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} |
281 | .~.~.~ Schottky gate to silicon semiconductor |