APTDF400AA120G

Overview

APTDF400AA120G is a high-voltage power diode module manufactured by Microchip Technology. It features a common anode configuration with two diodes housed in an LP4 base mount package. The device supports a maximum DC reverse voltage of 1200 V and provides an average rectified current of 470 A per diode. Key electrical characteristics include a forward voltage of 3 V at 400 A, a reverse leakage current of 250 µA at 1200 V, and a reverse recovery time of 385 ns. The module utilizes standard silicon technology.

Feature Summary

• Common anode dual diode configuration for efficient power conversion
• High current handling capability suitable for heavy-duty industrial applications
• Fast recovery characteristics to minimize switching losses
• Robust screw-mount design for secure thermal management

Applications

• Industrial motor drives and variable frequency drives
• High-power DC-DC converters
• Uninterruptible power supply (UPS) systems
• Welding equipment power stages

Procurement Notes

Verify the specific suffix 'AA' against the official Microchip datasheet to confirm pinout and terminal compatibility. Ensure the ordering quantity aligns with manufacturer minimums. Confirm RoHS compliance status as indicated in the latest product documentation before finalizing procurement orders.

Selection Notes

Select this component when a common anode topology is required for high-current rectification. The 1200 V rating suits medium-voltage AC-DC conversion systems. Evaluate thermal resistance requirements against the LP4 package capabilities. Compare reverse recovery speed specifications with circuit switching frequencies to ensure optimal efficiency.

Part Context

This part belongs to Microchip's high-voltage discrete and power modules portfolio. It complements IGBT modules like the APTGT series within complete power conversion solutions. The LP4 package format allows integration into standardized heatsink assemblies used in industrial power electronics.

Replacement Considerations

Consult official substitution guides for equivalent common anode diode arrays. Verify that any alternative maintains the 1200 V blocking voltage and 470 A current rating. Ensure physical footprint and terminal configuration match the existing PCB or busbar layout.