12CTQ040S

Overview

The 12CTQ040S is a dual common cathode Schottky rectifier manufactured by SMC Diode Solutions. It features two independent internal diodes housed in a single TO-263AB (D2PAK) surface-mount package. The device is engineered for high-efficiency power conversion applications requiring low forward voltage drop and rapid switching characteristics. Key electrical specifications include a maximum repetitive peak reverse voltage of 40V and a total average forward rectified current rating of 12A per diode at specified case temperatures. The component utilizes metal-semiconductor junction technology to minimize power loss and thermal generation during operation.

Feature Summary

• Dual common cathode configuration integrates two separate rectifiers into one compact footprint
• Low forward voltage drop characteristic enhances overall system efficiency
• Fast recovery time supports high-frequency switching operations
• Lead-free construction complies with international environmental directives

Applications

• DC-to-DC converter modules
• Free-wheeling rectification in motor drives
• Power supply output stages
• Reverse polarity protection circuits

Procurement Notes

Verify the specific suffix codes on the ordering information sheet to confirm lead-free status and tape-and-reel packaging options. Ensure the procurement documentation matches the exact part number designation to avoid confusion with similar series variants. Confirm that the supplier provides traceability data consistent with automotive or industrial quality standards if required for your specific assembly process.

Selection Notes

Select this component when space constraints necessitate a dual-diode solution in a D2PAK package. Evaluate the thermal resistance capabilities against your heatsinking strategy, as the 12A rating depends heavily on board copper area and ambient temperature. Compare the forward voltage characteristics against standard PN junctions to quantify efficiency gains in low-voltage, high-current designs.

Part Context

This component belongs to the CTQ series of ultra-fast recovery and Schottky rectifiers from SMC Diode Solutions. The series is designed to replace traditional silicon rectifiers in applications demanding higher speed and lower conduction losses. The TO-263AB package provides robust mechanical stability and efficient heat dissipation pathways for surface-mount assembly processes.

Replacement Considerations

Cross-reference with other manufacturers offering 40V 12A dual Schottky rectifiers in D2DAK packages. Verify pinout compatibility and thermal resistance values before substitution. Ensure the replacement device meets the same reverse leakage current specifications under high-temperature conditions.