| Manufacturer | Part Number | Description |
|---|---|---|
VPT Components
| 2N4449 | High-Speed Switching Transistor |
Microsemi (now Microchip Technology)
| 2N4449 | NPN SILICON SWITCHING TRANSISTOR |
|
Microsemi (now Microchip Technology)
| 2N4449U | NPN SILICON SWITCHING TRANSISTOR |
|
Microsemi (now Microchip Technology)
| 2N4449UB | NPN SILICON SWITCHING TRANSISTOR |
Motorola Semiconductor (now NXP Semiconductors)
| 2N4449 | NPN SIlicon Small-Signal Transistor |
|
Microsemi (now Microchip Technology)
| 2N4449UA | NPN SILICON SWITCHING TRANSISTOR |
