Murata Manufacturing Co., Ltd.

Ryo Nishimura

Satoshi Muramatsu

Kosuke Onishi

Yukie Watanabe

Hisashi Nakahiro

A multilayer ceramic capacitor includes a multilayer body including laminated dielectric layers and laminated internal electrode layers on the dielectric layers, and external electrodes connected to the internal electrode layers. The multilayer body further includes an inner layer portion, a first main surface-side outer layer portion, and a second main surface-side outer layer portion. At least one of the first main surface-side outer layer portion or the second main surface-side outer layer portion includes a discharge path along a plane perpendicular or substantially perpendicular to the lamination direction to discharge a chemical element to outside of the multilayer body.

Multilayer ceramic capacitor

A multilayer ceramic capacitor includes a ceramic body including ceramic layers, first internal electrodes, and second internal electrodes laminated in a height direction, a first external electrode on at least part of a first end surface and on part of a first main surface and not on a second main surface, the first external electrode being electrically connected to the first internal electrodes, a second external electrode on at least part of a second end surface and on part of the first main surface and is not on the second main surface, the second external electrode being electrically connected to the second internal electrodes, at least two penetration portions penetrating the ceramic body between the first and second main surfaces, and a reinforcing layer on at least part of the second main surface, the reinforcing layer covering the at least two penetration portions exposed from the ceramic body.

A multilayer ceramic capacitor includes a multilayer body, and external electrodes on a portion of a side surface portion including four side surface of the multilayer body, and on a portion of a first main surface of the multilayer body. The first main surface includes first regions covered with the external electrodes and a second region exposed from the external electrodes. The first regions of the first main surface each include recesses therein. The recesses in each of the first regions each include a spherical curved wall surface. The recesses in each of the first regions each have an average inlet size of about 0.3 μm or more and about 10.5 μm or less.

A multilayer ceramic capacitor includes a multilayer body, and external electrodes on a portion of a side surface portion including four side surface of the multilayer body, and on a portion of a first main surface of the multilayer body. The first main surface includes first regions covered with the external electrodes and a second region exposed from the external electrodes. The first regions of the first main surface each include recesses therein. The recesses in each of the first regions each include a spherical curved wall surface. The recesses in each of the first regions each have an average inlet size of about 0.3 &#x3bc;m or more and about 10.5 &#x3bc;m or less.

A multilayer ceramic electronic component includes a multilayer body and a protective layer provided at least on a first main surface or a second main surface of the multilayer body, in which the protective layer includes a carbon material, has a carbon content of about 70 atm % or more determined through exclusion of hydrogen, oxygen, and halogen contents, and has a sp3 percentage of about 10% or more as an index of C&#x2014;C bond type.

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Nagaokakyo, Japan

Ryo Nishimura