Patent
1978-07-17
1980-11-25
James, Andrew J.
357 36, 357 55, H01L 2348, H01L 2944, H01L 2952
Patent
active
042361710
ABSTRACT:
A high power transistor is made on a square chip with an epitaxial base construction. A glass passivated groove surrounds the device and isolates the device from adjacent devices manufactured on the same wafer. The emitter and base are interdigitated in a symmetric pattern which has four symmetrically located square enlarged lead connection regions for receiving emitter connection wires. A square enlarged base connection region is formed at one side of the interdigitated pattern for reception of the base lead. The assembly is then mounted in a housing of a type conventionally used for high power thyristors.
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International Rectifier Corporation
James Andrew J.
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