80CNQ040S2

Overview

The SMC Diode Solutions 80CNQ040S2 is a Schottky rectifier module in the PRM2 package. It features a maximum repetitive reverse voltage of 40 V and an average rectified forward current of 40 A per leg, totaling 80 A per device. The junction temperature range spans from -55 °C to +150 °C. Electrical characteristics include a typical forward voltage drop of 0.53 V at 40 A and 0.64 V at 80 A (TJ = 25 °C). Reverse leakage current is typically 0.2 mA at rated voltage and 25 °C.

Feature Summary

• Center tap module configuration with very low forward voltage drop for high frequency operation
• High purity, high temperature epoxy encapsulation providing enhanced mechanical strength and moisture resistance
• Guard ring design incorporated for enhanced ruggedness and long term reliability

Applications

• Switching power supply
• Converters
• Free-Wheeling diodes
• Reverse battery protection

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm terminal finish and base plate specifications. The 'S2' designation indicates pure tin dipped terminals with a height of 6-8 mm on a nickel plated base plate. Confirm that the procurement matches the exact datasheet revision required for the application.

Selection Notes

Select this component when a center tap Schottky rectifier with a 40 V rating and 40 A per leg capacity is required. Ensure the thermal management system can handle the specified thermal resistance values. Verify that the operating environment stays within the -55 °C to +150 °C junction temperature limits.

Part Context

This part belongs to the 80CNQ series of Schottky rectifiers manufactured by SMC Diode Solutions. The series includes variants with different voltage ratings such as 35 V and 45 V, available in multiple package styles including PRM2, PRM2-SL, and PRM2-SM. All parts are lead-free devices traceable to the wafer lot.

Replacement Considerations

Datasheets do not list confirmed substitute part numbers for the 80CNQ040S2. Evaluate other 80CNQ series modules or equivalent center tap Schottky rectifiers based on matching electrical parameters and physical dimensions.

FAQ

What is the peak one cycle non-repetitive surge current capability?

The peak one cycle non-repetitive surge current is 900 A per leg, measured under an 8.3 ms half sine pulse condition.

Does the 80CNQ040S2 support avalanche energy conditions?

Yes, it supports a non-repetitive avalanche energy of 54 mJ per leg at TJ=25°C with IAS=8A and L=1.7mH.

What is the typical junction capacitance value?

The typical junction capacitance per leg is 2166 pF, measured at VR = 5V, TC = 25 °C, and fSIG = 1MHz.