Method of making a self protected thyristor

Details Method of making a self protected thyristor Method of making a self protected thyristor

1983-02-18

1985-05-07

Hearn, Brian E.

Metal working

Method of mechanical manufacture

Assembling or joining

29580, 29583, 357 20, 357 38, 148187, H01L 21223, H01L 21302, H01L 2974

Patent

active

045148988

ABSTRACT:
The present invention is directed to a thyristor self-protected against overvoltage by the avalanche mechanism, the protection resulting from a laser scribed ring shaped groove cut in the top surface of the thyristor and extending into one base region of the thyristor whereby the forward blocking junction is contoured toward the reverse blocking junction under the ring shaped groove, and to the process for making the thyristor.

REFERENCES:
patent: 4047219 (1977-09-01), Temple
Przybysz, J. X. et al., "Thyristors with Overvoltage Self-Protection" in 1981 International Electron Device Meeting Technical Digest, pp. 410-413.

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