BD681 Transistor Datasheet & Specifications
NPNTO-126General Purpose
VCEO
100V
Ic Max
4A
Pd Max
40W
Gain
750
Quick Reference
The BD681 is a NPN bipolar transistor in a TO-126 package. This datasheet provides complete specifications including 100V breakdown voltage and 4A continuous collector current. Download the BD681 datasheet PDF below for detailed pinout diagrams and application circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | YFW | Original Manufacturer |
| Package | TO-126 | Physical mounting |
| VCEO | 100V | Breakdown voltage |
| IC Max | 4A | Collector current |
| Pd Max | 40W | Power dissipation |
| Gain | 750 | DC current gain |
| Frequency | - | Transition speed |
| VCEsat | 2.5V@1.5A,30mA | Saturation voltage |
| Vebo | - | Emitter-Base voltage |
| Temp | -55℃~+150℃ | Operating temp |
Direct Replacements & Alternatives
| Part | Type | Package | VCEO | Ic | Pd |
|---|---|---|---|---|---|
| BD140 | PNP | TO-126 | 80V | 1.5A | 1.25W |
| BD237STU-HXY | NPN | TO-126 | 100V | 15A | 1W |
| BD139 | NPN | TO-126 | 80V | 1.5A | 12.5W |
| KTD600K-Y-U/PH | NPN | TO-126 | 120V | 1A | 1.5W |
| BD441 | NPN | TO-126 | 80V | 4A | 25W |
| BD139-16 | NPN | TO-126 | 80V | 1.5A | 12.5W |
| MJE182 | NPN | TO-126 | 80V | 3A | 12.5W |
| BD681 | NPN | TO-126 | 100V | 4A | 40W |
| BD13916STU-HXY | NPN | TO-126 | 80V | 1.5A | 1W |