| STT1 - UJT - Unijunction Transistor PNP | | 2N2646, 2N4871 | 30V, Ip<4?A, Iv>7mA |
| BSV56A - UJT - Unijunction Transistor PNP | | 2N2646, 2N4871 | 35V, Ip<6?A, Iv>4mA |
| 2SH16(A) - UJT - Unijunction Transistor PNP | | 2N2646P | 30V, 50mA, Ip<12?A, Iv>4mA |
| 2N4871 - UJT - Unijunction Transistor PNP | | 2N2646 | =2N4870, Iv>4mA |
| 2N4871 - UJT - Unijunction Transistor PNP | | 2N2646 | =2N4870, Iv>4mA |
| 2N3484 - UJT - Unijunction Transistor PNP | | 2N2646, 2N4871 | =2N3479, Ip<5?A |
| 2N3483 - UJT - Unijunction Transistor PNP | | 2N2646, 2N4871 | =2N3479, Ip<5?A |
| 2N2646P - UJT - Unijunction Transistor PNP | | - | Ip<12?A, Iv>4mA |
| 2N2646 - UJT - Unijunction Transistor PNP | | 2N4871 | Ip<5?A, Iv>4mA |