Claims
- 1. An hermetically sealed package for a light-triggered semiconductor device, comprising the combination of an electrical insulating body having a central cavity, a light-triggered semiconductor device within the cavity, first and second pole pieces positioned within opposite ends of the body and having respective inner pole faces juxtaposed with and electrically coupled to opposite sides of the semiconductor device, means for forming hermetical seals about the first and second pole pieces and respective ends of the body, a glass light pipe having an inner end optically coupled with a light-sensitive region of the semiconductor device and an outer end extending through the body, said outer end adapted to be optically coupled with a light source for triggering said device, a hollow metal sleeve mounted about a portion of the outer end of the light pipe, means for forming an hermetical seal between the light pipe and the sleeve comprising means forming a metallized region about the light pipe along the portion about which the sleeve is mounted, and solder bonded between the metallized region of the light pipe and the sleeve.
- 2. A package as in claim 1 in which the means forming the seal further includes a layer of copper plating about the metallized region of the light pipe with the solder bonded both to the copper plating and to the sleeve.
- 3. A package as in claim 1 in which the sleeve is formed of nickel.
- 4. An hermetically sealed thyristor package including the combination of an annular electrical insulating body, a pair of electrical contacts coaxially mounted within the body in spaced-apart relationship, means forming hermetical seals between the contacts and respective ends of the body, a light-triggered thyristor mounted coaxially between and electrically coupled with the contacts, means forming a passageway through a side of one of the contacts, a light pipe having a radially directed outer end extending along the passageway and through the body, the light pipe having an arcuate inner end abutting a light-sensitive region of the thyristor, a metal sleeve mounted coaxially about the outer end of the light pipe, means forming an hermetical seal between the sleeve and the light pipe comprising a region of metal molecules diffused about the portion of the light pipe on which the sleeve is mounted, a layer of metal plating bonded about the region of diffused metal molecules, and solder bonded between the metal layer and the sleeve, means forming an hermetical seal between the sleeve and the body, a connector fitting mounted about a portion of the sleeve which projects outwardly from the body, said fitting having a socket-shaped end for mounting the end of a fiber optic cable coupled with a triggering light source.
- 5. A thyristor package as in claim 4 which includes means forming a radially extending opening through the body with the sleeve and outer end of the light pipe projecting coaxially through the opening, and the means forming the seal between the sleeve and body includes means forming a zone of metallized material in the body about the opening together with solder seal means in the opening for forming a bond with the metallized material and with the outer surface of the sleeve.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of application Ser. No. 800,706 filed May 26, 1977, now U.S. Pat. No. 4,131,905, entitled Package for Light-Triggered Thyristor.
US Referenced Citations (8)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
800706 |
May 1977 |
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