US 12,217,916 B2
Electronic component and method for manufacturing electronic component
Yasuhiro Tamatani, Nagaokakyo (JP); and Kazuya Kusuda, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Dec. 14, 2022, as Appl. No. 18/065,917.
Application 18/065,917 is a continuation of application No. PCT/JP2021/022437, filed on Jun. 14, 2021.
Claims priority of application No. 2020-103933 (JP), filed on Jun. 16, 2020.
Prior Publication US 2023/0119320 A1, Apr. 20, 2023
Int. Cl. H01G 9/012 (2006.01); H01G 4/232 (2006.01); H01G 9/00 (2006.01); H01G 4/30 (2006.01)
CPC H01G 9/012 (2013.01) [H01G 4/232 (2013.01); H01G 9/0029 (2013.01); H01G 4/30 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electronic component comprising:
a base body which includes a first end surface and a second end surface opposite to each other in a length direction, a first main surface and a second main surface opposite to each other in a thickness direction perpendicular to the length direction, and a first side surface and a second side surface opposite to each other in a width direction perpendicular to the length direction and the thickness direction, a first internal electrode exposed at the first end surface, and a second internal electrode exposed at the second surface;
a first external electrode on the first end surface and connected to the first internal electrode; and
a second external electrode on the second end surface and connected to the second internal electrode,
wherein the first external electrode includes a first resin electrode layer containing a conductive component and a resin component,
the first resin electrode layer of the first external electrode includes a first portion facing a whole surface of the first end surface of the base body,
a first plurality of protrusions are arranged periodically side by side on a surface of the first portion of the first resin electrode layer of the first external electrode, the surface of the first portion being opposite to the first end surface of the base body, and
wherein when viewing a cross section along the length direction and the thickness direction, in the first external electrode, a surface of the first portion of the first resin electrode layer has an arithmetic mean roughness Ra defined by JIS B 0601:2013 of 20 μm to 100 μm.