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 | DF | .~.~ With specified housing or external terminal {1} |
151 | .~.~.~ External gate terminal structure or composition |