US PATENT SUBCLASS 257 / 150
.~.~ With specified housing or external terminal

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

107  DF  REGENERATIVE TYPE SWITCHING DEVICE (E.G., SCR, COMFET, THYRISTOR) {19}
147  DF  .~ With extended latchup current level (e.g., gate turn off "GTO" device) {5}
150.~.~ With specified housing or external terminal {1}
151  DF  .~.~.~> External gate terminal structure or composition

DEFINITION

Classification: 257/150

With specified housing or external terminal:

(under subclass 147) Subject matter wherein the regenerative switching device is provided with means to enclose it or a terminal means located external to an enclosure for the device.