AUIRFZ44NS

Single FETs, MOSFETs Overview

The AUIRFZ44NS is an automotive-grade N-channel enhancement mode MOSFET from the HEXFET series. It features a maximum drain-source voltage of 55 V and a continuous drain current of 49 A at 25°C. The device exhibits a typical on-resistance of 17.5 mΩ at Vgs = 10 V. Packaged in a surface-mount D2PAK (TO-263) housing with three pins, it supports a junction temperature range from -55°C to +175°C. The component carries AEC-Q101 qualification for automotive reliability.

Single FETs, MOSFETs Feature Summary

• Automotive grade qualification compliant with AEC-Q101 standards
• Advanced HEXFET processing technology for low on-resistance
• Ruggedized design with fast switching capabilities
• Surface mount construction for efficient PCB integration

Single FETs, MOSFETs Applications

• Automotive power distribution systems
• High-side and low-side load switches
• DC motor control circuits
• General purpose switching applications in vehicles

Single FETs, MOSFETs Procurement Notes

Verify the specific suffix Z against official International Rectifier or Infineon documentation to confirm automotive compliance and package variations. Ensure the source document explicitly lists AEC-Q101 certification for this exact part number. Cross-reference datasheet revisions to confirm pinout consistency with standard TO-263 packages before procurement.

Single FETs, MOSFETs Selection Notes

Select this component for designs requiring robust performance in high-temperature automotive environments. The 55 V rating suits 12 V and 24 V vehicle electrical systems. Verify thermal management requirements given the 49 A current capability and 17.5 mΩ resistance. Confirm that the D2PAK footprint matches the target PCB layout constraints.

Single FETs, MOSFETs Part Context

This device belongs to the HEXFET family of power MOSFETs manufactured by International Rectifier, now part of Infineon Technologies. The HEXFET line utilizes advanced silicon processing to minimize resistance per unit area. The AUIRFZ44NS variant specifically targets the automotive sector, offering enhanced reliability compared to standard industrial counterparts while maintaining high efficiency.

Single FETs, MOSFETs Replacement Considerations

Check for IRFZ44NS as a potential non-automotive equivalent. Verify if AUIRF3205S serves as a higher-current alternative within the same voltage class. Confirm package compatibility when substituting with other D2PAK devices.