CDBQR43-HF

Overview

The CDBQR43-HF is a surface-mount Schottky barrier diode manufactured by Comchip Technology. It features a 30 V reverse voltage rating and a 200 mA average forward current capability. The device utilizes a compact 0402/SOD-923F package, designed for space-constrained applications. Key electrical specifications include a maximum non-repetitive peak forward surge current of 4 A and a reverse leakage current of 500 nA. The component supports a maximum operating temperature of +125 °C and is constructed using silicon epitaxial planar chip technology with a metal-silicon junction.

Feature Summary

• Ultra-low profile SMD package design suitable for high-density PCB layouts
• High-efficiency switching characteristics with low forward voltage drop
• Robust surge current handling capability for transient protection
• Lead-free construction compliant with environmental standards

Applications

• DC-DC converter input/output rectification
• Power supply freewheeling diodes
• Reverse polarity protection circuits
• Clamping diodes in signal processing paths

Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant matches the design requirements. Confirm that the component status aligns with long-term availability needs, as some listings indicate end-of-life or last-time-buy statuses. Ensure the manufacturer documentation is sourced directly from Comchip Technology or authorized distributors to validate authenticity and technical accuracy before integration into production schedules.

Selection Notes

Select this component when board space is limited due to its 0402 footprint. Choose based on the 30 V reverse voltage requirement and 200 mA current load. Consider the thermal management capabilities relative to the small package size. Verify compatibility with automated pick-and-place equipment given the small form factor. Ensure the operating temperature range meets the environmental conditions of the final application.

Part Context

This part belongs to the CDBQR series of low-profile Schottky barrier rectifiers from Comchip Technology. The series is engineered for high efficiency and low power loss in compact electronic devices. The CDBQR43-HF specifically targets applications requiring reliable rectification in minimal space, leveraging advanced silicon epitaxial planar technology for consistent performance across varying thermal conditions.

Replacement Considerations

Direct substitutes must match the 30 V reverse voltage, 200 mA forward current, and 0402/SOD-923F package dimensions. Verify equivalent forward voltage drop and reverse leakage current specifications. Ensure the replacement component maintains similar surge current ratings and thermal resistance characteristics to preserve circuit reliability and performance integrity.