Chip ceramic semiconductor electronic component
AssigneeMurata Manufacturing Co., Ltd.
InventorsKeisuke Isogai, Yoshinobu Saki
Life of this patent
Estimating the term…
Abstract
A chip ceramic semiconductor electronic component includes a ceramic body including a ceramic semiconductor, and a first surface and a second surface in contact with the first surface, the first outer electrode on the first surface of the ceramic body, and the second outer electrode covering the first outer electrode and extending onto the second surface of the ceramic body, in which an area of a first surface of the first outer electrode is less than about 0.17 mm2, and a hard particle made of a material harder than the first outer electrode is at the interface between the first and second outer electrodes.
Claims20
A chip ceramic semiconductor electronic component comprising:
- a ceramic body including a ceramic semiconductor, and a first surface and a second surface in contact with the first surface;
- a first outer electrode on the first surface of the ceramic body;
- and
- a second outer electrode covering the first outer electrode and extending onto the second surface of the ceramic body;
- wherein
- an area of a first surface of the first outer electrode is less than about 0.17 mm2;
- a hard particle made of a material harder than the first outer electrode is at an interface between the first outer electrode and the second outer electrode;
- the chip ceramic semiconductor electronic component satisfies expression (1):
- 1.03≥P/V≥0.25 (1), where
- P represents a volume of the hard particle;
- and
- V represents a volume of the first outer electrode included in a range from the interface between the first outer electrode and the second outer electrode to a depth D in a direction toward an inside of the first outer electrode, the depth D being the product of about 1.2 and an average particle diameter of the hard particle.
A chip ceramic semiconductor electronic component comprising:
- a ceramic body including a ceramic semiconductor, and a first surface and a second surface in contact with the first surface;
- a first outer electrode on the first surface of the ceramic body;
- and
- a second outer electrode covering the first outer electrode and extending onto the second surface of the ceramic body;
- wherein
- an area of a first surface of the first outer electrode is less than about 0.17 mm2;
- a hard particle made of a material harder than the first outer electrode is at an interface between the first outer electrode and the second outer electrode;
- an occupied area of the hard particle at the interface between the first outer electrode and the second outer electrode satisfies expression (2):
- 0.90≥PS/(IFS+PS)≥0.20 (2), where
- PS represents an area occupied by the hard particles at the interface between the first outer electrode and the second outer electrode;
- and
- IFS represents an area by which the first outer electrode and the second outer electrode are in contact at the interface between the first outer electrode and the second outer electrode.
Dependencies are inferred from the claim text.