High voltage spiral resistor

Electrical resistors – Helical or wound resistance element – Flat spiral winding

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Details

338285, 338306, 338307, 357 51, H01C 314

Patent

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050537431

ABSTRACT:
A resistor constituted by a spiral region (4) of a second conductivity type and having a determined doping level, formed on a first surface of a semiconductor substrate (1) of the first conductivity type, having a first terminal on the first surface of the substrate and a second terminal electrically connected to the opposite surface of the substrate through an overdoped region of the same conductivity type as the substrate, more conductive areas (11) being formed at determined places of the spiral.

REFERENCES:
patent: 2775673 (1956-12-01), Johnson
patent: 3955169 (1976-05-01), Kerfoot et al.
patent: 4139833 (1979-02-01), Kirsch
patent: 4792840 (1987-04-01), Nadd
patent: 4803538 (1989-02-01), Voss
patent: 4860083 (1989-08-01), Kojo
"Doppeldiffundierter planarer Halbleiterwiderstand, insbesondere Emitterwiderstand in Hf-Lesitungstransistoren," (no author given), Neues aus der Technik, Nr. 1, Feb. 1, 1973, p. 2.

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