| Manufacturer | Part Number | Description |
|---|---|---|
| SMMBF4391LT1G | JFET Switching Transistors | |
Motorola Semiconductor (now NXP Semiconductors) |
MMBF4391LT1 | JFET Switching Transistors |
| MMBF4391L | JFET Switching Transistors | |
| MMBF4391LT1G | JFET Switching Transistors |