90SQ040

Overview

The SDUR540 is a standard recovery rectifier diode manufactured by SMC Diode Solutions. It features a maximum repetitive peak reverse voltage of 400 V and a forward current rating of 5 A. The device exhibits a typical forward voltage drop of 1.3 V at 5 A and a maximum reverse leakage current of 30 µA at 400 V. Its reverse recovery time is specified as 45 ns, classifying it as a fast recovery diode with a switching speed of less than or equal to 500 ns. The component operates within a junction temperature range of -55°C to 150°C and is housed in a TO-220AC through-hole package.

Feature Summary

• Fast recovery performance with a 45 ns reverse recovery time for efficient switching applications
• High thermal stability supporting operation up to a 150°C junction temperature
• Robust mechanical construction utilizing a TO-220AC through-hole package

Applications

• General purpose rectification in power supplies
• Free-wheeling diodes in inductive load circuits
• DC-DC converter output stages

Procurement Notes

Verify the exact part number against official manufacturer documentation to ensure compatibility with specific circuit requirements. Confirm that the TO-220AC package dimensions align with your PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to your manufacturing process. Ensure the 400V voltage rating provides sufficient margin for your application's peak inverse voltage conditions.

Selection Notes

Select this component when a standard fast-recovery diode is required for moderate current applications up to 5 A. The 400V rating makes it suitable for low-to-medium voltage AC-DC conversion systems. Consider the TO-220AC package for designs requiring through-hole mounting and potential heatsinking capabilities. Evaluate the 1.3V forward voltage drop against efficiency requirements compared to Schottky alternatives for lower voltage drops.

Part Context

This component belongs to the SDUR series of fast recovery rectifiers from SMC Diode Solutions. The series is designed for general-purpose rectification where faster switching speeds are beneficial compared to standard slow-recovery diodes. The SDUR540 specifically targets applications requiring reliable performance at 400V reverse voltage levels.

Replacement Considerations

Consult official substitution guides for verified equivalents. Generic replacements must match the 400V reverse voltage, 5A forward current, and TO-220AC package form factor.