MUR440SH

Single Diodes Overview

The MUR440SH is a silicon ultrafast recovery rectifier manufactured by Taiwan Semiconductor Corporation. It is designed for high-efficiency switching applications requiring fast reverse recovery characteristics. The device features a standard current rating of 4 Amperes and a maximum repetitive peak reverse voltage of 400 Volts. It is housed in the SMC (DO-214AB) surface-mount package, which provides robust mechanical stability and efficient thermal dissipation capabilities for compact circuit designs.

Single Diodes Feature Summary

• Ultrafast recovery time optimized for high-frequency switching efficiency
• Low forward voltage drop to minimize conduction losses
• High surge current capability for transient protection
• Surface-mount construction for automated assembly

Single Diodes Applications

• High-frequency DC/DC converters
• Free-wheeling diodes in PWM circuits
• Polarity protection circuits
• Snubber circuits in power supplies

Single Diodes Procurement Notes

Verify the specific suffix code on the component marking against the manufacturer's official datasheet to confirm exact electrical tolerances and packaging specifications. Ensure the part number matches the required voltage and current ratings for the target application before procurement.

Single Diodes Selection Notes

Select this component when a surface-mount solution is required for 4A applications with 400V blocking capability. Consider the thermal resistance of the SMC package and the PCB copper area available for heat dissipation to ensure reliable operation under continuous load conditions.

Single Diodes Part Context

This component belongs to the MUR series of ultrafast recovery rectifiers from Taiwan Semiconductor. These devices are engineered to replace slower standard recovery diodes in modern power electronics, offering improved efficiency and reduced electromagnetic interference due to their rapid switching characteristics.

Single Diodes Replacement Considerations

Compatible substitutes include the MUR440S V7G and MUR440S R6G. Verify that alternative parts match the 4A current rating, 400V reverse voltage, and DO-214AB package dimensions to ensure physical and electrical compatibility.