TIP121 Transistor Datasheet & Specifications
NPN
TO-220-3
General Purpose
ST
VCEO
80V
Ic Max
5A
Pd Max
2W
hFE Gain
1000
Quick Reference
The TIP121 is a NPN bipolar transistor in a TO-220-3 package by ST. This datasheet provides complete specifications including 80V breakdown voltage and 5A continuous collector current. Download the TIP121 datasheet PDF above for detailed pinout diagrams and application circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | ST | Original Manufacturer |
| Package | TO-220-3 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| VCEO | 80V | Breakdown voltage |
| Ic | 5A | Collector current |
| Pd | 2W | Power dissipation |
| DC Current Gain | 1000 | hFE / Beta |
| Frequency | - | Transition speed (fT) |
| VCEsat | 4V | Saturation voltage |
| Vebo | - | Emitter-Base voltage |
| Cutoff Current | 200uA | Leakage (ICBO) |
| Temp | - | Operating temp |