APT2X31DQ120J

Overview

The Microchip Technology APT2X31DQ120J is an ultrafast soft recovery rectifier diode housed in a dual die ISOTOP SOT-227 package. It features a maximum DC reverse voltage of 1200 V and a maximum average forward current of 30 A at a case temperature of 89°C with a 0.5 duty cycle. The device exhibits a typical forward voltage of 3.1 V at 30 A and a maximum reverse leakage current of 100 µA at 125°C. Key dynamic characteristics include a reverse recovery time of up to 360 ns and a reverse recovery charge of up to 380 nC under specified test conditions.

Feature Summary

• Ultrafast recovery times combined with soft recovery characteristics for low noise switching
• Avalanche energy rated capability for increased system reliability
• Low forward voltage and low leakage current for reduced losses and cooler operation
• Popular SOT-227 ISOTOP package design for high power density

Applications

• Anti-parallel diode in switchmode power supplies and inverters
• Free wheeling diode in motor controllers and converters
• Snubber diode applications
• Uninterruptible Power Supply (UPS) systems
• Induction heating circuits

Procurement Notes

Verify the specific part number suffix against official Microchip documentation to confirm exact electrical tolerances and packaging variations. Ensure thermal management designs account for the junction-to-case thermal resistance and maximum operating temperature limits defined in the datasheet. Confirm RoHS compliance status through the manufacturer's latest environmental declarations before final procurement.

Selection Notes

Select this component for high-frequency switching applications requiring fast recovery and low reverse recovery charge. The dual parallel configuration allows for efficient current handling in bridge or freewheeling topologies. Consider the avalanche energy rating for robust protection against transient overvoltages. Evaluate thermal performance based on the specified junction-to-case thermal resistance and maximum average forward current derating curves.

Part Context

This component belongs to the Microchip APT2x3xDQ120J series, which includes similar variants like the APT2x30DQ120J. These devices are designed as ultrafast soft recovery rectifiers utilizing silicon technology. The ISOTOP package provides a standardized mounting solution for high-power discrete semiconductor applications, facilitating heat dissipation through the mounting base.

Replacement Considerations

Direct substitutes within the same series include the APT2x30DQ120J. Verify pinout compatibility and ensure that alternative components meet or exceed the 1200 V reverse voltage and 30 A forward current requirements. Check dynamic parameters such as reverse recovery time and charge to maintain circuit performance integrity.