MMSTA42 Datasheet & Equivalents
NPN
SOT-323
General Purpose
JSCJ
VCEO
300V
Ic Max
200mA
Pd Max
300mW
hFE Gain
60
Quick Reference
The MMSTA42 is a NPN bipolar junction transistor in a SOT-323 package, manufactured by JSCJ. It supports a breakdown voltage of 300V and continuous collector current of 200mA. It is widely used in switching and amplification circuits.
Technical Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | JSCJ | Original Manufacturer |
| Package | SOT-323 | Physical mounting |
| Transistor Type | BJT | Bipolar Junction Transistor |
| Category | Single | Configuration |
| Collector-Emitter Voltage (VCEO) | 300V | Max breakdown voltage |
| Collector Current (Ic) | 200mA | Max current handling |
| Power Dissipation (Pd) | 300mW | Max thermal limit |
| DC Current Gain (hFE) | 60 | Base signal amplification ratio |
| Transition Frequency (fT) | 50MHz | Max operating frequency |
| Saturation Voltage (VCEsat) | 200mV | Voltage drop when fully ON |
| Emitter-Base Voltage (Vebo) | 5V | Max emitter-base breakdown |
| Collector Cutoff Current | 250nA | Leakage current when OFF |
| Operating Temp | -55℃~+150℃ | Safe junction temperature range |
Equivalent Transistors & Alternatives
| Part | Type | Package | VCEO | IC | hFE | Pd | Manufacturer / Datasheet |
|---|---|---|---|---|---|---|---|
| MMSTA42-7-F | NPN | SOT-323 | 300V | 200mA | 40 | 200mW | DIODES 📄 PDF |