Solid electrolytic capacitor
US8345409B2 · kind B2 · utility
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2References
3Claims
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Key dates
| Filing date | Mar 31, 2010 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Dec 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/0032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a high-voltage solid electrolytic capacitor having a rated voltage of several hundreds of volts. After an anodic oxide film layer is formed on a roughened surface of an aluminum foil by way of a first conversion treatment, a hydrated film is formed by way of boiling water immersion; the hydrated film is provided with a second conversion treatment at a formation voltage lower than that of the first conversion treatment such that an anodic foil is formed; and a conductive polymeric layer is formed on a surface of the anodic foil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.