MUR1040CT

Overview

The MUR1040CT is a super fast recovery rectifier manufactured by Good-Ark Semiconductor, featuring FRED planar wafer construction. It provides a maximum repetitive peak reverse voltage of 400 V and a maximum average forward rectified current of 10 A per diode at a case temperature of 105°C. The device exhibits a maximum instantaneous forward voltage of 1.40 V at 25°C and 1.30 V at 125°C when conducting 10 A. Its maximum reverse recovery time is 35 ns under specified test conditions. The component supports a peak forward surge current of 125 A and operates within a junction temperature range of -55 to +150°C.

Feature Summary

• FRED planar wafer construction for enhanced reliability
• Low forward voltage drop and low power losses
• High efficiency operation capabilities
• Plastic package with UL flammability classification 94V-0

Applications

• High frequency switching power supplies
• Free wheeling diodes in inductive circuits
• Polarity protection applications
• DC-DC converter output rectification

Procurement Notes

Verify the specific package variant required for your design, as the datasheet distinguishes between TO-220-AB (MUR1040CT) and ITO-220-AB (MUR1040FCT). Confirm thermal resistance values align with your heat dissipation calculations, noting the difference in junction-to-case resistance between the two packages. Ensure compliance with RoHS standards if applicable to your manufacturing process.

Selection Notes

Select this component for applications requiring fast recovery times around 35 ns and high current handling up to 10 A. Consider the thermal resistance characteristics when designing heatsinking solutions, particularly distinguishing between the standard and isolated tab variants. Evaluate the forward voltage drop at expected operating temperatures to ensure efficiency targets are met in your power conversion circuit.

Part Context

This part belongs to the MUR series of super fast recovery rectifiers from Good-Ark Semiconductor. These devices are designed for general purpose rectification in high frequency applications. The series typically includes various voltage ratings while maintaining similar current capabilities and recovery time specifications, allowing for flexible design choices across different power supply architectures.

Replacement Considerations

Cross-reference with other manufacturers' MUR1040 equivalents such as those from ON Semiconductor or Vishay. Verify pinout compatibility and thermal performance metrics before substitution. Ensure the replacement device meets the same 400V reverse voltage and 10A current requirements.

FAQ

What is the difference between MUR1040CT and MUR1040FCT?

The primary difference is the package type. MUR1040CT uses a standard TO-220-AB package, while MUR1040FCT uses an ITO-220-AB package which features an isolated tab for easier mounting on heatsinks without electrical insulation requirements.

What is the maximum reverse recovery time for this diode?

The maximum reverse recovery time (Trr) is 35 ns, measured under conditions of IF=0.5 Amp, IR=1.0 Amp, and Irec=0.25 Amp.

How does the forward voltage change with temperature?

The maximum instantaneous forward voltage decreases as temperature increases. It is specified as 1.40 V at a case temperature of 25°C and drops to 1.30 V at a case temperature of 125°C when conducting 10 A.