IRFAF40

Single FETs, MOSFETs Overview

The IRFAF40 is a single N-channel hermetic MOSFET manufactured by International Rectifier. It features a TO-204AA (TO-3) package designed for through-hole mounting. The device operates with a drain-source voltage of 900V and a continuous drain current of 4.3A at case temperature. Thermal performance includes a power dissipation rating of 125W at case temperature, with an operating junction temperature range from -55°C to 150°C.

Single FETs, MOSFETs Feature Summary

• Hermetically sealed construction for high reliability
• N-channel HEXFET technology
• Through-hole mounting capability

Single FETs, MOSFETs Applications

• High voltage switching applications
• Industrial power control systems
• Military and aerospace electronics

Single FETs, MOSFETs Procurement Notes

Verify the specific datasheet version and manufacturer documentation to confirm exact electrical characteristics and mechanical dimensions. Ensure compatibility with existing thermal management solutions and mounting hardware requirements before integration into final designs.

Single FETs, MOSFETs Selection Notes

Select this component for applications requiring high voltage isolation and hermetic sealing. Consider the 900V rating and 4.3A current capacity against circuit demands. Evaluate thermal resistance values for heat sink design to maintain junction temperatures within specified limits during operation.

Single FETs, MOSFETs Part Context

This part belongs to the International Rectifier HEXFET family of power transistors. These devices are known for robust performance in demanding environments. The TO-204AA package provides a standardized form factor for legacy and high-reliability industrial designs requiring metal can packaging.

Single FETs, MOSFETs Replacement Considerations

Consult official substitution guides for equivalent N-channel MOSFETs with matching voltage and current ratings. Verify pinout compatibility and thermal characteristics when considering alternative manufacturers or updated series replacements.