Flat electrolytic capacitor

Details Flat electrolytic capacitor Flat electrolytic capacitor

1997-12-24

2000-09-12

Kincaid, Kristine

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

361519, 361504, 361528, H01G 9035, H01G 908

Patent

active

061186511

ABSTRACT:
Anodized aluminum anode and cathode foils are interleaved in a stack separated by spacers saturated with electrolyte in an enclosure. The anode foils and cathode foils have tabs which protrude from the housing and are cold welded to leads outside the housing, where they are not exposed to electrolyte. This permits using copper leads, which can be soldered to traces on a printed circuit board. A flat capacitor can be fixed underneath a PCB or even used as the substrate for a circuit, resulting in high volume efficiencies and the possibility of using it as a heat sink for other components.

REFERENCES:
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patent: 2021455 (1935-11-01), Lilienfeld
patent: 3518500 (1970-06-01), Jimerson et al.
patent: 3611051 (1971-10-01), Puppolo et al.
patent: 4933605 (1990-06-01), Quazi et al.
patent: 4937718 (1990-06-01), Murray
patent: 5164635 (1992-11-01), De Jong et al.
patent: 5194127 (1993-03-01), Endoh et al.
patent: 5198967 (1993-03-01), Kuranuki et al.
patent: 5245253 (1993-09-01), Quazi
patent: 5629581 (1997-05-01), Belle et al.
patent: 5703440 (1997-12-01), Kackmarik et al.
patent: 5834899 (1998-11-01), Lovell et al.
patent: 5914852 (1999-06-01), Hatanaka et al.

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