257 / | HD | ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) |
213 | DF | FIELD EFFECT DEVICE {6} |
256 | DF | .~ Junction field effect transistor (unipolar transistor) {15} |
280 | DF | .~.~ With Schottky gate {3} |
282 | DF | .~.~.~ Gate closely aligned to source region {1} |
283 | .~.~.~.~ With groove or overhang for alignment |