CDBQR42

Overview

The CDBQR42 is a silicon Schottky barrier rectifier diode manufactured by Comchip Technology. It features a single-element configuration with a maximum repetitive peak reverse voltage of 30V and an average forward rectified current of 200mA. The device utilizes a surface-mount 0402 (SOD-923F) package, designed for compact circuit layouts. Key electrical characteristics include a low forward voltage drop and minimal reverse leakage current, ensuring efficient performance in high-speed switching applications.

Feature Summary

• Utilizes majority carrier conduction for fast switching speeds
• Features extremely thin leadless package design for small surface mounting
• Constructed with silicon epitaxial planar chips for stability

Applications

• High-speed switching circuits
• Polarity protection
• Free wheeling diodes in low voltage inverters

Procurement Notes

Verify the specific ordering suffix, such as -HF, to confirm RoHS compliance status. Ensure the selected variant matches the required 0402/SOD-923F package dimensions. Confirm that the 30V rating and 200mA current capacity align with the target circuit requirements before finalizing procurement.

Selection Notes

Select this component for applications requiring minimal footprint due to its 0402 package. The 30V reverse voltage rating suits low-voltage systems. Consider the 200mA current limit when designing power paths. Verify thermal management needs, although the small package limits heat dissipation capabilities compared to larger packages.

Part Context

This part belongs to the CDBQR series of surface mount Schottky diodes from Comchip Technology. The series focuses on providing reliable rectification in space-constrained environments. The CDBQR42 specifically addresses the need for 30V blocking capability in miniature form factors, distinguishing it from higher voltage or higher current variants within the broader product line.

Replacement Considerations

The CDBQR42-HF is a verified equivalent variant offering identical electrical specifications with confirmed halogen-free compliance. Both parts share the same 0402/SOD-923F footprint and pinout, allowing for direct substitution in existing designs without layout modifications.