Title:
電解コンデンサ
Document Type and Number:
Japanese Patent JP7329986
Kind Code:
B2
Abstract:
To provide an electrolytic capacitor having a configuration that achieves a low impedance by increasing the content of water, satisfies a withstand voltage of 400 V or more, and is capable of enhancing the long-term reliability. Provided as a solution is an electrolytic capacitor (1) including an electrolytic solution (2e) containing ethylene glycol, 10 to 30% by mass of water, and 1 to 12% by mass of an amine salt of a carboxylic acid, having added thereto 0.01 to 2% by mass of one or more kind of ammonium hypophosphite, an amine salt of hypophosphorous acid, and hypophosphorous acid, the carboxylic acid being a polycarboxylic acid having a chain hydrocarbon skeleton and a molecular weight of 140 to 500.
Inventors:
Yosuke Nozawa
Application Number:
JP2019118448A
Publication Date:
August 21, 2023
Filing Date:
June 26, 2019
Export Citation:
Assignee:
Rubycon Corporation
International Classes:
H01G9/035; H01G9/145
Domestic Patent References:
| JP2005039245A | ||||
| JP2005019773A | ||||
| JP57034326A | ||||
| JP6151251A | ||||
| JP62008004B1 |
Attorney, Agent or Firm:
Watanuki International Patent & Trademark Office