Micrel, Inc. MIC94031BM4TR

The MIC94031 is a 4-terminal P-channel MOSFET in the SOT-143 package, designed for high-side switching in space-constrained applications. It features a typical on-resistance of 0.75Ω at 4.5V gate-to-source voltage and operates down to 2.7V gate drive. The device includes an integrated 500-1000kΩ gate pull-up resistor to reduce external component count. It has a drain-to-source breakdown voltage of 13.5V minimum, continuous drain current of 1A at 25°C, and operates from -55°C to +150°C junction temperature. Thermal resistance is 220°C/W. The SOT-143 package supports a separate substrate connection for improved heat dissipation and analog switching. The part meets RoHS requirements and is listed as AEC-Q200 qualified.