IXTH44N25L2

Single FETs, MOSFETs Overview

The Littelfuse IXTH44N25L2 is an N-channel enhancement mode linear power MOSFET featuring extended forward-bias safe operating area (FBSOA). It provides a drain-source voltage of 250V and a continuous drain current of 44A at 25°C case temperature. The device exhibits a maximum on-resistance of 75mΩ at VGS=10V. Key electrical characteristics include a gate threshold voltage range of 2.5V to 4.5V, total gate charge of 256nC, and integrated gate input resistance of 3.3Ω. Thermal performance includes a junction-to-case thermal resistance of 0.31°C/W.

Single FETs, MOSFETs Feature Summary

• Designed specifically for linear operation with guaranteed FBSOA at 75°C
• Avalanche rated for robust transient energy handling
• Integrated gate input resistor simplifies driver circuit design

Single FETs, MOSFETs Applications

• Solid state circuit breakers
• Soft start controls
• Linear amplifiers
• Programmable loads
• Current regulators

Single FETs, MOSFETs Procurement Notes

Verify the specific package variant required, as the datasheet covers both TO-247 (IXTH) and TO-268HV (IXTT) packages. Confirm that the component meets all necessary safety certifications for the intended application environment. Ensure proper thermal management solutions are selected based on the specified thermal resistance values to maintain junction temperatures within the -55°C to +150°C operating range during linear mode operation.

Single FETs, MOSFETs Selection Notes

Select this component when high-voltage linear regulation or precise current control is required. The extended FBSOA makes it suitable for applications where the device operates in the active region rather than purely switching. Consider the 75mΩ on-resistance for conduction loss calculations and the 44A current rating for load capacity. The integrated gate resistor aids in stability but affects switching speed compared to discrete gate drive configurations.

Single FETs, MOSFETs Part Context

This part belongs to the IXYS L2 series of linear power MOSFETs, now distributed by Littelfuse. The series is engineered for high-power density and ease of mounting in international standard packages. These devices bridge the gap between standard switching MOSFETs and specialized linear regulators, offering enhanced ruggedness for demanding analog power applications.

Single FETs, MOSFETs Replacement Considerations

The datasheet lists IXTT44N25L2HV as a related part number with a different package (TO-268HV). Verify pinout compatibility and thermal interface requirements before substituting between the TO-247 and TO-268HV packages.

Single FETs, MOSFETs FAQ

What is the purpose of the integrated gate input resistor?

The integrated 3.3Ω gate input resistor helps dampen ringing and improves stability in high-speed switching or linear applications by reducing the impact of external parasitic inductance.

Is this MOSFET rated for avalanche energy?

Yes, the IXTH44N25L2 is explicitly avalanche rated, allowing it to handle repetitive avalanche energy events safely.