1978-03-16
1980-06-10
James, Andrew J.
357 17, 357 30, 357 81, H01L 2302, H01L 2312, H01L 2714
Patent
active
042075874
ABSTRACT:
An hermetically sealed package for a light-triggered thyristor. The thyristor is mounted within the cavity of an insulating body. Cathode and anode pole pieces are mounted on opposite sides of and electrically coupled with the thyristor. Annular flanges are provided to form hermetical seals between the body and pole pieces. A light pipe is mounted in a radially extending slot formed through a face of one pole piece. An inner end of the light pipe is optically coupled with a light-sensitive region of the thyristor. The outer end of the light pipe is mounted within a metal sleeve which radially projects through an opening formed in a side of the body. An hermetical seal is formed between the light pipe and inner end of the sleeve by means of a glass frit in one embodiment, or by means of solder bonded between the sleeve and a metallized region formed about the light pipe in another embodiment. Another hermetical seal is formed by solder which bonds between the metal sleeve and a metallized region formed in the body about the opening. A connector fitting is mounted on an outer end of the sleeve for seating the end of a fiber optic cable which extends from a triggering light source.
REFERENCES:
patent: 3585454 (1971-06-01), Roberts
patent: 3991460 (1976-11-01), Roberts
patent: 4003074 (1977-01-01), Yonezu et al.
patent: 4100562 (1978-07-01), Sugawara et al.
patent: 4110781 (1978-08-01), Konishi et al.
patent: 4119363 (1978-10-01), Camlibel et al.
patent: 4131905 (1978-12-01), Hanes et al.
patent: 4144541 (1979-03-01), Schaefer et al.
Hanes Maurice H.
Lowry, Jr. Lewis R.
Electric Power Research Institute Inc.
James Andrew J.
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