公开(公告)号：US20240222007A1

公开(公告)日：2024-07-04

申请号：US18609705

申请日：2024-03-19

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Takayuki ARAI ,  Tomoo KASHIWA

IPC: H01F41/04 ,  B22F1/16 ,  H01F1/26 ,  H01F17/04 ,  H01F27/28 ,  H01F27/29 ,  H01F41/02

CPC classification number: H01F41/04 ,  B22F1/16 ,  H01F1/26 ,  H01F17/04 ,  H01F27/2852 ,  H01F27/292 ,  H01F41/0246 ,  B22F2998/10 ,  B22F2999/00

Abstract: A method of manufacturing a coil component includes providing an intermediate body, heating the intermediate body at a first temperature ranging from 100 to 350° C., and after the heating at the first temperature, heating the intermediate body at a higher second temperature ranging from 600 to 900° C. The providing of the intermediate body including (i) preparing a base material having a flat plate shape or a wire shape, (ii) bending the base material to form a conductor portion, (iii) preparing a metal magnetic paste containing a resin and a plurality of metal magnetic particles mainly composed of iron, and (iv) applying a molding pressure to the metal magnetic paste covering the base material to form the intermediate body including a substrate body containing the plurality of metal magnetic particles and the conductor portion. The magnetic base body including an oxide coating film containing iron oxide on a surface of each of the metal magnetic particles.

公开(公告)号：US20210134506A1

公开(公告)日：2021-05-06

申请号：US17150979

申请日：2021-01-15

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Masahiro HACHIYA ,  Hitoshi MATSUURA ,  Takayuki ARAI ,  Shuhei KURAHASHI ,  Hideo MACHIDA ,  Hidekazu TESHIGAWARA ,  Naoya HONMO

IPC: H01F17/00 ,  B22F1/02 ,  H01F27/255 ,  H01F27/28 ,  H01F1/20 ,  H01F1/24 ,  H01F1/36 ,  H01F17/04 ,  H01F27/29

Abstract: A coil component includes: a magnetic body part and a cover part covering one side of a magnetic layer part; and a coil part embedded in the magnetic body part. The magnetic body part is comprised of the following two types of layers: (A) an oblate soft magnetic grain-containing layer, and (B) a spherical grain-containing layer, wherein layer (A) extends over the entire range of the magnetic body part except for a portion including the coil part in a direction perpendicular to an axis direction of the coil part, layer (B) adjoins layer (A) in the axis direction. The cover part is constituted by multiple layers including one or more of layer(s) (A) and one or more of layer(s) (B) and extending over the entire range of the magnetic body part in the direction perpendicular to the axis direction.

公开(公告)号：US20230005657A1

公开(公告)日：2023-01-05

申请号：US17839145

申请日：2022-06-13

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Takayuki ARAI ,  Naoya TERAUCHI ,  Tomoo KASHIWA

IPC: H01F27/29 ,  H01F27/24

Abstract: An inductor array according to one or more embodiments of the invention includes: a plurality of internal conductors spaced apart from each other along a reference axis; a magnetic base body; a plurality of first external electrodes each connected to one end of associated one of the plurality of internal conductors; and a plurality of second external electrodes each connected to the other end of associated one of the plurality of internal conductors. The magnetic base body may include: a body portion having the plurality of internal conductors embedded therein; and a first high-permeability portion having a higher relative permeability than the body portion.

公开(公告)号：US20220415565A1

公开(公告)日：2022-12-29

申请号：US17837765

申请日：2022-06-10

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Takayuki ARAI ,  Naoya TERAUCHI ,  Tomoo KASHIWA

IPC: H01F27/29 ,  H01F27/06 ,  H01F27/24

Abstract: An inductor array includes a magnetic base body having first and second surfaces opposed to each other and a third surface connecting between the first and second surfaces, and also includes first and second end internal conductors having the same shape. The first end internal conductor includes first-end first conductor portions and fewer first-end second conductor portions, alternating with and being connected to each other. The second end internal conductor includes second-end first conductor portions and fewer second-end second conductor portions, alternating with and being connected to each other. The first-end first conductor portions are positioned away from the first surface by a first end distance in a reference axis direction and face the first surface. The second-end second conductor portions are positioned away from the second surface by a second end distance less than the first end distance in the reference axis direction and face the second surface.

公开(公告)号：US20220122766A1

公开(公告)日：2022-04-21

申请号：US17565202

申请日：2021-12-29

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Akihisa MATSUDA ,  Daisuke YAMAGUCHI ,  Takayuki ARAI

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

Abstract: A coil component according to one embodiment of the present invention includes: a first insulator body containing first magnetic metal particles; a second insulator body containing second magnetic metal particles; a first coil conductor provided in the first insulator body and wound around a coil axis for N1 turns such that intervals between adjacent turns are g1; and a second coil conductor provided in the second insulator body and wound around the coil axis for N2 turns such that intervals between adjacent turns are g2. In the embodiment, a first coil surface of the first coil conductor faces a second coil surface of the second coil conductor, and a distance T between the first coil surface and the second coil surface satisfies a relationship T≥g1×N1+g2×N2.

公开(公告)号：US20210304954A1

公开(公告)日：2021-09-30

申请号：US17217277

申请日：2021-03-30

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Natsuko SATO ,  Takayuki ARAI ,  Atsuko KASAHARA ,  Tomoo KASHIWA

IPC: H01F27/28 ,  H01F27/24 ,  H01F41/04

Abstract: A coil component includes an insulating base body and a coil conductor arranged in the base body and having a winding portion extending around a coil axis. The insulating base body includes a magnetic body portion made of a magnetic material and a magnetic gap portion made of a low-permeability material having a lower relative permeability than the magnetic material. The magnetic gap portion is shaped like a ring when seen in a direction along the coil axis and arranged within the winding portion. The magnetic body portion includes a first region positioned within the winding portion, a second region positioned opposite the first region with respect to the magnetic gap portion in the direction along the coil axis, and a third region arranged within a through hole defined by an inner peripheral surface of the magnetic gap portion, where the third region connects together the first and second regions.

公开(公告)号：US20210090786A1

公开(公告)日：2021-03-25

申请号：US17024304

申请日：2020-09-17

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Takayuki ARAI ,  Naoya TERAUCHI

IPC: H01F27/29 ,  H01F27/255 ,  H01F17/00

Abstract: An inductor according to one embodiment of the present invention includes: a base body having a mounting surface, a top surface, and a first end surface; first and second external electrodes attached to the mounting surface and spaced from each other; and an internal conductor disposed in the base body and extending linearly from the first external electrode to the second external electrode. One end of the internal conductor is exposed from the mounting surface and connected to the first external electrode, and the other end of the internal conductor is exposed from the mounting surface and connected to the second external electrode. The base body is partitioned into a first region and a second region, the first region being enclosed by the internal conductor and the mounting surface, and a ratio of an area of the second region to an area of the first region is 0.95 to 1.0.

公开(公告)号：US20200176170A1

公开(公告)日：2020-06-04

申请号：US16685988

申请日：2019-11-15

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Naoya TERAUCHI ,  Takayuki ARAI

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

Abstract: An inductance element includes: an insulative substrate body of a rectangular solid shape having length dimension L, height dimension H, and width dimension W, where 1.5≤W/H; at least one internal conductor built in the substrate body and capable of making an electrical current flow therethrough in one uniform direction orthogonal to a cross-section of the substrate body; and a pair of external electrodes provided on the surface of the substrate body in a manner respectively connected to both ends of the internal conductor, so that the internal conductor can make an electrical current flow therethrough in the one uniform direction; wherein, in the cross-section of the substrate body, a rectangular internal conductor region having height dimension Eh and width dimension Ew surrounds the internal conductor in a manner contacting the outermost positioned portions of the internal conductor in the height and width directions, wherein Ew/Eh>W/H.

公开(公告)号：US20190304666A1

公开(公告)日：2019-10-03

申请号：US16366969

申请日：2019-03-27

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Takayuki ARAI ,  Masanori NAGANO

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

Abstract: In an exemplary embodiment, a passive component which is a surface mounting component, includes: a substrate body 10 having insulation property; an internal conductor 50 embedded in the substrate body 10; and an external electrode 70 provided on the bottom face 12, which is the mounting surface, of the substrate body 10 and electrically connected to the internal conductor 50; wherein the external electrode 70 has a face 86 roughly parallel with the bottom face 12 of the substrate body 10, and a dome-shaped projection 80 that bulges, with reference to the roughly parallel face 86, away from the bottom face 12 of the substrate body 10. The passive component can prevent misalignment problems at mounting.

公开(公告)号：US20180114627A1

公开(公告)日：2018-04-26

申请号：US15849966

申请日：2017-12-21

Applicant: Taiyo Yuden Co., Ltd.

Inventor： Takayuki ARAI ,  Ryuichi KONDOU ,  Akiko YAMAGUCHI ,  Shinsuke TAKEOKA ,  Kazuhiko OYAMA ,  Kenji OTAKE

IPC: H01F27/245 ,  H01F27/29 ,  H01F17/04 ,  H01F1/03 ,  H01F1/28 ,  H01F27/28 ,  H01F17/00 ,  H01F27/255

CPC classification number: H01F27/245 ,  H01F1/0306 ,  H01F1/28 ,  H01F5/00 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/255 ,  H01F27/2804 ,  H01F27/29 ,  H01F27/292

Abstract: One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The three or more magnetic alloy particles have an average particle diameter of 4 μm or smaller. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.