# US 2021/0280362 A1 · Multilayer coil component

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- Number: US 2021/0280362 A1
- Document ID: US20210280362A1
- Status: Published application
- Kind: A1
- Application number: 17/191,017
- Filed: 2021-03-03
- Published: 2021-09-09
- Earliest claimed: 2020-03-04
- Assignees: TDK Corporation
- Applicants: TDK Corporation
- Inventors: Yuto SHIGA; Hajime KATO; Junichiro URABE; Kazuya TOBITA; Youichi KAZUTA; Noriaki HAMACHI; Toshinori MATSUURA; Yuichi TAKUBO
- Web page: https://patentgrep.com/patent/US20210280362A1

## CPC

- H01F 27/292: {Surface mounted devices}
- H01F 17/0013: {with stacked layers}
- H01F 17/02: without magnetic core
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

A multilayer coil component includes an element body, a coil disposed in the element body, and a terminal electrode disposed on the element body. The element body has a first side face and a second side face, a first end face and a second end face, and a first main face and a second main face. The terminal electrode includes a first electrode portion and a second electrode portion. The first electrode portion has a first exposed face exposed on the first main face. The second electrode portion has a second exposed face exposed on the first end face. The first exposed face and the second exposed face are adjacent to each other interposing a ridge portion. The first exposed face is separated from an outer edge of the first main face. The second exposed face is separated from an outer edge of the first end face.

## Claims

### Claim 1

A multilayer coil component comprising:
an element body including a plurality of insulator layers laminated in a first direction;
a coil disposed in the element body; and
a terminal electrode disposed on the element body, wherein
the element body has a rectangular parallelepiped shape, a first side face and a second side face opposed to each other in the first direction, a first end face and a second end face opposed to each other in a second direction intersecting the first direction, and a first main face and a second main face opposed to each other in a third direction intersecting the first direction and the second direction,
the terminal electrode includes a first electrode portion having a first exposed face exposed on the first main face and a second electrode portion having a second exposed face exposed on the first end face,
the first exposed face and the second exposed face are adjacent to each other interposing a ridge portion formed by the first main face and the first end face of the element body,
the first exposed face is separated from an outer edge of the first main face, and
the second exposed face is separated from an outer edge of the first end face.

### Claim 2 (depends on 1)

The multilayer coil component according to claim 1, wherein the coil includes a coil axis along the first direction.

### Claim 3 (depends on 1)

The multilayer coil component according to claim 1 further comprising:
a connecting conductor connecting an end portion of the coil and the second electrode portion, wherein
the connecting conductor is connected closer to the second main face than a center of the second electrode portion in the third direction and extends toward the second main face.

### Claim 4 (depends on 1)

The multilayer coil component according to claim 1, wherein
the first electrode portion has a first opposing face opposed to the first exposed face, and a pair of third side faces connecting the first exposed face and the first opposing face and opposed to each other in the second direction, and
each of the pair of third side faces is curved.

### Claim 5 (depends on 1)

The multilayer coil component according to claim 1, wherein
the second electrode portion has a second opposing face opposed to the second exposed face, and a pair of fourth side faces connecting the second exposed face and the second opposing face and opposed to each other in the third direction, and
each of the pair of fourth side faces is curved.

### Claim 6 (depends on 1)

The multilayer coil component according to claim 1, wherein the first electrode portion and the second electrode portion are not electrically connected to each other in the element body.

### Claim 7 (depends on 1)

The multilayer coil component according to claim 1, wherein the first electrode portion includes an end portion in the third direction, and
the end portion has an uneven shape.

### Claim 8 (depends on 1)

The multilayer coil component according to claim 1, wherein the second electrode portion includes an end portion in the second direction, and
the end portion has an uneven shape.