Multilayer ceramic electronic component
In an embodiment, in a multilayer ceramic capacitor 10 , a first insulative layer 13 - 1 having parts A 1 , A 2 covered by the first part 12 b of each external electrode 12 is provided on one third-direction face, while a second insulative layer 13 - 2 having parts A 3 , A 4 covered by the second part 12 c of each external electrode 12 is provided on the other third-direction face, of the capacitor body 11 of the multilayer ceramic capacitor 10 . The multilayer ceramic electronic component can prevent moisture intrusion into the component body as much as possible, even when the multilayer ceramic electronic component is made thin.
1. A multilayer ceramic electronic component comprising:
(i) a component body of roughly rectangular solid shape having internal conductor layers, and
(ii) external electrodes that are provided on the component body, wherein:
when a direction across two opposing faces among six faces of the component body is defined as a first direction, a direction across other two opposing faces is defined as a second direction wherein the internal conductor layers each extend on a plane defined by the first and second directions, and a direction across remaining two opposing faces is defined as a third direction which is a thickness direction of the internal conductor layers, then the external electrodes each have a first part present on one third-direction face of the component body, and
(iii) an insulative layer provided on the one third-direction face of the component body and having a part covered by the first part of each external electrode in a manner inhibiting moisture intrusion into the component body, wherein, among first-direction faces, second-direction faces, and the one third-direction face, the insulative layer is provided solely on the one third-direction face,
wherein the first part of each external electrode has a base conductor film and a surface conductor film covering the base conductor film, and a third-direction dimension of the insulative layer is smaller than a third-direction dimension of the base conductor film at the first part of each external electrode.
2. The multilayer ceramic electronic component according to claim 1 , wherein the external electrodes are provided on both first-direction ends of the component body, respectively, and the part of the insulative layer covered by the first part of each external electrode is provided on the one third-direction face at each of the two first-direction ends.
3. The multilayer ceramic electronic component according to claim 1 , wherein the external electrodes each have a second part present on another third-direction face of the component body, and a second insulative layer having a part covered by the second part of each external electrode in a manner inhibiting moisture intrusion into the component body is provided on the other third-direction face of the component body.
4. The multilayer ceramic electronic component according to claim 3 , wherein a third-direction dimension of the second insulative layer is smaller than a third-direction dimension of the second part of the external electrode.
5. The multilayer ceramic electronic component according to claim 1 , wherein the multilayer ceramic electronic component is a multilayer ceramic capacitor, and the component body has a capacitive part constituted by multiple internal electrode layers that are stacked together with dielectric layers in between.
6. A multilayer ceramic electronic component comprising:
(i) a component body of roughly rectangular solid shape having internal conductor layers, and
(ii) external electrodes that are provided on the component body, wherein:
when a direction across two opposing faces among six faces of the component body is defined as a first direction, a direction across other two opposing faces is defined as a second direction wherein the internal conductor layers each extend on a plane defined by the first and second directions, and a direction across remaining two opposing faces is defined as a third direction which is a thickness direction of the internal conductor layers, then the external electrodes each have a first part present on one third-direction face of the component body, and
(iii) an insulative layer provided on the one third-direction face of the component body and having a part covered by the first part of each external electrode in a manner inhibiting moisture intrusion into the component body, wherein, among first-direction faces, second-direction faces, and the one third-direction face, the insulative layer is provided solely on the one third-direction face,
wherein the external electrodes are provided on both first-direction ends of the component body, respectively, and the part of the insulative layer covered by the first part of each external electrode is provided on the one third-direction face at each of the two first-direction ends,
wherein a first-direction dimension of the insulative layer is smaller than a first-direction dimension of the component body and greater than a first-direction interval between the first parts of the external electrodes.
7. The multilayer ceramic electronic component according to claim 6 , wherein a third-direction dimension of the insulative layer is smaller than a third-direction dimension of the first part of each external electrode.
8. A multilayer ceramic electronic component comprising:
(i) a component body of roughly rectangular solid shape having internal conductor layers, and
(ii) external electrodes that are provided on the component body, wherein:
when a direction across two opposing faces among six faces of the component body is defined as a first direction, a direction across other two opposing faces is defined as a second direction wherein the internal conductor layers each extend on a plane defined by the first and second directions, and a direction across remaining two opposing faces is defined as a third direction which is a thickness direction of the internal conductor layers, then the external electrodes each have a first part present on one third-direction face of the component body, and
(iii) an insulative layer provided on the one third-direction face of the component body and having a part covered by the first part of each external electrode in a manner inhibiting moisture intrusion into the component body, wherein, among first-direction faces, second-direction faces, and the one third-direction face, the insulative layer is provided solely on the one third-direction face,
wherein the external electrodes each have a second part present on another third-direction face of the component body, and a second insulative layer having a part covered by the second part of each external electrode in a manner inhibiting moisture intrusion into the component body is provided on the other third-direction face of the component body,
wherein the second part of each external electrode has a base conductor film and a surface conductor film covering the base conductor film, and a third-direction dimension of the second insulative layer is smaller than a third-direction dimension of the base conductor film at the second part of each external electrode.
9. The multilayer ceramic electronic component according to claim 8 , wherein the external electrodes are provided on both first-direction ends of the component body, respectively, and the part of the second insulative layer covered by the second part of each external electrode is provided on the other third-direction face at each of two first-direction ends.
10. The multilayer ceramic electronic component according to claim 9 , wherein a first-direction dimension of the second insulative layer is smaller than a first-direction dimension of the component body and greater than a first-direction interval between the second parts of the external electrodes.