Thyristor of overvoltage self-protection type

Details Thyristor of overvoltage self-protection type Thyristor of overvoltage self-protection type

1988-04-14

1991-03-26

Hille, Rolf

357 30, H01L 2974, H01L 2714

Patent

active

050033697

ABSTRACT:
A thyristor of the overvoltage self-protection type capable of performing a turn-on operation certainly without being damaged even when an overvoltage is applied across the thyristor is disclosed in which a P-base layer is provided with a recess having such a depth as to generate an avalanche in the vicinity of the bottom of the recess when the overvoltage is applied across the thyristor, and a portion of a P.sup.+ -layer formed on the surface of the recess is kept in contact with an N-emitter layer.

REFERENCES:
patent: 3987476 (1976-10-01), Sittig
patent: 4497109 (1985-02-01), Huber et al.
patent: 4514898 (1985-05-01), Przybysz et al.
patent: 4516315 (1985-05-01), Przybysz et al.

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