Semiconductor rectifier assembly having an insulating material t

Details Semiconductor rectifier assembly having an insulating material t Semiconductor rectifier assembly having an insulating material t

1977-04-11

1978-07-04

James, Andrew J.

357 74, 357 79, 357 81, H01L 2328, H01L 2302, H01L 2312

Patent

active

040992012

ABSTRACT:
A semiconductor rectifier assembly comprises first and second electroconductive posts having portions between which a semiconductor body is sandwiched under pressure. A sealed housing for the semiconductor body comprises said posts, a hollow cylindrical insulator surrounding said semiconductor body and said post portions, and sealing means at opposite ends of the insulator for respectively forming seals between said posts and the ends of the insulator. The sealing means at one end of the insulator comprises a pair of annular metal flanges joined together at their outer peripheries. One flange is bonded adjacent its inner periphery to the insulator and the other is bonded adjacent its inner periphery to the adjacent post. A thin annular disc of electrical insulating material has a first portion adjacent its outer periphery disposed between said flanges and a second portion located radially inwardly of the first portion extending between the inner periphery of the insulator and the adjacent post. The insulating disc, when exposed to an electric arc, evolves gases that oppose motion of the arc terminal onto the metal flanges, thereby protecting the flanges from being burned through or otherwise perforatd by the arc.

REFERENCES:
patent: 3414433 (1968-12-01), Van Bramer
patent: 3443168 (1969-05-01), Camp
patent: 3513360 (1970-05-01), Andersson
patent: 3581160 (1971-05-01), Piccone
patent: 3654529 (1972-04-01), Lord
patent: 4007477 (1977-02-01), Goodman

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