APT2X31D20J

Overview

The APT2X31D20J is a dual parallel Fast Recovery Epitaxial Diode (FRED) module manufactured by Microchip Technology. It features a 200 V reverse voltage rating and a 30 A forward current per leg, housed in an ISOTOP SOT-227-4 package. Key electrical parameters include a maximum forward voltage of 3.1 V, a reverse recovery time of 265 ns, and a surge current capacity of 540 A. The device operates within a temperature range of -55°C to +175°C.

Feature Summary

• Dual parallel configuration for high-current applications
• Fast recovery epitaxial diode technology for efficient switching
• ISOTOP SOT-227-4 package with screw mounting capability

Applications

• High-frequency DC-DC converters
• Induction heating power supplies
• Resonant circuit rectification

Procurement Notes

Verify the specific suffix and revision level against the official Microchip datasheet to ensure compatibility with your design requirements. Confirm that the SOT-227-4 mechanical dimensions match your thermal management and chassis mounting specifications. Check for any recent Product Change Notifications (PCNs) that may affect material composition or testing standards before finalizing procurement.

Selection Notes

Select this component when a dual parallel FRED configuration is required for low-voltage, high-current applications. The 200 V rating suits systems operating below this threshold, while the 30 A per leg capacity supports significant load currents. Consider the 265 ns reverse recovery time for switching frequency limitations and the 3.1 V forward voltage for conduction loss calculations in thermal design.

Part Context

This part belongs to the Microchip ISOTOP discrete semiconductor module family, designed for robust performance in power electronics. The SOT-227-4 package provides a standardized form factor for screw mounting, facilitating integration into industrial and commercial power conversion systems where reliable thermal dissipation and electrical isolation are critical.

Replacement Considerations

Direct substitutes within the same series include APT2X30D40J and APT2X61DQ120J, though these differ significantly in voltage and current ratings. Ensure any replacement matches the 200 V / 30 A specification and SOT-227-4 footprint to maintain system integrity without redesigning the PCB or heatsink interface.