FMMT449 NPN Low Saturation Transistor is a high current gain, low saturation voltage NPN transistor from Fairchild. The device has a maximum collector current of 2A continuous and a maximum collector-emitter voltage of 50V.
This document is a technical datasheet for the Fairchild Semiconductor FMMT449, an NPN Low Saturation Transistor packaged in a SuperSOT-3 format. The device is designed with high current gain and features low saturation voltage capabilities suitable for continuous collector currents up to 2A.
The datasheet provides comprehensive electrical characteristics including breakdown voltages, cutoff currents, DC current gains, and saturation voltages under various test conditions. It also lists absolute maximum ratings such as collector-emitter voltage (30V) and operating junction temperature ranges (-55°C to +150°C), along with thermal resistance values.
| Collector-Emitter Voltage (VCEO) | 30 V |
|---|---|
| Collector-Base Voltage (VCBO) | 50 V |
| Emitter-Base Voltage (VEBO) | 5 V |
| Continuous Collector Current | 1 A |
| Peak Pulse Current | 2 A |
| Operating Junction Temperature Range | -55 to +150 °C |
| Total Device Dissipation | 500 mW |
| Thermal Resistance (Junction to Ambient) | 250 °C/W |
The maximum continuous collector current is 1 A.
The device operates and stores within a junction temperature range of -55 to +150 °C.
The collector-emitter breakdown voltage (BVCEO) is 30 V.