MUR1640CT

Overview

The MUR1640CT is an ultrafast recovery rectifier diode manufactured by onsemi, designed for high-frequency switching applications. It features a common cathode configuration with two elements housed in a TO-220 package. The device supports a peak repetitive reverse voltage of 400 V and provides an average rectified forward current of 8.0 A per leg (16 A total). Key electrical characteristics include a maximum instantaneous forward voltage of 1.30 V at 8.0 A and 150°C case temperature, and a maximum reverse current of 500 µA at rated DC voltage and 150°C. The junction-to-case thermal resistance is 3.0 °C/W.

Feature Summary

• Ultrafast recovery time of 35 ns optimized for high-frequency operation
• High operating junction temperature capability up to 175°C
• High surge forward current capacity for robust performance
• Epoxy molding compound meets UL 94 V-0 flammability rating

Applications

• Switching power supplies
• Inverters
• Free wheeling diodes

Procurement Notes

Verify the specific ordering suffix when sourcing this component. The datasheet indicates that the 'G' suffix denotes a lead-free package. Confirm whether the required unit includes this suffix or if it represents a discontinued variant. Ensure the procurement matches the exact part number specifications to avoid compatibility issues with the intended circuit design.

Selection Notes

Select this component for circuits requiring fast recovery times and high voltage blocking capabilities. Consider the thermal management requirements given the 3.0 °C/W junction-to-case resistance. Evaluate the current derating curves for both case and ambient temperatures to ensure reliable operation under expected load conditions and environmental constraints.

Part Context

This device belongs to the MUR series of ultrafast rectifiers from onsemi, which also includes variants like MUR1620CT and MUR1660CT. These components share similar mechanical and electrical architectures but differ in their voltage ratings. The series is engineered for efficiency in power conversion systems where rapid switching and low leakage are critical.

Replacement Considerations

MUR1640CTG