Taiyo Yuden Co., Ltd.

Fumi Mori

Shinichi Sasaki

Wakaaki Murai

Daisuke Iwai

Eriko Numata

A ceramic electronic component includes: a ceramic body including main surfaces perpendicular to a first axis and end surfaces perpendicular to a second axis; and external electrodes covering the end surfaces and extending from the end surfaces to the main surfaces. The external electrode includes a surface layer portion including a Sn plating layer, and an inner layer portion including a Ni plating layer adjacent to the Sn plating layer and including rounded inner end portions on the main surfaces. In a cross-section perpendicular to a third axis, a ratio t/tis 0.4 or more, where tis a thickness in the first axis direction of a portion where an inclination of a tangent line of an outer surface of the inner end portion to each main surface is 45°, and tis a maximum thickness in the first axis direction of the inner layer portion on each main surface.

Ceramic electronic component and circuit board

A multi-layer ceramic electronic component includes a ceramic body and an external electrode. The ceramic body includes a plurality of internal electrodes laminated in one axial direction, and an end surface extending along a plane parallel to the axial direction, at least part of the plurality of internal electrode being drawn from the end surface. The external electrode covers the end surface of the ceramic body. In a thermal desorption spectrum of water of the multi-layer ceramic electronic component by thermal desorption spectroscopy, a ratio P/Pof a detection intensity Pof a first peak in a range of 200° C. to 300° C. to a detection intensity Pof a second peak in a range of 550° C. to 800° C. is equal to or lower than 11.

Multi-layer ceramic electronic component and circuit board including the same

A ceramic electronic part which includes a ceramic part body substantially in a parallelepiped form and having a first outer electrode at one end portion thereof and a second outer electrode at an opposite end portion thereof. The first outer electrode contiguously includes a main part provided on one surface in the third direction of the ceramic part body and a sub part provided on one surface in the first direction of the ceramic part body, and the second outer electrode contiguously includes a main part provided on one surface in the third direction of the ceramic part body and a sub part provided on an other surface in the first direction of the ceramic part body. The ceramic electronic part suffers warpage causing first and second maximum gaps to occur between the main parts of the outer electrodes in the second direction and a virtual plane.

Ceramic electronic part and method for manufacturing the same

Disclosed is a ceramic electronic component having external electrodes on each of opposing ends of a rectangular parallelepiped ceramic component body incorporating a functional portion. Facing directions of two opposing faces, other two opposing faces, and remaining two opposing faces of the ceramic component body are defined as first, second, and third directions, respectively, and dimensions along the respective directions are defined as first to third direction dimensions. Under this condition, the external electrode is of a two-face type continuously including a first face portion disposed on one face in the first direction and a second face portion disposed on one face in the third direction. A main layer portion of a protective portion is disposed on another face in the third direction and a first wraparound portion of the protective portion is disposed continuously with the main layer portion on each of the two faces in the second direction.

Ceramic electronic component, manufacturing method of ceramic electronic component, and electronic component-mounting circuit board

A ceramic electronic part which includes a ceramic part body substantially in a parallelepiped form and having a first outer electrode at one end portion thereof and a second outer electrode at an opposite end portion thereof. The first outer electrode contiguously includes a main part provided on one surface in the third direction of the ceramic part body and a sub part provided on one surface in the first direction of the ceramic part body, and the second outer electrode contiguously includes a main part provided on one surface in the third direction of the ceramic part body and a sub part provided on an other surface in the first direction of the ceramic part body. The ceramic electronic part suffers warpage causing first and second maximum gaps to occur between centers in the second direction of the main parts of the outer electrodes and a virtual plane.

Growing community of inventors

Tokyo, Japan

Fumi Mori