MMBT5551 Datasheet & Equivalents
NPN
SOT-23
General Purpose
Chao He
VCEO
120V
Ic Max
600mA
Pd Max
300mW
hFE Gain
-
Quick Reference
The MMBT5551 is a NPN bipolar junction transistor in a SOT-23 package, manufactured by Chao He. It supports a breakdown voltage of 120V and continuous collector current of 600mA. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | Chao He | Original Manufacturer |
| Package | SOT-23 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 120V | Max breakdown voltage |
| Collector Current (Ic) | 600mA | Max current handling |
| Power Dissipation (Pd) | 300mW | Max thermal limit |
| DC Current Gain (hFE) | - | Base signal amplification ratio |
| Transition Frequency (fT) | 300MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 300mV@50mA,5mA | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 6V | Max emitter-base breakdown |
| Collector Cutoff Current | 50nA | Leakage current when OFF |
| Operating Temp | -55℃~+150℃ | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| FMMT494QTA | NPN | SOT-23 | 120V | 1A | 60 | 500mW | DIODES 📄 PDF |
| BCX41TA | NPN | SOT-23 | 125V | 800mA | 63 | 403mW | DIODES 📄 PDF |
| FMMT624TA | NPN | SOT-23 | 125V | 1A | 100 | 625mW | DIODES 📄 PDF |
| MMBT5550LT1G | NPN | SOT-23 | 140V | 600mA | 60 | 225mW | onsemi 📄 PDF |
| MMBT5551-6AF | NPN | SOT-23 | 150V | 600mA | 300 | 300mW | FOSAN 📄 PDF |
| FMMT625TA | NPN | SOT-23 | 150V | 1A | 30 | 625mW | DIODES 📄 PDF |
| FMMT495TA | NPN | SOT-23 | 150V | 1A | 50 | 500mW | DIODES 📄 PDF |
| FMMT495TC | NPN | SOT-23 | 150V | 1A | 50 | 500mW | DIODES 📄 PDF |
| FMMT495 | NPN | SOT-23 | 150V | 1A | 50 | 500mW | DIODES 📄 PDF |
| FMMT495 | NPN | SOT-23 | 150V | 1A | 100 | 250mW | JSCJ 📄 PDF |
| FMMT455TA-HXY | NPN | SOT-23 | 150V | 1A | 300 | 250mW | HXY MOSFET 📄 PDF |
| FMMT494TA-HXY | NPN | SOT-23 | 150V | 1A | 300 | 250mW | HXY MOSFET 📄 PDF |
| FMMT624TA-HXY | NPN | SOT-23 | 150V | 1A | 300 | 250mW | HXY MOSFET 📄 PDF |
| FMMT495 | NPN | SOT-23 | 150V | 1A | 300 | 250mW | MSKSEMI 📄 PDF |
| 2N5551 | NPN | SOT-23 | 160V | 600mA | - | 300mW | GOODWORK 📄 PDF |
| 2N5551S-RTK/P | NPN | SOT-23 | 160V | 600mA | 80 | 350mW | KEC 📄 PDF |
| LMBT5551LT1G | NPN | SOT-23 | 160V | 600mA | 80 | 225mW | LRC 📄 PDF |
| MMBT5551-AU_R1_000A2 | NPN | SOT-23 | 160V | 600mA | 80 | 250mW | PANJIT 📄 PDF |
| MMBT5551LT1G | NPN | SOT-23 | 160V | 600mA | 80 | 300mW | onsemi 📄 PDF |
| SMMBT5551LT1G | NPN | SOT-23 | 160V | 600mA | 80 | 300mW | onsemi 📄 PDF |