Self protected thyristor and method of making

Details Self protected thyristor and method of making Self protected thyristor and method of making

H - Electricity

01

L

356/37

H01L 29/74 (2006.01) H01L 21/268 (2006.01)

Patent

CA 1207086

12 ABSTRACT OF THE DISCLOSURE The present invention is directed to a thyristor self-protected against overvoltage by the avalanche mechan- ism, 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.

447085

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