# US 2021/0280375 A1 · Multi-layer ceramic electronic component

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- Number: US 2021/0280375 A1
- Document ID: US20210280375A1
- Status: Published application
- Kind: A1
- Application number: 17/237,452
- Filed: 2021-04-22
- Published: 2021-09-09
- Earliest claimed: 2018-07-17
- Assignees: Taiyo Yuden Co., Ltd.
- Applicants: Taiyo Yuden Co., Ltd.
- Inventors: Yasutomo SUGA; Masataka WATABE; Takeshi NAKAJIMA; Yuji TOMIZAWA; Toshiya KUJI
- Web page: https://patentgrep.com/patent/US20210280375A1

## CPC

- H01G 4/30: Stacked capacitors (H01G4/33 takes precedence)
- H01G 4/008: Selection of materials
- H01G 4/012: Form of non-self-supporting electrodes
- H01G 4/12: Ceramic dielectrics {(H01G4/085 takes precedence)}
- H01G 4/1218: {based on titanium oxides or titanates (H01G4/1245 takes precedence)}
- H01G 4/228: Terminals
- H01G 4/232: electrically connecting two or more layers of a stacked or rolled capacitor
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)

## Abstract

A multi-layer ceramic electronic component includes: a ceramic body including first and second main surfaces facing in a first axis direction, first and second end surfaces facing in a second axis direction, and first and second internal electrodes; a first external electrode including a first cover portion covering the first end surface, and a first extended portion extending from the first cover portion to the second main surface; and a second external electrode including a second cover portion covering the second end surface, and a second extended portion extending from the second cover portion to the second main surface, the multi-layer ceramic electronic component satisfying that, when T1 represents a dimension of the ceramic body in the first axis direction and T2 represents a dimension of each extended portion in the first axis direction, T1+T2 is 50 μm or less, and T2/(T1+T2) is 0.32 or less.

## Claims

### Claim 1

A multi-layer ceramic electronic component, comprising:
a ceramic body including
a first main surface and a second main surface that face in a first axis direction,
a first end surface and a second end surface that face in a second axis direction orthogonal to the first axis direction,
a first internal electrode that is drawn to the first end surface, and
a second internal electrode that faces the first internal electrode and is drawn to the second end surface,
a length of the ceramic body measured in the second axis direction being longer than both a length of the ceramic body measured in the first axis direction and a length of the ceramic body measured in a third axis direction, the third axis direction being perpendicular to both the first axis direction and the second axis direction;
a first external electrode including
a first cover portion that covers the first end surface, and
a first extended portion that extends from the first cover portion to the second main surface; and
a second external electrode including
a second cover portion that covers the second end surface, and
a second extended portion that extends from the second cover portion to the second main surface,
the multi-layer ceramic electronic component satisfying that, when T1 represents a dimension of the ceramic body in the first axis direction, and when T2 represents a dimension of each of the first extended portion and the second extended portion in the first axis direction, T2/(T1+T2) is 0.32 or less,
wherein both the first external electrode and the second external electrode are absent from the first main surface.

### Claim 2 (depends on 1)

The multi-layer ceramic electronic component according to claim 1, wherein
a dimension of each of the first extended portion and the second extended portion in the second axis direction is equal to or larger than 25% of a dimension of the ceramic body in the second axis direction.

### Claim 3 (depends on 1)

The multi-layer ceramic electronic component according to claim 1, wherein
each of the first external electrode and the second external electrode includes a sputtering film.

### Claim 4 (depends on 1)

The multi-layer ceramic electronic component according to claim 1, wherein
T2/(T1+T2) is 0.04 or more.

### Claim 5 (depends on 1)

The multi-layer ceramic electronic component according to claim 1, wherein
T2 is 2 μm or more.

### Claim 6 (depends on 3)

The multi-layer ceramic electronic component according to claim 3, wherein
each of the first external electrode and the second external electrode includes a plating film, and
a dimension T4 between the sputtering film and the first main surface of the ceramic body is larger than a thickness T5, which is a dimension of the plating film in the second axis direction provided on the first cover portion and the second cover portion.

### Claim 7 (depends on 1)

The multi-layer ceramic electronic component according to claim 1, wherein
each of the first external electrode and the second external electrode includes a plating film,
an upper end of the plating film in the first axis direction is disposed with an interval of a dimension T6 from the first main surface in the first axis direction, and
the dimension T6 is 5 μm or more.