CDBQC40-HF

Overview

The CDBQC40-HF is a surface-mount Schottky barrier rectifier manufactured by Comchip Technology. It features a single silicon epitaxial planar chip configuration housed in an SOD-923F-2 package, also designated as 0402C. The device supports a maximum repetitive reverse voltage (Vrrm) of 40 V and an average forward current (If) of 200 mA. Key electrical parameters include a maximum forward voltage drop (Vf) of 500 mV, a peak forward surge current (Ifsm) of 9 A, and a maximum reverse leakage current (Ir) of 40 uA. It operates within a temperature range of -55°C to +150°C.

Feature Summary

• Ultra-low profile surface mount design optimized for board space efficiency
• High-speed switching capability with low forward voltage drop
• Robust surge current handling capacity for transient protection

Applications

• High-frequency rectification in compact consumer electronics
• Power supply input stages requiring low voltage drop
• Reverse polarity protection circuits in portable devices

Procurement Notes

Verify the specific suffix 'HF' indicates halogen-free compliance per manufacturer standards. Confirm the package marking code 'BC' matches the physical component received. Ensure the ordering quantity aligns with the standard reel packaging specifications provided by Comchip Technology distributors.

Selection Notes

Select this component when a 40V rating and 200mA continuous current are sufficient for the application. The SOD-923F-2 footprint is suitable for high-density PCB layouts where standard packages cannot fit. Consider the 150°C junction temperature limit for thermal management in enclosed spaces compared to lower-rated alternatives.

Part Context

This part belongs to Comchip Technology's automotive-grade or high-reliability Schottky diode lineup, indicated by the 'ACDBQC' series naming convention often associated with similar robust variants. It serves as a compact alternative to larger SOD-123 packages while maintaining comparable electrical performance for low-power rectification tasks.

Replacement Considerations

Direct substitutes include other 40V 200mA Schottky diodes in the SOD-923F/0402 package, such as the CDBQC0140L-HF if lower leakage is required, or generic equivalents from other manufacturers offering identical pinout and electrical ratings.