BC817 Transistor Datasheet & Specifications
NPN
SOT-23
General Purpose
ALJ
VCEO
45V
Ic Max
500mA
Pd Max
300mW
hFE Gain
600
Quick Reference
The BC817 is a NPN bipolar transistor in a SOT-23 package by ALJ. This datasheet provides complete specifications including 45V breakdown voltage and 500mA continuous collector current. Download the BC817 datasheet PDF above for detailed pinout diagrams and application circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | ALJ | Original Manufacturer |
| Package | SOT-23 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| VCEO | 45V | Breakdown voltage |
| Ic | 500mA | Collector current |
| Pd | 300mW | Power dissipation |
| DC Current Gain | 600 | hFE / Beta |
| Frequency | 100MHz | Transition speed (fT) |
| VCEsat | 700mV | Saturation voltage |
| Vebo | 5V | Emitter-Base voltage |
| Cutoff Current | 100nA | Leakage (ICBO) |
| Temp | -65℃~+150℃ | Operating temp |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | Ic | Pd |
|---|---|---|---|---|---|
| MMBTA05(RANGE:100-400) | NPN | SOT-23 | 60V | 500mA | 300mW |
| ZXTN2020FTA | NPN | SOT-23 | 100V | 4A | 1.2W |
| BC817-16LT1G | NPN | SOT-23 | 45V | 500mA | 225mW |
| BC817-40LT1G | NPN | SOT-23 | 45V | 500mA | 225mW |
| DN350T05-7 | NPN | SOT-23 | 350V | 500mA | 300mW |
| DNBT8105-7 | NPN | SOT-23 | 60V | 1A | 600mW |
| MMBTA42 | NPN | SOT-23 | 200V | 500mA | 350mW |
| FMMT415TD | NPN | SOT-23 | 100V | 500mA | 500mW |
| FMMT493ATA | NPN | SOT-23 | 60V | 1A | 500mW |
| MMBTA42Q-7-F | NPN | SOT-23 | 300V | 500mA | 300mW |