MMBT5551 Datasheet & Equivalents
NPN
SOT-23
General Purpose
amsem
VCEO
60V
Ic Max
600mA
Pd Max
300mW
hFE Gain
300
Quick Reference
The MMBT5551 is a NPN bipolar junction transistor in a SOT-23 package, manufactured by amsem. It supports a breakdown voltage of 60V and continuous collector current of 600mA. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | amsem | Original Manufacturer |
| Package | SOT-23 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 60V | Max breakdown voltage |
| Collector Current (Ic) | 600mA | Max current handling |
| Power Dissipation (Pd) | 300mW | Max thermal limit |
| DC Current Gain (hFE) | 300 | Base signal amplification ratio |
| Transition Frequency (fT) | 300MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 200mV | 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 |
|---|---|---|---|---|---|---|---|
| CMPT3820-HXY | NPN | SOT-23 | 60V | 1A | 300 | 250mW | HXY MOSFET 📄 PDF |
| DNBT8105-7-HXY | NPN | SOT-23 | 60V | 1A | 300 | 250mW | HXY MOSFET 📄 PDF |
| DSS4160TQ-7-HXY | NPN | SOT-23 | 60V | 1A | 300 | 250mW | HXY MOSFET 📄 PDF |
| FMMT451TA-HXY | NPN | SOT-23 | 60V | 1A | 300 | 250mW | HXY MOSFET 📄 PDF |
| FMMT491(RANGE:100-300) | NPN | SOT-23 | 60V | 1A | 300 | 250mW | JSCJ 📄 PDF |
| FMMT491-6AF | NPN | SOT-23 | 60V | 1A | 300 | 250mW | FOSAN 📄 PDF |
| FMMT493ATA | NPN | SOT-23 | 60V | 1A | 300 | 500mW | DIODES 📄 PDF |
| NH491 | NPN | SOT-23 | 60V | 1A | 300 | 500mW | NH 📄 PDF |
| PBSS4160T-HXY | NPN | SOT-23 | 60V | 1A | 300 | 250mW | HXY MOSFET 📄 PDF |
| ZXTN2038FTA-HXY | NPN | SOT-23 | 60V | 1A | 300 | 250mW | HXY MOSFET 📄 PDF |
| FMMT491 | NPN | SOT-23 | 60V | 1A | 300 | 500mW | PJSEMI 📄 PDF |
| FMMT491 | NPN | SOT-23 | 60V | 1A | 300 | 250mW | R+O 📄 PDF |
| FMMT491 | NPN | SOT-23 | 60V | 1A | 300 | 500mW | GOODWORK 📄 PDF |
| PBSS4160T | NPN | SOT-23 | 60V | 1A | 250 | 1.25W | Nexperia 📄 PDF |
| 215 | NPN | SOT-23 | 60V | 1A | 200 | 350mW | UTC 📄 PDF |
| MMBT1616AG-G-AE3-R | NPN | SOT-23 | 60V | 1A | 400 | 400mW | BLUE ROCKET 📄 PDF |
| PBSS4160T | NPN | SOT-23 | 60V | 1A | 200 | 500mW | LGE 📄 PDF |
| FMMT491 | NPN | SOT-23 | 60V | 1A | 100 | 500mW | MCC 📄 PDF |
| FMMT491-TP | NPN | SOT-23 | 60V | 1A | 100 | 350mW | DIODES 📄 PDF |
| ZXTN2038FTA | NPN | SOT-23 | 60V | 1A | 100 | 250mW | BORN 📄 PDF |