Ceramic capacitor with prevention portions on end electrodes
Provided is a capacitor including a ceramic main body, an internal electrode inside the ceramic main body, and a plurality of external electrodes respectively on a first surface and a second surface that are opposite to each other in a horizontal direction of the ceramic main body. Each of the plurality of external electrodes includes one or more prevention portions protruding in an outward direction of the ceramic main body or recessed in an inward direction of the ceramic main body.
1 . A capacitor comprising:
a ceramic main body;
an internal electrode inside the ceramic main body; and
a plurality of external electrodes respectively on a first surface and a second surface that are opposite to each other in a horizontal direction of the ceramic main body; and
a cover portion covering at least a portion of the plurality of external electrodes,
wherein each external electrode of the plurality of external electrodes comprises one or more prevention portions of a same material as the plurality of external electrodes protruding in an outward direction of the ceramic main body or recessed in an inward direction of the ceramic main body,
wherein each of the one or more prevention portions extends on at least two outer surfaces of each external electrode of the plurality of external electrodes, and
wherein the one or more prevention portions have a first section having a rectangular cuboid shape.
2 . The capacitor of claim 1 , wherein
the plurality of external electrodes comprise a first external electrode on the first surface of the ceramic main body and a second external electrode on the second surface of the ceramic main body,
the one or more prevention portions comprise a first prevention portion included in the first external electrode and a second prevention portion included in the second external electrode, and
the first prevention portion and the second prevention portion are at a same level.
3 . The capacitor of claim 2 , wherein the first prevention portion and the second prevention portion are parallel to the horizontal direction of the ceramic main body.
4 . The capacitor of claim 1 , wherein the one or more prevention portions comprise a lower prevention portion and an upper prevention portion that are provided to each external electrode of the plurality of external electrodes and separated from each other in a vertical direction.
5 . The capacitor of claim 4 , wherein the lower prevention portion and the upper prevention portion are integrally formed with the plurality of external electrodes and protrude in the outward direction of the ceramic main body or are recessed in the inward direction of the ceramic main body.
6 . The capacitor of claim 4 , wherein
one of the lower prevention portion and the upper prevention portion protrudes in the outward direction of the ceramic main body, and
another of the lower prevention portion and the upper prevention portion is recessed in the inward direction of the ceramic main body.
7 . The capacitor of claim 4 , wherein the lower prevention portion and the upper prevention portion have different heights or depths.
8 . The capacitor of claim 1 , wherein the cover portion comprises a metal or oxide.
9 . A capacitor comprising:
a ceramic main body comprising a plurality of dielectric layers stacked in a vertical direction;
a plurality of internal electrodes alternately disposed with the plurality of dielectric layers inside the ceramic main body;
a first external electrode on a first surface of the ceramic main body;
a second external electrode on a second surface that is opposite to the first surface in a horizontal direction; and
a cover portion covering at least a portion of each of the first external electrode and the second external electrode,
wherein the first external electrode comprises one or more first prevention portions of a same material as the first external electrode protruding in an outward direction of the ceramic main body or recessed in an inward direction of the ceramic main body,
wherein the second external electrode comprises one or more second prevention portions of a same material as the second external electrode protruding in the outward direction of the ceramic main body or recessed in the inward direction of the ceramic main body,
wherein each of the one or more first prevention portions extends on at least two outer surfaces of the first external electrode,
wherein each of the one or more second prevention portions extends on at least two outer surfaces of the second external electrode, and
wherein the one or more first prevention portions and the one or more second prevention portions have a first section having a rectangular cuboid shape.
10 . The capacitor of claim 9 , wherein the one or more first prevention portions and the one or more second prevention portions are at a same level.
11 . The capacitor of claim 9 , wherein the one or more first prevention portions and the one or more second prevention portions are parallel to the horizontal direction of the ceramic main body.
12 . The capacitor of claim 9 , wherein
the one or more first prevention portions comprise a first lower prevention portion and a first upper prevention portion that are provided to the first external electrode and separated from each other in the vertical direction, and
the one or more second prevention portions comprise a second lower prevention portion and a second upper prevention portion that are provided to the second external electrode and separated from each other in the vertical direction.
13 . The capacitor of claim 12 , wherein the first lower prevention portion, the first upper prevention portion, the second lower prevention portion, and the second upper prevention portion have different heights or depths.
14 . The capacitor of claim 9 , wherein the cover portion comprises a metal or oxide.
15 . An electronic device, the electronic device comprising:
a substrate comprising a core layer and an insulating layer formed on the core layer;
an electrode pad embedded in the insulating layer;
a solder resist coated on the substrate and forming an open area on the substrate;
a capacitor on the substrate; and
a solder connecting the substrate to the capacitor,
wherein the capacitor comprises:
a ceramic main body;
an internal electrode inside the ceramic main body;
a plurality of external electrodes respectively on a first surface of the ceramic main body and a second surface that is opposite to the first surface; and
a cover portion covering at least a portion of the plurality of external electrodes,
wherein the plurality of external electrodes are connected to the electrode pad through the solder, and
wherein each external electrode of the plurality of external electrodes comprises one or more prevention portions of a same material as the plurality of external electrodes protruding in an outward direction of the ceramic main body or recessed in an inward direction of the ceramic main body,
wherein each of the one or more prevention portions extends on at least two outer surfaces of each external electrode of the plurality of external electrodes, and
wherein the one or more prevention portions have a first section having a rectangular cuboid shape.
16 . The electronic device of claim 15 , wherein a top surface of the electrode pad is coplanar with a top surface of the substrate.
17 . The electronic device of claim 16 , wherein
the solder connects the plurality of external electrodes to the electrode pad, and
the top surface of the solder is lower than or at a same level as a top surface of a highest prevention portion among the one or more prevention portions.
18 . The electronic device of claim 17 , wherein
the one or more prevention portions comprise a first prevention portion formed on a first external electrode on the first surface of the ceramic main body and a second prevention portion formed on a second external electrode on the second surface of the ceramic main body, and
the first prevention portion and the second prevention portion are formed to be parallel to each other at a same level.