| CPC H01G 4/30 (2013.01) [H01G 4/012 (2013.01); H01G 4/248 (2013.01)] | 5 Claims |
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1. A multilayer ceramic capacitor comprising:
a ceramic body including an electrode-stacked portion and a pair of cover portions, the electrode-stacked portion having a plurality of first internal electrodes and a plurality of second internal electrodes, the plurality of first internal electrodes and the plurality of second internal electrodes being alternately stacked along a direction of a first axis, the plurality of first internal electrodes being led out to a first end surface of the ceramic body that is perpendicular to a second axis orthogonal to the first axis, the plurality of second internal electrodes being led out to a second end surface of the ceramic body that is perpendicular to the second axis, the plurality of first internal electrodes and the plurality of second internal electrodes containing Ni as a main component, the pair of cover portions covering the electrode-stacked portion from respective sides in the direction of the first axis and respectively constituting first and second principal surfaces of the ceramic body perpendicular to the first axis, a dimension in the direction of the first axis of the ceramic body being equal to or greater than 1.5 times a dimension in a direction of a third axis orthogonal to the first axis and the second axis;
first and second external electrodes that include first and second end-surface covering portions, first and second extending portions, and third and fourth extending portions, respectively, and contain Cu as a main component, the first and second end-surface covering portions covering the first and second end surfaces, respectively, of the ceramic body, the first extending portion extending from the first end-surface covering portion to the first and second principal surfaces of the ceramic body, and the second extending portion extending from the second end-surface covering portion to the first and second principal surfaces of the ceramic body, the third extending portion extending from the first end-surface covering portion to a first side surface and a second side surface of the ceramic body, the fourth extending portion extending from the second end-surface covering portion to the first side surface and the second side surface, the first side surface and the second side surface being perpendicular to the third axis,
wherein the plurality of first internal electrodes include a first inner-layer internal electrode and a first outer-layer internal electrode, the first inner-layer internal electrode having a rectangular planar shape having four corners, the first outer-layer internal electrode having a maximum width in the direction of the third axis that is substantially the same as a width in the direction of the third axis of the first inner-layer internal electrode and being shaped so as to be absent at and adjacent to positions corresponding to at least two of four corners of the first inner-layer internal electrode in a plan view,
wherein the plurality of second internal electrodes include a second inner-layer internal electrode and a second outer-layer internal electrode, the second inner-layer internal electrode having a rectangular planar shape having four corners, the second outer-layer internal electrode having a maximum width in the direction of the third axis that is substantially the same as a width in the direction of the third axis of the second inner-layer internal electrode and being shaped so as to be absent at and adjacent to positions corresponding to at least two of four corners of the second inner-layer internal electrode in the plan view,
wherein the first and second inner-layer internal electrodes have the same rectangular planar shape with 180 degrees different orientations in the plan view, and the first and second outer-layer internal electrodes have the same planar shape with 180 degrees different orientations in the plan view,
wherein the electrode-stacked portion includes a pair of outer layer portions that are adjacent to the pair of cover portions, respectively, in which the first and second outer-layer internal electrodes are stacked, and an inner layer portion positioned between the pair of outer layer portions in which the first and second inner-layer internal electrodes are stacked,
wherein the ceramic body has substantially a rectangular parallelepiped shape with eight corners, each of the eight corners and adjacent portions thereof being covered with one of the first and second end-surface covering portions, one of the first and second extending portions, and one of the third and fourth extending portions, and
wherein an orientation of the rectangular planar shape of the first and second inner-layer internal electrodes are aligned with an orientation of the rectangular parallelepiped shape of the ceramic body in the plan view.
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