK CORPORATION

Inventor： Yuma ISHIKAWA ,  Makoto YOSHINO

IPC: H01F17/00 ,  H01F27/29 ,  H01F17/06 ,  H01F27/28

Abstract: A multilayer coil component includes an element body and a coil conductor. The element body has a non-magnetic portion and a pair of magnetic portions. One of the pair of magnetic portions includes a first magnetic region, a first non-magnetic region, a second magnetic region, and a second non-magnetic region. A sum of a first length of the non-magnetic portion in a lamination direction and a second length of the first non-magnetic region in the lamination direction is equal to or less than a third length of the first magnetic region in the lamination direction. A sum of the second length and a fourth length of the second non-magnetic region in the lamination direction is equal to or less than a fifth length of the second magnetic region in the lamination direction. The fourth length is equal to or greater than the second length.

公开(公告)号：US20170330673A1

公开(公告)日：2017-11-16

申请号：US15497314

申请日：2017-04-26

Applicant: TDK CORPORATION

Inventor： Shinichi SATO ,  Yohei TADAKI ,  Akihiko OIDE ,  Yuma ISHIKAWA ,  Hidekazu SATO

IPC: H01F27/245 ,  H01F41/04 ,  H01F27/32 ,  H01F27/29 ,  H01F27/28 ,  H01F41/12 ,  H01F27/255

CPC classification number: H01F27/245 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/022 ,  H01F27/255 ,  H01F27/2804 ,  H01F27/29 ,  H01F27/292 ,  H01F27/323 ,  H01F41/043 ,  H01F41/122

Abstract: A multilayer coil component includes an element body made of a ferrite sintered body and a coil. The coil is configured with a plurality of internal conductors juxtaposed in the element body and electrically connected to one another. An average crystal grain size in a surface region of the element body is smaller than an average crystal grain size in a region between the internal conductors in the element body. A surface of the element body is covered with a layer made of an insulating material. The insulating material is not present among the crystal grains in the surface region of the element body.

公开(公告)号：US20170309389A1

公开(公告)日：2017-10-26

申请号：US15488876

申请日：2017-04-17

Applicant: TDK CORPORATION

Inventor： Shinichi SATO ,  Yohei TADAKI ,  Akihiko OIDE ,  Yuma ISHIKAWA ,  Hidekazu SATO ,  Kazuhiro EBINA ,  Hiroyuki TANOUE

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/32 ,  H01F41/04 ,  H01F41/12

Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.

公开(公告)号：US20170092414A1

公开(公告)日：2017-03-30

申请号：US15263824

申请日：2016-09-13

Applicant: TDK CORPORATION

Inventor： Yuma ISHIKAWA ,  Takuo HATTORI ,  Makoto YOSHINO

IPC: H01F27/28 ,  H01F27/245 ,  H01F27/29

CPC classification number: H01F27/2804 ,  H01F17/0013 ,  H01F27/245 ,  H01F27/292 ,  H01F2017/0066 ,  H01F2027/2809

Abstract: A second coil opposes a first coil in a first direction. The first and second coils are positioned between a first conductor and a second conductor in the first direction. The first conductor is adjacent to the first coil in the first direction and overlaps a part of the first coil when viewed from the first direction. The second conductor is adjacent to the second coil in the first direction and overlaps a part of the second coil when viewed from the first direction. The first and second conductors are of a shape extending in a line. Inner regions of the first and second coils include regions not overlapping the first and second conductors when viewed from the first direction.

公开(公告)号：US20150036248A1

公开(公告)日：2015-02-05

申请号：US14339979

申请日：2014-07-24

Applicant: TDK CORPORATION

Inventor： Hidenobu UMEDA ,  Yuma ISHIKAWA ,  Makoto YOSHINO ,  Keigo HIGASHIDA

IPC: H02H9/04

CPC classification number: H02H9/044 ,  H01C13/02 ,  H01G4/38 ,  H01G4/40

Abstract: An ESD suppressor is configured including first and second discharge electrodes arranged as separated from each other, and a discharge inducing portion kept in contact with the first and second discharge electrodes so as to connect mutually opposed portions of the first and second discharge electrodes to each other. The discharge inducing portion contains metal particles. The first and second discharge electrodes are located on the coil side with respect to the discharge inducing portion when viewed in a stack direction of a plurality of insulator layers. An element body has a cavity portion located so as to cover the whole of the discharge inducing portion when viewed in the stack direction from the coil side. The cavity portion is in contact with the mutually opposed portions of the first and second discharge electrodes and with the discharge inducing portion.

Abstract translation: ESD抑制器被配置为包括彼此分离布置的第一和第二放电电极以及与第一和第二放电电极保持接触以便将第一和第二放电电极的相互相对的部分彼此连接的放电诱导部分 。 放电诱导部分含有金属颗粒。 当在多个绝缘体层的堆叠方向上观察时，第一和第二放电电极相对于放电诱导部位于线圈侧。 元件本体具有空腔部分，当从线圈侧沿堆叠方向观察时，覆盖整个放电诱导部分的位置。 空腔部分与第一和第二放电电极的相互相对的部分和放电诱导部分接触。