CDBF0540

Overview

The CDBF0540 is a surface-mount Schottky barrier diode manufactured by Comchip Technology. It features a single silicon junction with a maximum average forward rectified current of 200 mA and a repetitive peak reverse voltage of 40 V. The device utilizes an extremely thin, leadless SOD-323F (1005) package designed for small-signal applications. Key electrical characteristics include a low forward voltage drop of 450 mV at rated current and a maximum reverse leakage current of 1 uA. The component supports a forward surge current of 3 A and operates at a maximum junction temperature of +125 °C with a power dissipation rating of 250 mW.

Feature Summary

• Majority carrier conduction ensures fast switching performance with minimal charge storage effects.
• Extremely thin and leadless package design facilitates automated assembly on compact printed circuit boards.
• Low forward voltage characteristic reduces power loss and heat generation in signal rectification circuits.

Applications

• Small-signal rectification in consumer electronics
• Clamping and protection in high-speed digital circuits
• Power supply output rectification in low-current adapters

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm exact packaging options such as cut tape or reel quantities. Ensure compliance with RoHS directives and material declarations required for your manufacturing process. Confirm that the requested variant matches the standard SOD-323F footprint dimensions to avoid PCB layout conflicts during procurement.

Selection Notes

Select this component when space constraints require a leadless surface-mount package for low-voltage signal processing. The 40 V reverse voltage rating provides adequate margin for most low-power logic levels. Consider the 200 mA current limit for load requirements and verify thermal management needs based on the 250 mW power dissipation capability in the final enclosure environment.

Part Context

This part belongs to the CDBF series of small-signal Schottky diodes from Comchip Technology. The series is characterized by its use of silicon technology and gold-plated terminals solderable per MIL-STD-750 standards. These devices are engineered for reliability in automotive and industrial environments, often meeting AEC-Q101 validation criteria for broader application scope.

Replacement Considerations

Compatible substitutes include the CDBFR0240 and CDBU40-HF from Comchip Technology, which share similar 200 mA and 40 V ratings. Cross-brand alternatives must match the SOD-323F footprint and ensure equivalent forward voltage and reverse leakage specifications to maintain circuit performance integrity.