Accession Number : AD0847732

Title :   50 Ampere Turn-Off Switch.

Descriptive Note : Quarterly rept. no. 3, 15 May-15 Aug 68,

Corporate Author : WESTINGHOUSE ELECTRIC CORP YOUNGWOOD PA SEMICONDUCTOR DIV

Personal Author(s) : New, Thorndike C. ; Desmond, Timothy J.

Report Date : 15 AUG 1968

Pagination or Media Count : 24

Abstract : The subject of the report is the developmental work performed on a 50 ampere, gate controlled switch. Effort was continued on refinement of the basic process and structural design. Several basic modifications in the process were made. They include the use of a Ga-sealed tube diffusion, the introduction of a P+ layer, and modification of the mask pattern details. In addition, the gold diffusion schedule was adjusted based on the gate characteristics. A few samples were completely encapsulated and the tester previously breadboarded was completely built in a console permitting comprehensive evaluation. (Author)

Descriptors :   (*ELECTRIC SWITCHES, PERFORMANCE(ENGINEERING)), GATES(CIRCUITS), ENCAPSULATION, BORON, GOLD, DIFFUSION, GALLIUM, TEST METHODS, VOLTAGE, MANUFACTURING, MICROSCOPY, TRIGGER CIRCUITS, SWITCHING CIRCUITS, SILICON CONTROLLED RECTIFIERS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE