80CNQ035SM

Overview

The 80CNQ035SM is a Schottky diode array manufactured by SMC Diode Solutions, featuring a common cathode configuration with two diodes. It is designed for high-efficiency rectification in power supply applications. The device utilizes the PRM2-SM package and supports through-hole mounting. Key electrical specifications include a maximum repetitive peak reverse voltage of 35 V and an average forward rectified current of 80 A per diode. The forward voltage drop is specified at 740 mV when conducting 80 A. The component operates within a junction temperature range of -55°C to 175°C and exhibits a reverse leakage current of 5 mA at 35 V.

Feature Summary

• Schottky barrier technology ensures low forward voltage drop and minimal switching losses.
• Common cathode dual-diode arrangement simplifies circuit design for full-wave rectification.
• High thermal stability allows reliable operation across a wide temperature range.

Applications

• DC-DC converter output rectification
• Free-wheeling diodes in inductive load circuits
• Power supply input rectification

Procurement Notes

Verify the exact suffix against the manufacturer datasheet to confirm pinout compatibility and thermal pad requirements. Ensure the procurement source provides official RoHS compliance documentation. Cross-reference the PRM2-SM package dimensions with your PCB footprint library before ordering to prevent assembly errors.

Selection Notes

Select this component when low forward voltage drop is critical for system efficiency at high currents. The 35 V rating suits low-voltage DC bus applications. Verify that the 80 A current capability meets the peak load requirements. Consider the PRM2-SM package size constraints during mechanical layout planning.

Part Context

This part belongs to the 80CNQ series of high-current Schottky rectifiers from SMC Diode Solutions. The series is engineered for robust performance in demanding power electronics environments. The specific model integrates two diodes into a single module, reducing board space compared to discrete components.

Replacement Considerations

Check for direct substitutes within the same series offering identical voltage and current ratings. Verify that any alternative maintains the same PRM2-SM package outline and pin configuration to ensure mechanical interchangeability without redesigning the PCB.

FAQ

What is the maximum operating junction temperature?

The maximum operating junction temperature is 175°C.

Is this component suitable for synchronous rectification replacement?

Yes, its low forward voltage drop makes it suitable for replacing MOSFETs in synchronous rectifier designs where simplicity and cost are prioritized over absolute minimum loss.

How is the thermal performance managed in the PRM2-SM package?

Thermal management relies on the exposed metal tab soldered directly to the PCB copper pour, which acts as a heat sink to dissipate power generated during operation.