US 11,915,886 B2
Solid electrolytic capacitor
Toshiyuki Nagai, Kyoto (JP)
Assigned to KYOCERA AVX Components Corporation, Fountain Inn, SC (US)
Appl. No. 17/603,074
Filed by ROHM CO., LTD., Kyoto (JP)
PCT Filed Apr. 22, 2020, PCT No. PCT/JP2020/017282
§ 371(c)(1), (2) Date Oct. 12, 2021,
PCT Pub. No. WO2020/218319, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 2019-084021 (JP), filed on Apr. 25, 2019.
Prior Publication US 2022/0189706 A1, Jun. 16, 2022
Int. Cl. H01G 9/08 (2006.01); H01G 9/10 (2006.01); H01G 9/15 (2006.01); H01G 9/052 (2006.01)
CPC H01G 9/08 (2013.01) [H01G 9/10 (2013.01); H01G 9/15 (2013.01); H01G 9/052 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A solid electrolytic capacitor comprising:
a porous sintered body made of a valve metal;
an anode wire that has a portion extending inside the porous sintered body, and that protrudes from the porous sintered body;
a dielectric layer formed on the porous sintered body;
a solid electrolyte layer formed on the dielectric layer;
a cathode layer formed on the solid electrolyte layer; and
a protective film having at least a portion formed on the cathode layer,
wherein the protective film does not contain Si and includes a polymer that contains a perfluoroalkyl group, wherein the polymer has 6 carbon atoms (C6F13-R) and a thermal decomposition temperature of 200° C. to 300° C.