| 257 / | HD | ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) |
| 607 | DF | WITH SPECIFIED DOPANT (E.G., PLURAL DOPANTS OF SAME CONDUCTIVITY IN SAME REGION) {3} |
| 610 | DF | .~ Deep level dopant {2} |
| 612 | ![]() | .~.~ Deep level dopant other than gold or platinum |