This document is a technical datasheet for the MMST4401, an NPN small signal surface mount transistor manufactured by Transys Electronics Limited. The device utilizes an epitaxial planar die construction and is available in an ultra-small SOT-323 molded plastic package.
The datasheet provides comprehensive mechanical data including terminal connections and dimensions, along with maximum ratings such as collector-base voltage of 60V and continuous collector current of 600mA. It also details electrical characteristics for both OFF and ON states, small signal parameters like current gain-bandwidth product up to 250 MHz, and switching characteristics.
| Package Type | SOT-323, Molded Plastic |
|---|---|
| Collector-Base Voltage | 60 V |
| Collector-Emitter Voltage | 40 V |
| Continuous Collector Current | 600 mA |
| Power Dissipation | 200 mW |
| Current Gain-Bandwidth Product | 250 MHz |
The maximum continuous collector current is rated at 600 mA.
The device operates and stores within a range of -55 to +150 C.
The maximum power dissipation is 200 mW.