TIP121 Transistor Datasheet & Specifications
NPNTO-220-3General Purpose
VCEO
80V
Ic Max
5A
Pd Max
2W
Gain
1000
Quick Reference
The TIP121 is a NPN bipolar transistor in a TO-220-3 package. This datasheet provides complete specifications including 80V breakdown voltage and 5A continuous collector current. Download the TIP121 datasheet PDF below for detailed pinout diagrams and application circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | ST | Original Manufacturer |
| Package | TO-220-3 | Physical mounting |
| VCEO | 80V | Breakdown voltage |
| IC Max | 5A | Collector current |
| Pd Max | 2W | Power dissipation |
| Gain | 1000 | DC current gain |
| Frequency | - | Transition speed |
| VCEsat | 4V | Saturation voltage |
| Vebo | - | Emitter-Base voltage |
| Temp | - | Operating temp |
Direct Replacements & Alternatives
| Part | Type | Package | VCEO | Ic | Pd |
|---|---|---|---|---|---|
| TIP41C255 | NPN | TO-220-3 | 100V | 1.5A | 1W |