CDBA140LR-HF

Overview

The CDBA140LR-HF is a Schottky barrier rectifier manufactured by Comchip Technology. It features an average forward current of 1 A and a maximum repetitive peak reverse voltage of 40 V. The device utilizes a low VF (forward voltage) design to minimize power loss and improve efficiency. It is housed in a surface-mount package, specifically the SOD-323FL form factor, which is optimized for small board space applications. The component is constructed using silicon epitaxial planar chips with metal-silicon junctions, ensuring high reliability and surge capability.

Feature Summary

• Low forward voltage drop for enhanced energy efficiency
• Ultra-fast switching speed suitable for high-frequency circuits
• Guarding against overvoltage conditions via robust reverse leakage characteristics
• Leadless surface mount design for compact PCB integration

Applications

• DC-DC converter output rectification
• Power supply freewheeling diodes
• Reverse polarity protection circuits
• Clamping and flyback diode applications

Procurement Notes

Verify the specific suffix 'LR' against the official Comchip Technology datasheet to confirm the exact package variant and tape-and-reel specifications. Ensure compliance with RoHS directives as indicated by the 'HF' suffix. Cross-reference the manufacturer's part number directly with authorized distributors to avoid counterfeit components. Confirm storage and handling requirements regarding moisture sensitivity levels prior to assembly.

Selection Notes

Select this component when a low-profile surface-mount Schottky rectifier is required for 40V applications with 1A continuous current needs. The low forward voltage characteristic makes it suitable for low-voltage, high-efficiency power conversion designs. Consider the thermal performance and package size constraints relative to standard SOD-323 packages. Evaluate the surge current capability against potential transient loads in the target circuit design.

Part Context

This component belongs to the Comchip Technology CDBA series of Schottky Barrier Rectifiers. The series is characterized by its low profile and high efficiency, designed for modern electronics requiring minimal footprint. The CDBA140LR-HF specifically targets applications where space is limited but reliable rectification at moderate currents is essential. It represents a shift towards leadless or reduced-lead packages within the broader diode portfolio.

Replacement Considerations

Potential substitutes include other 1A 40V Schottky diodes in SOD-323 or similar low-profile packages from manufacturers such as Taiwan Semiconductor or Vishay. Verify that replacement parts match the forward voltage drop and reverse leakage current specifications. Ensure the alternative component supports the same operating temperature range and packaging format for direct board compatibility.