CDBFR0140R

Overview

The CDBFR0140R is a surface-mount Schottky barrier diode manufactured by Comchip Technology. It features a repetitive peak reverse voltage of 40V and an average forward rectified current rating of 100mA. The device utilizes a SOD-323F (1005 metric) package, designed for small surface mounting applications. Key electrical characteristics include low reverse leakage current and majority carrier conduction, ensuring high efficiency and ultra-high-speed switching capabilities suitable for low-voltage power supply circuits.

Feature Summary

• Low reverse leakage current for improved efficiency
• Ultra-high-speed switching capability
• Majority carrier conduction mechanism
• Designed for small surface-mounted applications

Applications

• Low voltage DC-DC converters
• Power supply rectification
• Protection against polarity reversal
• Clamping applications in small signal circuits

Procurement Notes

Verify the specific suffix (e.g., -HF) to confirm halogen-free status and RoHS compliance as per manufacturer documentation. Confirm the package type matches the design requirement, as variations such as SOD-323F are standard for this series. Cross-reference datasheet revision dates to ensure parameter accuracy. Ensure storage conditions align with semiconductor handling standards to prevent moisture sensitivity issues prior to soldering.

Selection Notes

Select this component when a compact surface-mount solution is required for low-current rectification. The 100mA rating suits small signal applications rather than high-power loads. Consider the SOD-323F footprint for board space optimization. Verify thermal dissipation requirements, as the small package limits power handling compared to larger through-hole alternatives. Ensure the 40V reverse voltage rating exceeds the maximum circuit operating voltage with adequate margin.

Part Context

This part belongs to Comchip Technology's CDBFR series of Schottky barrier rectifiers. These devices are engineered for general-purpose rectification in portable and battery-operated equipment. The series emphasizes low profile and high reliability, utilizing silicon epitaxial planar chip technology. The CDBFR0140R specifically targets applications requiring fast recovery and minimal forward voltage drop in constrained spaces.

Replacement Considerations

Check for direct substitutes within the same voltage and current ratings from other manufacturers. Ensure pinout compatibility if replacing in existing designs. Verify that alternative packages meet the same mechanical constraints. Confirm that thermal performance and reverse leakage specifications are equivalent or superior to maintain circuit integrity.