MUR420SH

Single Diodes Overview

The MUR420SH is a silicon ultra-fast recovery rectifier manufactured by Taiwan Semiconductor Corporation. It features a peak repetitive reverse voltage of 600 V and a maximum average forward rectified current of 4 A. The device utilizes a surface-mount DO-214AB (SMC) package with a typical reverse recovery time of 50 ns. Electrical characteristics include a maximum forward voltage of 1.25 V at 4 A and a leakage current of 10 µA at 600 V. It operates within a junction temperature range of -55°C to 175°C and holds AEC-Q101 automotive qualification.

Single Diodes Feature Summary

• Automotive-grade reliability certified under the AEC-Q101 standard for robust performance in demanding environments.
• Ultra-fast recovery characteristics enable efficient switching with minimal reverse recovery charge and low electromagnetic interference.
• Surface-mount SMC packaging provides compact footprint solutions suitable for automated assembly processes.

Single Diodes Applications

• High-frequency DC/DC converters
• Free-wheeling diodes in synchronous rectification circuits
• Polarity protection circuits

Single Diodes Procurement Notes

Verify the specific manufacturer designation, as the MUR420SH part number is primarily associated with Taiwan Semiconductor Corporation. Confirm that the component carries the AEC-Q101 automotive qualification if required for the application. Ensure the DO-214AB (SMC) surface-mount package matches the board layout requirements. Cross-reference datasheets to confirm electrical parameters such as the 600 V rating and 50 ns recovery time align with design specifications.

Single Diodes Selection Notes

Select this component when high-voltage blocking capability and fast switching speeds are required in a surface-mount form factor. The 600 V rating suits applications involving higher input voltages or significant voltage spikes. The AEC-Q101 certification makes it suitable for automotive electronics where long-term reliability and thermal stability up to 175°C are critical. Compare against through-hole alternatives if PCB space allows for lower cost options.

Single Diodes Part Context

This component belongs to the MUR series of ultra-fast recovery rectifiers designed for high-efficiency power conversion. The SH suffix typically denotes a specific package variant, in this case, the surface-mount SMC format. This series addresses the need for reduced switching losses and improved thermal management in modern power supply designs compared to standard recovery diodes.

Single Diodes Replacement Considerations

Direct substitutes may include other 600V 4A ultra-fast rectifiers in the DO-214AB package from manufacturers like Vishay or onsemi. Verify that replacement parts meet the same AEC-Q101 automotive grade requirements and maintain equivalent reverse recovery times and thermal characteristics.