| Manufacturer | Part Number | Description |
|---|---|---|
NTE Electronics (defunct)
| 2N4923 | Silicon NPN Transistor |
Motorola Semiconductor (now NXP Semiconductors)
| 2N4923 | MEDIUM-POWER PLASTIC NPN SILICON TRANSISTORS |
| 2N4923 | 1 AMPERE GENERAL PURPOSE POWER TRANSISTORS | |
SavantIC
| 2N4921 | (2N4921 - 2N4923) Silicon NPN Power Transistors |
SavantIC
| 2N4922 | (2N4921 - 2N4923) Silicon NPN Power Transistors |
SavantIC
| 2N4923 | (2N4921 - 2N4923) Silicon NPN Power Transistors |
| 2N4923G | NPN Transistor |