公开(公告)号：US20170345553A1

公开(公告)日：2017-11-30

申请号：US15598606

申请日：2017-05-18

Applicant: TDK CORPORATION

Inventor： Masashi SHIMOYASU ,  Shinichi SATO ,  Seiichi NAKAGAWA ,  Mamoru KAWAUCHI ,  Shigetoshi KINOUCHI ,  Mitsuru ITO ,  Yuto SHIGA

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/32

CPC classification number: H01F27/2804 ,  H01F17/0013 ,  H01F27/29 ,  H01F27/292 ,  H01F27/324 ,  H01F2027/2809

Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.

公开(公告)号：US20250069795A1

公开(公告)日：2025-02-27

申请号：US18941111

申请日：2024-11-08

Applicant: TDK CORPORATION

Inventor： Masashi SHIMOYASU ,  Shinichi SATO ,  Seiichi NAKAGAWA ,  Mamoru KAWAUCHI ,  Shigetoshi KINOUCHI ,  Mitsuru ITO ,  Yuto SHIGA

IPC: H01F27/28 ,  H01F17/00 ,  H01F27/29 ,  H01F27/32

Abstract: A multilayer coil component includes an element body, a coil in the element body, a connection conductor in the element body, and an external electrode on the element body. The element body includes a principal surface arranged to constitute a mounting surface and an end surface positioned adjacent to the principal surface. The connection conductor includes one end connected to the coil and another end connected to the external electrode. The external electrode includes a sintered metal layer formed on the element body and a conductive resin layer formed on the sintered metal layer. The sintered metal layer includes a portion on the principal surface and a portion on the end surface. The portion on the principal surface has an average thickness smaller than an average thickness of the portion on the end surface.

公开(公告)号：US20240038436A1

公开(公告)日：2024-02-01

申请号：US18378815

申请日：2023-10-11

Applicant: TDK CORPORATION

Inventor： Masashi SHIMOYASU ,  Shinichi SATO ,  Seiichi NAKAGAWA ,  Mamoru KAWAUCHI ,  Shigetoshi KINOUCHI ,  Mitsuru ITO ,  Yuto SHIGA

IPC: H01F27/28 ,  H01F17/00 ,  H01F27/29 ,  H01F27/32

CPC classification number: H01F27/2804 ,  H01F17/0013 ,  H01F27/292 ,  H01F27/29 ,  H01F27/324 ,  H01F2027/2809

Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.

公开(公告)号：US20220130594A1

公开(公告)日：2022-04-28

申请号：US17573301

申请日：2022-01-11

Applicant: TDK CORPORATION

Inventor： Masashi SHIMOYASU ,  Shinichi SATO ,  Seiichi NAKAGAWA ,  Mamoru KAWAUCHI ,  Shigetoshi KINOUCHI ,  Mitsuru ITO

IPC: H01F27/28 ,  H01F17/00 ,  H01F27/29 ,  H01F27/32

Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.

公开(公告)号：US20200185144A1

公开(公告)日：2020-06-11

申请号：US16789893

申请日：2020-02-13

Applicant: TDK CORPORATION

Inventor： Masashi SHIMOYASU ,  Shinichi SATO ,  Seiichi NAKAGAWA ,  Mamoru KAWAUCHI ,  Shigetoshi KINOUCHI ,  Mitsuru ITO

IPC: H01F27/28 ,  H01F27/32 ,  H01F27/29 ,  H01F17/00

Abstract: A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.