Ceramic electronic component with low equivalent series resistance and method for manufacturing the same
AssigneeMurata Manufacturing Co., Ltd.
InventorsKosuke Onishi, Tomohiro Sasaki, Yasuhiro Nishisaka, Akira Ishizuka, Akihiro Yoshida
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Abstract
External electrodes, electrically connected to exposed portions of internal electrodes, are arranged on end surfaces of a ceramic main body of a laminated ceramic capacitor. Alloy layers of a metal contained in internal electrodes, and a metal contained in external electrodes, are arranged at the boundaries between external electrodes, and the ceramic main body and internal electrodes. Plating layers are provided on surfaces of external electrodes. A ceramic electronic component having a reduced ESR is thus provided.
Claims20
A ceramic electronic component comprising:
- a ceramic main body including a plurality of laminated ceramic layers;
- internal electrodes disposed inside the ceramic main body, the internal electrodes including respective exposed portions exposed on an end surface of the ceramic main body;
- an external electrode arranged on the end surface of the ceramic main body so as to be electrically connected with each of the exposed portions of the internal electrodes;
- and
- a plating film arranged on the external electrode;
- wherein
- the external electrode includes a metal medium in which metal powder is integrated and a glass medium in which glass powder is integrated;
- an alloy layer of a metal contained in the external electrode and a metal contained in each of the internal electrodes is located at an interface between the external electrode, and the ceramic main body and the internal electrodes so as to extend across adjacent exposed portions of the internal electrodes;
- and
- the metal medium and the glass medium are located between the alloy layer and the plating film.
Dependencies are inferred from the claim text.