CDBF0340-HF

Overview

The CDBF0340-HF is a Surface Mount Device (SMD) Schottky Barrier Diode manufactured by Comchip Technology. It features an average forward current of 3 Amperes and a repetitive peak reverse voltage of 40 Volts. The device utilizes a SOD-123 package configuration, designed for high-efficiency rectification in compact electronic circuits.

Feature Summary

• Schottky barrier construction enables ultra-high-speed switching capabilities.
• Low forward voltage drop minimizes power loss during conduction.
• Lead-free packaging complies with environmental standards.

Applications

• DC-DC converter output rectification
• Power supply freewheeling diodes
• Reverse polarity protection circuits

Procurement Notes

Verify the specific datasheet revision to confirm exact thermal resistance values and maximum junction temperature ratings. Ensure the ordering suffix matches the required tape-and-reel quantity specifications for your manufacturing line. Cross-reference the marking code on the component body against official documentation to prevent counterfeit parts.

Selection Notes

Select this component when a low-profile surface mount solution is required for moderate current applications up to 3A. Consider the 40V reverse voltage rating relative to the circuit's peak inverse voltage requirements. Evaluate the SOD-123 footprint compatibility against existing board space constraints compared to larger packages.

Part Context

This part belongs to Comchip Technology's general-purpose Schottky rectifier lineup. It shares design principles with other series like CDBU and CDBMT but offers higher current handling than smaller signal variants. The product line emphasizes efficiency and reliability for consumer and industrial electronics.

Replacement Considerations

Direct substitutes include the SS34 or SS34F from various manufacturers, provided they meet the 3A/40V specification and SOD-123 package dimensions. Verify pinout orientation and forward voltage characteristics before implementation.