| 2N1778A | Central Semiconductor | Leaded Thyristor SCR |
| 2N1889 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1890 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1893 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1893 | STMicroelectronics | SMALL SIGNAL NPN TRANSISTOR |
| 2N1893A | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1973 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1974 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1975 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1983 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1984 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1985 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1986 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1987 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1988 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1989 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1990 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N1991 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N2017 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |
| 2N2049 | Central Semiconductor | Leaded Small Signal Transistor General Purpose |