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} |
268 | DF | .~.~ Enhancement mode {1} |
269 | .~.~.~ With means to adjust barrier height (e.g., doping profile) |