Title:
SOLID ELECTROLYTIC CAPACITOR AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3228323
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a conductive polymer compound layer having high heat resistance.
SOLUTION: In a solid electrolytic capacitor containing a conductive polymer compound formed by chemical oxidation polymerization as a solid electrolyte, the thickness of a conductive polymer compound layer 4 at a center of a capacitor element is at least 0.02 μm or more, and a thickness of the layer 4 at a center of the element and thickness of the layer 4 near the outer surface of the element are within 0.08 μm. Thus, the internal layer 4 tending to be formed thin in a conventional method does not become an insulator by heat at the time of heating test, and ESR deterioration of the capacitor at the time of heating test at 125°C is prevented.
Inventors:
Atsushi Kobayashi
Kenji Araki
Takashi Fukami
Kenji Araki
Takashi Fukami
Application Number:
JP24538997A
Publication Date:
November 12, 2001
Filing Date:
September 10, 1997
Export Citation:
Assignee:
NEC
International Classes:
H01G9/028; H01G9/00; H01G9/02; H01G9/025; (IPC1-7): H01G9/028; H01G9/00
Domestic Patent References:
| JP9306788A | ||||
| JP1167602A |
Attorney, Agent or Firm:
Nobuyuki Kaneda (2 others)