CDBQR42-HF

Overview

The CDBQR42-HF is a single Schottky barrier rectifier manufactured by Comchip Technology. It features a silicon epitaxial planar chip construction with a metal-silicon junction. The device is rated for a maximum repetitive peak reverse voltage of 40V and an average forward rectified current of 1A. It utilizes the TO-269AA surface-mount package, designed for low-profile applications to optimize board space while maintaining high efficiency and low power loss characteristics.

Feature Summary

• Ultra-high-speed switching capability for efficient power conversion
• Low forward voltage drop to minimize power loss and heat generation
• Guarding against overvoltage conditions via robust surge capability
• Lead-free construction compliant with environmental standards

Applications

• Low profile surface mounted power supply circuits
• DC-DC converter output rectification
• Free-wheeling diode applications in inductive loads
• Polarity protection in portable electronic devices

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's latest datasheet before procurement. Confirm RoHS compliance status and lead-free certification requirements with the supplier. Ensure the TO-269AA footprint matches the design layout. Check for any recent product discontinuance notices or engineering change orders that may affect availability or specifications.

Selection Notes

Select this component for designs requiring a compact Schottky rectifier with 1A current handling and 40V blocking voltage. The TO-269AA package offers a balance between thermal performance and board space efficiency. Consider the low forward voltage characteristic for improving overall system efficiency in low-voltage applications. Verify thermal management needs based on the expected operating current and ambient temperature conditions.

Part Context

This part belongs to the Comchip Technology Schottky Barrier Rectifier series, which emphasizes batch process design for consistent electrical performance. The series targets applications where low profile packaging and high efficiency are critical. These rectifiers utilize silicon epitaxial planar technology to ensure reliable operation under various thermal and electrical stresses common in modern consumer and industrial electronics.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical parameter equivalence for any cross-reference.