CDBQC00340-HF

Overview

The CDBQC00340-HF is a small signal Schottky barrier rectifier manufactured by Comchip Technology. It features a single diode configuration housed in an SOD-923F (0402C) surface-mount package. The device is constructed using silicon epitaxial planar technology with a metal-silicon junction. Key electrical parameters include a maximum repetitive reverse voltage of 45 V and a forward current of 30 mA. The typical forward voltage drop is 370 mV at the rated current, while the reverse leakage current is limited to 1 uA. The component supports a forward surge current of 0.5 A and operates within a temperature range of -55°C to +150°C.

Feature Summary

• Ultra-low profile SOD-923F package designed for space-constrained surface-mount applications
• Metal-silicon junction construction enabling ultra-high-speed switching capabilities
• Low forward voltage drop characteristics for improved power efficiency
• High surge current capability providing robust protection against transient overvoltages

Applications

• DC-DC converter output rectification
• Power supply freewheeling diodes
• Reverse polarity protection circuits
• Clamping diodes in low-voltage logic interfaces

Procurement Notes

Verify the specific ordering suffix and packaging format when sourcing, as availability may vary between cut tape and reel quantities. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer prior to finalizing procurement plans. Ensure the selected variant matches the required voltage and current ratings for the target application.

Selection Notes

Select this component for designs requiring minimal board space due to its compact 0402 footprint. It is suitable for low-current applications where a 45 V reverse voltage rating provides adequate margin. Consider the 30 mA continuous forward current limit when sizing for load requirements. The high operating temperature range makes it appropriate for environments with thermal constraints.

Part Context

This part belongs to Comchip Technology's small signal Schottky diode portfolio, which emphasizes low-profile packages and high-efficiency switching. The series utilizes silicon epitaxial planar chips to ensure consistent performance and reliability. These components are engineered to replace larger through-hole or standard SMD diodes in modern miniaturized electronic devices.

Replacement Considerations

Direct replacements must match the SOD-923F package, 45 V reverse voltage, and 30 mA forward current specifications. Verify that substitute parts offer comparable forward voltage and reverse leakage characteristics to maintain circuit efficiency.