BD140 Datasheet & Equivalents
PNP
TO-126
General Purpose
ST
VCEO
80V
Ic Max
1.5A
Pd Max
1.25W
hFE Gain
63
Quick Reference
The BD140 is a PNP bipolar junction transistor in a TO-126 package, manufactured by ST. It supports a breakdown voltage of 80V and continuous collector current of 1.5A. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | ST | Original Manufacturer |
| Package | TO-126 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 80V | Max breakdown voltage |
| Collector Current (Ic) | 1.5A | Max current handling |
| Power Dissipation (Pd) | 1.25W | Max thermal limit |
| DC Current Gain (hFE) | 63 | Base signal amplification ratio |
| Transition Frequency (fT) | - | Max operating frequency |
| Saturation Voltage (VCEsat) | 500mV | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 5V | Max emitter-base breakdown |
| Collector Cutoff Current | 100nA | Leakage current when OFF |
| Operating Temp | -65℃~+150℃ | Safe junction temperature range |