BC546B Datasheet & Equivalents
NPN
TO-92
General Purpose
LGE
VCEO
65V
Ic Max
100mA
Pd Max
625mW
hFE Gain
200
Quick Reference
The BC546B is a NPN bipolar junction transistor in a TO-92 package, manufactured by LGE. It supports a breakdown voltage of 65V and continuous collector current of 100mA. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | LGE | Original Manufacturer |
| Package | TO-92 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 65V | Max breakdown voltage |
| Collector Current (Ic) | 100mA | Max current handling |
| Power Dissipation (Pd) | 625mW | Max thermal limit |
| DC Current Gain (hFE) | 200 | Base signal amplification ratio |
| Transition Frequency (fT) | 150MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 300mV | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 6V | Max emitter-base breakdown |
| Collector Cutoff Current | 100nA | Leakage current when OFF |
| Operating Temp | - | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| BC546BBK | NPN | TO-92 | 65V | 100mA | 200 | 500mW | DIOTEC 📄 PDF |
| BC546ABU | NPN | TO-92 | 65V | 100mA | 110 | 500mW | onsemi 📄 PDF |
| BC546BTF | NPN | TO-92 | 65V | 100mA | 110 | 500mW | onsemi 📄 PDF |
| 2SC2240 | NPN | TO-92 | 120V | 100mA | 200 | 300mW | BLUE ROCKET 📄 PDF |
| 2SC2240-G | NPN | TO-92 | 120V | 100mA | 700 | 300mW | YFW 📄 PDF |
| 2N5551 | NPN | TO-92 | 160V | 100mA | 250 | 625mW | YFW 📄 PDF |