12CWQ20FN

Overview

The 12CWQ20FN is a surface-mount Schottky rectifier diode array manufactured by SMC Diode Solutions. It features a common cathode configuration with two independent diodes housed in a TO-252-3 (DPAK) package. The device is rated for a maximum repetitive peak reverse voltage of 20 V and offers an average forward current capacity of 12 A. Key electrical characteristics include a low forward voltage drop and high-frequency operation capabilities, making it suitable for power supply applications requiring efficient rectification.

Feature Summary

• Surface mountable design with small footprint
• Low forward voltage drop for improved efficiency
• High frequency operation capability
• Guard ring structure for enhanced ruggedness

Applications

• DC-DC converters
• Free-wheeling diodes in switching power supplies
• Polarity protection circuits
• General purpose rectification in consumer electronics

Procurement Notes

Verify the specific datasheet version before ordering, as manufacturers may update specifications over time. Confirm that the TO-252-3 package dimensions match your PCB layout requirements. Ensure that the thermal management strategy accounts for the 12 A current rating and junction temperature limits specified in the official documentation to guarantee reliable long-term operation under load conditions.

Selection Notes

Select this component when a dual Schottky configuration with common cathode topology is required in a compact surface-mount form factor. The 20 V reverse voltage rating suits low-voltage DC systems. Consider the low forward voltage characteristic for minimizing conduction losses. Verify compatibility with automated pick-and-place assembly processes due to the DPAK package style.

Part Context

This part belongs to the 12CWQ series of Schottky barrier rectifiers from SMC Diode Solutions. The series includes variants with different voltage ratings such as 4V, 30V, and 100V options, all sharing similar current handling and package characteristics. The 'FN' suffix typically denotes the specific package type and pin configuration within this product line.

Replacement Considerations

Direct replacements must match the 12 A current, 20 V reverse voltage, and TO-252-3 package. Check equivalent parts from other manufacturers like Vishay or ON Semiconductor that offer identical electrical parameters and pinout configurations to ensure functional interchangeability without redesigning the circuit board.