MMST3904 Datasheet & Equivalents
NPN
SOT-323
General Purpose
R+O
VCEO
40V
Ic Max
200mA
Pd Max
200mW
hFE Gain
40
Quick Reference
The MMST3904 is a NPN bipolar junction transistor in a SOT-323 package, manufactured by R+O. It supports a breakdown voltage of 40V and continuous collector current of 200mA. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | R+O | Original Manufacturer |
| Package | SOT-323 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 40V | Max breakdown voltage |
| Collector Current (Ic) | 200mA | Max current handling |
| Power Dissipation (Pd) | 200mW | Max thermal limit |
| DC Current Gain (hFE) | 40 | Base signal amplification ratio |
| Transition Frequency (fT) | 300MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 300mV | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 5V | Max emitter-base breakdown |
| Collector Cutoff Current | 60nA | Leakage current when OFF |
| Operating Temp | -55℃~+150℃ | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| LMBT3904WT1G | NPN | SOT-323 | 40V | 200mA | 40 | 150mW | LRC 📄 PDF |
| MMBT3904WT1G | NPN | SOT-323 | 40V | 200mA | 40 | 150mW | onsemi 📄 PDF |
| SMMBT3904WT1G | NPN | SOT-323 | 40V | 200mA | 40 | 150mW | onsemi 📄 PDF |
| MMST3904-7-F | NPN | SOT-323 | 40V | 200mA | 100 | 200mW | DIODES 📄 PDF |
| MMST3904-TP | NPN | SOT-323 | 40V | 200mA | 100 | 200mW | MCC 📄 PDF |
| PMST3904 | NPN | SOT-323 | 40V | 200mA | 100 | 200mW | Nexperia 📄 PDF |
| 115 | NPN | SOT-323 | 40V | 200mA | 100 | 200mW | amsem 📄 PDF |
| MMBT3904W | NPN | SOT-323 | 40V | 200mA | 300 | 200mW | HXY MOSFET 📄 PDF |
| 2SC4098T106P-HXY | NPN | SOT-323 | 40V | 200mA | 300 | 200mW | HXY MOSFET 📄 PDF |
| CMST3904TR-HXY | NPN | SOT-323 | 40V | 200mA | 300 | 150mW | HXY MOSFET 📄 PDF |
| HMMBT3904WT1G | NPN | SOT-323 | 40V | 200mA | 300 | 200mW | HXY MOSFET 📄 PDF |
| PMST3904-HXY | NPN | SOT-323 | 40V | 200mA | 300 | 200mW | XCH 📄 PDF |
| MMBT3904W | NPN | SOT-323 | 40V | 200mA | 300 | 200mW | GOODWORK 📄 PDF |
| MMBT3904W | NPN | SOT-323 | 40V | 200mA | 300 | 200mW | YFW 📄 PDF |
| MMBT3904W | NPN | SOT-323 | 40V | 200mA | 300 | 200mW | YONGYUTAI 📄 PDF |
| MMBT3904W | NPN | SOT-323 | 45V | 500mA | 100 | 290mW | Nexperia 📄 PDF |
| BC817W | NPN | SOT-323 | 45V | 500mA | 160 | 200mW | Nexperia 📄 PDF |
| 115 | NPN | SOT-323 | 45V | 500mA | 170 | 200mW | DIODES 📄 PDF |
| BC817-25W | NPN | SOT-323 | 45V | 500mA | 600 | 200mW | MSKSEMI 📄 PDF |
| 115 | NPN | SOT-323 | 45V | 500mA | 600 | 290mW | Nexperia 📄 PDF |