Multilayer coil component

Patent metadata

Field	Value
Publication number	US-12488936-B2
Application number	US-202117546851-A
Country	US
Kind code	B2
Filing date	Dec 9, 2021
Priority date	Dec 14, 2020
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A multilayer coil component includes an element body, a coil, and an external terminal. The element body includes a plurality of insulator layers that is laminated. The coil is disposed in the element body. The external terminal includes a plurality of conductor layers that is laminated. The external terminal is electrically connected to the coil. The element body includes a main face and a first side face adjacent to the main face. The external terminal is embedded in the element body in such a way as to be separated from the first side face and exposed from the main face. The external terminal includes a first separated face that is separated from the first side face as being separated from the main face.

First claim

The invention claimed is:

1 . A multilayer coil component comprising:
an element body including a plurality of insulator layers that is laminated; a coil disposed in the element body; and an external terminal including a plurality of conductor layers that is laminated and electrically connected to the coil, wherein the element body includes a main face and a first side face adjacent to the main face, wherein the external terminal is embedded in the element body in such a way as to be separated from the first side face and exposed from the main face, and wherein the external terminal includes a first face that is separated from the first side face, the first face including: a first portion that extends from the main face in a direction away from the main face and is parallel with the first side face in the direction away from the main face, and a second portion that extends from an end of the first portion in the direction away from the main face and that becomes more distant from the first side dace when extending farther away from the main face.

2 . The multilayer coil component according to claim 1 ,
wherein a ridge portion between the main face and the first side face has a chamfer shape.

3 . The multilayer coil component according to claim 2 ,
wherein the ridge portion has a rounded chamfer shape, and a thickness of the external terminal is greater than a radius of curvature of the ridge portion.

4 . The multilayer coil component according to claim 2 ,
wherein the ridge portion has a rounded chamfer shape, and the first face is curved with a radius of curvature greater than a radius of curvature of the ridge portion.

5 . The multilayer coil component according to claim 2 ,
wherein the external terminal is disposed outside the ridge portion.

6 . The multilayer coil component according to claim 1 ,
wherein the element body further includes a pair of second side faces each adjacent to the main face, the first side face is adjacent to each of the pair of second side faces, and the pair of second side faces face away from each other, and the external terminal further includes a pair of second faces, each second face being separated from a respective one of the pair of second side faces.

7 . A multilayer coil component comprising:
an element body including a plurality of insulator layers that is laminated; a coil disposed in the element body; and an external terminal including a plurality of conductor layers that is laminated and electrically connected to the coil, wherein the element body includes a main face that has a rectangular shape and a pair of side faces adjacent to each other and adjacent to the main face, wherein the external terminal is embedded in the element body in such a way as to be separated from the pair of side faces and to be exposed from the main face; and includes a second corner portion disposed adjacent to a first corner portion between the pair of side faces when viewed from a direction orthogonal to the main face, wherein a radius of curvature of the second corner portion is greater than a radius of curvature of the first corner portion, and wherein the external terminal includes a first face that is separated from the first side face, the first face including
a first portion that extends from the main face in a direction away from the main face and is parallel with the first side face in the direction away from the main face, and
a second portion that extends from an end of the first portion in the direction away from the main face and that becomes more distant from the first side dace when extending farther away from the main face.

Assignees

• Tdk Corp

Inventors

• Shiga Yuto
• Kazuta Youichi
• Takubo Yuichi
• Urabe Junichiro
• Hamachi Noriaki
• TOBITA Kazuya
• Matsuura Toshinori

Classifications

• H01F17/0013 Primary

  with stacked layers · CPC title

• H01F27/292 Primary

  Surface mounted devices · CPC title

• H01F2017/004

  with the coil helically wound around an axis without a core · CPC title

• H01F27/29

  Terminals; Tapping arrangements {for signal inductances} · CPC title

• H01F17/00

  Fixed inductances of the signal type {(coils in general H01F5/00)} · CPC title