US 11,901,126 B2
Multilayer ceramic capacitor
Satoshi Yokomizo, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Apr. 21, 2021, as Appl. No. 17/236,022.
Claims priority of application No. 2020-077296 (JP), filed on Apr. 24, 2020.
Prior Publication US 2021/0335543 A1, Oct. 28, 2021
Int. Cl. H01G 4/012 (2006.01); H01G 2/02 (2006.01); H01G 4/12 (2006.01); H01G 4/30 (2006.01)
CPC H01G 4/012 (2013.01) [H01G 2/02 (2013.01); H01G 4/1209 (2013.01); H01G 4/30 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A multilayer ceramic capacitor comprising:
a capacitor main body; and
an interposer; wherein
the capacitor main body includes:
a multilayer body including dielectric layers and internal electrode layers alternately stacked, a first main surface on one side and a second main surface on the other side in a stacking direction, and a first end surface on one side and a second end surface on the other side in a length direction intersecting the stacking direction;
a first external electrode provided on the first end surface of the multilayer body and extending from the first end surface to a portion of the first main surface and a portion of the second main surface; and
a second external electrode provided on the second end surface of the multilayer body and extending from the second end surface to a portion of the first main surface and a portion of the second main surface;
the interposer is provided at or adjacent to the second main surface of the capacitor main body, and includes a first surface facing the second main surface, and a second surface opposite to the first surface;
the interposer includes, on a side of the first external electrode in the length direction:
a first joining electrode on the first surface, the first joining electrode extending to an end of the interposer in the length direction;
a first mounting electrode on the second surface;
a first through conductive portion that penetrates the interposer in the stacking direction, and provides electrical conduction between the first joining electrode and the first mounting electrode; and
a first conductive joining agent that joins the first external electrode and the first joining electrode in an electrically conductive manner;
the interposer includes, on a side of the second external electrode in the length direction:
a second joining electrode on the first surface, the second joining electrode extending to another end of the interposer in the length direction;
a second mounting electrode on the second surface;
a second through conductive portion that penetrates the interposer in the stacking direction, and provides electrical conduction between the second joining electrode and the second mounting electrode; and
a second conductive joining agent that joins the second external electrode and the second joining electrode in an electrically conductive manner;
when the first main surface is an upper side and the second main surface is a lower side in the stacking direction:
a first joining region that joins the first external electrode and the first conductive joining agent extends over an entire region directly above an end at an upper end of the first through conductive portion on the side of the first external electrode; and
a second joining region that joins the second external electrode and the second conductive joining agent extends over an entire region directly above an end at an upper end of the second through conductive portion on the side of the second external electrode;
the first through conductive portion is provided on an inner wall of a first through hole penetrating the interposer in the stacking direction;
the second through conductive portion is provided on an inner wall of a second through hole penetrating the interposer in the stacking direction;
an interior of the first through hole is filled with the first conductive joining agent; and
an interior of the second through hole is filled with the second conductive joining agent.