| 2SA1968LS | Sanyo | Dynamic Focus Application Transistors |
| 2SA1969 | Sanyo | High-Frequency Transistors |
| 2SA1979 | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1979M | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1979S | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1979SF | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1979U | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1979UF | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1980 | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1980E | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1980EF | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1980M | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1980S | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1980SF | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1980U | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1980UF | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1981 | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1981S | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1981SF | AUK | Small Signal TR > Small Signal Bipolar TR |
| 2SA1982 | Panasonic | Small-signal device - Small-signal transistor - General-use Low-Frequency Amplifires |