| Manufacturer | Part Number | Description |
|---|---|---|
NTE Electronics (defunct)
| MJ10015 | Silicon NPN Transistor |
Motorola Semiconductor (now NXP Semiconductors)
| MJ10015 | 50 AMPERE NPN SILICON POWER DARLINGTON TRANSISTORS |
DIGITRON
| MJ10015 | NPN Transistor |
Mospec Semiconductor
| MJ10015 | Power Transistors |
