AUIRFS8408

Single FETs, MOSFETs Overview

The AUIRFS8408 is an automotive-grade N-channel HEXFET power MOSFET manufactured by Infineon Technologies. It features a 40V drain-to-source breakdown voltage and a typical on-resistance of 1.3mΩ, with a maximum rating of 1.6mΩ. The device supports a continuous drain current of 195A when package-limited and up to 317A when silicon-limited. It utilizes the CoolIRFet technology for low switching losses and high efficiency. The component is qualified under AEC-Q101 standards and operates within a junction temperature range of -55°C to +175°C.

Single FETs, MOSFETs Feature Summary

• Automotive qualification compliant with AEC-Q101 standards
• CoolIRFet technology enabling low on-resistance and fast switching
• High thermal performance supporting operation up to 175°C junction temperature
• Robust avalanche characteristics allowing repetitive avalanche energy handling

Single FETs, MOSFETs Applications

• Electric Power Steering (EPS)
• Battery Switch circuits
• Start/Stop Micro Hybrid systems
• DC-DC Converters

Single FETs, MOSFETs Procurement Notes

Verify the specific ordering suffix to confirm the packaging format, as the base part number corresponds to tube packaging while TRL and TRR suffixes indicate tape and reel options. Confirm RoHS compliance status through official documentation before integration. Ensure the selected variant matches the required supply chain quantity constraints and lead time requirements for the target production volume.

Single FETs, MOSFETs Selection Notes

Select this component for applications requiring high current handling in a compact D2PAK or TO-262 footprint. Evaluate the thermal resistance parameters against the system's heat dissipation capabilities to ensure reliable operation at elevated temperatures. Consider the gate charge specifications when designing the driver circuitry to optimize switching speed and minimize power loss during transitions.

Single FETs, MOSFETs Part Context

This device belongs to the AUIRFS series of automotive power MOSFETs from Infineon Technologies. It is designed using advanced silicon processes to achieve low specific on-resistance per unit area. The product line targets demanding automotive environments where reliability and thermal stability are critical for long-term performance and safety.

Single FETs, MOSFETs Replacement Considerations

Check for direct substitutes such as the AUIRFSL8408 which shares identical electrical specifications but utilizes a TO-262 package instead of the D2PAK form factor. Verify pinout compatibility and thermal pad dimensions before substituting to ensure mechanical fit.