BC858B Datasheet & Equivalents
PNP
SOT-23
General Purpose
XCH
VCEO
30V
Ic Max
100mA
Pd Max
300mW
hFE Gain
450
Quick Reference
The BC858B is a PNP bipolar junction transistor in a SOT-23 package, manufactured by XCH. It supports a breakdown voltage of 30V and continuous collector current of 100mA. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | XCH | Original Manufacturer |
| Package | SOT-23 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 30V | Max breakdown voltage |
| Collector Current (Ic) | 100mA | Max current handling |
| Power Dissipation (Pd) | 300mW | Max thermal limit |
| DC Current Gain (hFE) | 450 | Base signal amplification ratio |
| Transition Frequency (fT) | 100MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 650mV | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 5V | Max emitter-base breakdown |
| Collector Cutoff Current | 15nA | Leakage current when OFF |
| Operating Temp | - | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| BC858C | PNP | SOT-23 | 30V | 100mA | 420 | 200mW | Guangdong Hot... 📄 PDF |
| BC859C | PNP | SOT-23 | 30V | 100mA | 420 | 250mW | Nexperia 📄 PDF |
| 215 | PNP | SOT-23 | 30V | 100mA | 420 | 300mW | LRC 📄 PDF |
| LBC858CLT1G | PNP | SOT-23 | 30V | 100mA | 90 | 225mW | onsemi 📄 PDF |
| BC857BLT1G | PNP | SOT-23 | 30V | 100mA | 90 | 225mW | onsemi 📄 PDF |
| BC858ALT1G | PNP | SOT-23 | 30V | 100mA | 90 | 225mW | onsemi 📄 PDF |
| BC858BLT3G | PNP | SOT-23 | 30V | 100mA | 90 | 225mW | onsemi 📄 PDF |
| BC858CLT1G | PNP | SOT-23 | 30V | 100mA | 90 | 225mW | onsemi 📄 PDF |
| BC858CLT3G | PNP | SOT-23 | 30V | 100mA | 90 | 225mW | onsemi 📄 PDF |
| NSVBC858CLT1G | PNP | SOT-23 | 40V | 100mA | 100 | 250mW | LGE 📄 PDF |
| MMBT3906LT1 | PNP | SOT-23 | 40V | 100mA | 100 | 250mW | Nexperia 📄 PDF |
| PMBS3906 | PNP | SOT-23 | 40V | 100mA | 100 | 250mW | LGE 📄 PDF |
| 215 | PNP | SOT-23 | 40V | 200mA | 400 | 300mW | YONGYUTAI 📄 PDF |
| MMBT3906 | PNP | SOT-23 | 40V | 200mA | 300 | 200mW | HXY MOSFET 📄 PDF |
| MMBT3906 | PNP | SOT-23 | 40V | 200mA | 300 | 350mW | KEC 📄 PDF |
| 2N3906S-HXY | PNP | SOT-23 | 40V | 200mA | 300 | 200mW | HXY MOSFET 📄 PDF |
| 2N3906S-RTK/PS | PNP | SOT-23 | 40V | 200mA | 300 | 330mW | PANJIT 📄 PDF |
| BCW29-HXY | PNP | SOT-23 | 40V | 200mA | 300 | 200mW | HXY MOSFET 📄 PDF |
| MMBT3906_R1_00101 | PNP | SOT-23 | 40V | 200mA | 300 | 250mW | HXY MOSFET 📄 PDF |
| MMBT4126LT3G-HXY | PNP | SOT-23 | 40V | 200mA | 300 | 200mW | GOODWORK 📄 PDF |