QRD1430T30

Overview

The Powerex QRD1430T30 is a fast recovery diode module designed for high-speed switching applications. It features an isolated metal baseplate with a 3000 V isolating voltage, enabling secure mounting on common heatsinks. The device supports a repetitive peak reverse blocking voltage of 1400 Volts and delivers an average forward current of 123 Amperes at a case temperature of 80°C. Electrical characteristics include a maximum peak on-state voltage of 3.8 Volts at 300A and a reverse recovery time of 300 ns under specified test conditions.

Feature Summary

• Fast recovery time optimized for high-frequency switching operations
• Isolated metal baseplate construction for safe thermal management
• Low thermal impedance junction-to-case interface
• High voltage isolation capability between circuit and base

Applications

• Switching power supplies
• Inverters
• Choppers
• Welding power supplies
• Free wheeling diode circuits

Procurement Notes

Verify the specific part number suffix against official documentation to confirm exact electrical ratings and pinout configurations. Ensure that mechanical mounting torque specifications are strictly adhered to during installation to prevent damage to the module terminals or baseplate. Confirm compatibility with required thermal interface materials for optimal heat dissipation performance.

Selection Notes

Select this component when designing systems requiring robust fast recovery diodes with integrated isolation capabilities. Evaluate the thermal resistance values against your specific heatsink constraints to ensure junction temperatures remain within the -40 to 150 °C operating range. Consider the surge current capacity and reverse recovery charge parameters for high-stress transient environments.

Part Context

This module belongs to Powerex's QR series of fast recovery diode modules, engineered for industrial power electronics. The series emphasizes reliability in demanding switching environments through advanced semiconductor processing and durable packaging technologies suitable for heavy-duty machinery and power conversion systems.

Replacement Considerations

Consult official cross-reference lists for verified substitutes such as the QRC1430T30 or QRF1430T30 variants within the same product family. Ensure any replacement maintains identical voltage ratings, current capacities, and physical dimensions to guarantee seamless integration without redesigning the host system.

FAQ

What is the maximum isolating voltage for the QRD1430T30?

The module provides a 3000 V isolating voltage between the circuit terminals and the baseplate.

What is the typical reverse recovery time for this diode?

The reverse recovery time is typically 300 ns when tested at 300A with a di/dt of -600A/μs.

Can this module be mounted directly to a common heatsink?

Yes, the isolated metal baseplate design allows for easy mounting with other components on a shared heatsink.