MMBTA42 Transistor Datasheet & Specifications
NPN
SOT-23
General Purpose
R+O
VCEO
300V
Ic Max
500mA
Pd Max
350mW
hFE Gain
100
Quick Reference
The MMBTA42 is a NPN bipolar transistor in a SOT-23 package by R+O. This datasheet provides complete specifications including 300V breakdown voltage and 500mA continuous collector current. Download the MMBTA42 datasheet PDF above for detailed pinout diagrams and application circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | R+O | Original Manufacturer |
| Package | SOT-23 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| VCEO | 300V | Breakdown voltage |
| Ic | 500mA | Collector current |
| Pd | 350mW | Power dissipation |
| DC Current Gain | 100 | hFE / Beta |
| Frequency | 50MHz | Transition speed (fT) |
| VCEsat | 200mV | Saturation voltage |
| Vebo | 5V | Emitter-Base voltage |
| Cutoff Current | 100nA | Leakage (ICBO) |
| Temp | -55℃~+150℃ | Operating temp |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | Ic | Pd |
|---|---|---|---|---|---|
| DN350T05-7 | NPN | SOT-23 | 350V | 500mA | 300mW |
| MMBTA42Q-7-F | NPN | SOT-23 | 300V | 500mA | 300mW |
| SMMBTA42LT1G | NPN | SOT-23 | 300V | 500mA | 225mW |
| SMMBTA42LT3G | NPN | SOT-23 | 300V | 500mA | 225mW |
| MMBTA42-7-F | NPN | SOT-23 | 300V | 500mA | 300mW |
| S-MMBTA42LT1G | NPN | SOT-23 | 300V | 500mA | 350mW |
| FMMT497TA | NPN | SOT-23 | 300V | 500mA | 500mW |
| LMBTA42LT1G | NPN | SOT-23 | 300V | 500mA | 225mW |
| MMBTA42 | NPN | SOT-23 | 300V | 500mA | 300mW |
| MMBTA42 | NPN | SOT-23 | 300V | 500mA | 350mW |