85CNQ015

Overview

The SMC Diode Solutions 85CNQ015 is a high-current Schottky rectifier module designed for robust power conversion applications. It features a dual common cathode configuration within a PRM2 package, providing a maximum repetitive reverse voltage of 15 V and an average forward current of 40 A per diode, totaling 80 A. The device exhibits a low forward voltage drop of approximately 600 mV at rated current, ensuring high efficiency. Operating with a junction temperature range from -55°C to 125°C, it utilizes fast recovery characteristics suitable for demanding environments.

Feature Summary

• Dual common cathode Schottky structure for efficient center-tap or full-wave rectification
• Low forward voltage drop minimizes conduction losses and thermal generation
• High purity epoxy encapsulation provides enhanced mechanical strength and thermal stability
• Chassis mount design facilitates direct heat sinking for high-power dissipation

Applications

• DC-DC converter modules requiring high current density
• Free-wheeling diodes in motor drive circuits
• Power supply output rectification stages
• Battery charging systems with low voltage requirements

Procurement Notes

Verify the specific suffix designation against the manufacturer datasheet to confirm pinout compatibility and thermal interface specifications. Ensure that the mounting hardware matches the PRM2 case requirements for secure chassis attachment. Confirm that the application circuit operates within the specified 125°C junction temperature limit to maintain reliability and prevent premature failure under continuous load conditions.

Selection Notes

Select this component when system architecture demands a dual common cathode arrangement with high surge current handling capabilities. The low reverse voltage rating makes it suitable only for low-voltage DC distribution networks. Evaluate thermal management solutions carefully, as the non-isolated package requires direct contact with a heatsink. Compare total forward voltage drop against alternative technologies to optimize overall system efficiency and cooling requirements.

Part Context

This part belongs to the CNQ series of high-current Schottky rectifiers from SMC Diode Solutions. The series is characterized by silicon carbide metal Schottky technology, offering superior performance over standard silicon PN junctions. The PRM2 package is a standardized form factor within the family, allowing for consistent mechanical integration across various voltage and current ratings in industrial power electronics designs.

Replacement Considerations

Direct substitutes include the 85CNQ015S2 variant from the same manufacturer. Verify electrical parameters such as reverse leakage current and forward voltage tolerance before substitution. Ensure that any cross-brand replacement maintains identical pin configuration and thermal resistance values to avoid redesigning the PCB or heatsink assembly.