BD139 Transistor Datasheet & Specifications
NPN
TO-126
High Power
ST
VCEO
80V
Ic Max
1.5A
Pd Max
12.5W
hFE Gain
63
Quick Reference
The BD139 is a NPN bipolar transistor in a TO-126 package by ST. This datasheet provides complete specifications including 80V breakdown voltage and 1.5A continuous collector current. Download the BD139 datasheet PDF above for detailed pinout diagrams and application circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | ST | Original Manufacturer |
| Package | TO-126 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| VCEO | 80V | Breakdown voltage |
| Ic | 1.5A | Collector current |
| Pd | 12.5W | Power dissipation |
| DC Current Gain | 63 | hFE / Beta |
| Frequency | - | Transition speed (fT) |
| VCEsat | 500mV | Saturation voltage |
| Vebo | 5V | Emitter-Base voltage |
| Cutoff Current | 10uA | Leakage (ICBO) |
| Temp | -65℃~+150℃ | Operating temp |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | Ic | Pd |
|---|---|---|---|---|---|
| ST13003-K-HXY | NPN | TO-126 | 500V | 1.5A | 1.25W |
| KSE13003-AS-HXY | NPN | TO-126 | 500V | 1.5A | 1.25W |
| BD140 | NPN | TO-126 | 80V | 1.5A | 1W |
| BD237STU-HXY | NPN | TO-126 | 100V | 15A | 1W |
| 3DD4242DM-126 | NPN | TO-126 | 400V | 1.5A | 20W |
| 13003 | NPN | TO-126 | 400V | 2A | 30W |
| YFW13003 | NPN | TO-126 | 480V | 1.5A | 1.25W |
| TTC004B,Q | NPN | TO-126 | 160V | 1.5A | 1.5W |
| BD681 | NPN | TO-126 | 100V | 4A | 2W |
| 3DD4244DM | NPN | TO-126 | 400V | 3A | 60W |