US 12,462,978 B2
Multilayer ceramic capacitor
Keita Kitahara, Nagaokakyo (JP); Riyousuke Akazawa, Nagaokakyo (JP); and Takefumi Takahashi, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Dec. 15, 2022, as Appl. No. 18/081,744.
Claims priority of application No. 2021-208468 (JP), filed on Dec. 22, 2021.
Prior Publication US 2023/0197339 A1, Jun. 22, 2023
Int. Cl. H01G 4/008 (2006.01); H01G 4/012 (2006.01); H01G 4/12 (2006.01); H01G 4/30 (2006.01)
CPC H01G 4/008 (2013.01) [H01G 4/012 (2013.01); H01G 4/12 (2013.01); H01G 4/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multilayer ceramic capacitor comprising:
a multilayer body including a plurality of internal electrode layers and a plurality of internal dielectric layers alternatively laminated therein, main surfaces on both sides in a lamination direction, end surfaces on both sides in a length direction intersecting the lamination direction, and lateral surfaces on both sides in a width direction intersecting the lamination direction and the length direction; and
two external electrodes on the end surfaces of the multilayer body; wherein
the two external electrodes each include:
a base electrode layer including a Cu region including Cu as a main component and a glass region including Si as a main component; and
a Cu-plated layer outside the base electrode layer;
the glass region of the base electrode layer includes a Cu-including glass region including Cu; and
the Cu-including glass region including Cu is a region into which the Cu-plated layer penetrates.