CDBM240L-HF

Overview

The CDBM240L-HF is a Schottky barrier rectifier manufactured by Comchip Technology, designed for surface-mount applications. It features a Mini SMA (SOD-123) package and utilizes silicon epitaxial planar chip technology with a metal-silicon junction. The device provides a repetitive reverse voltage of 40V and an average forward current of 2A. Key electrical parameters include a maximum forward voltage drop of 500mV at rated current, a peak forward surge current capability of 50A, and a low reverse leakage current of 1µA. It operates within a temperature range of -55°C to +150°C.

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 transients in sensitive circuits
• Lead-free construction compliant with environmental standards

Applications

• DC-DC converters and power supply modules
• Reverse polarity protection circuits
• Clamping diodes in high-frequency switching applications
• Free-wheeling diodes in inductive load drivers

Procurement Notes

Verify the specific suffix 'HF' confirms lead-free compliance and RoHS status as per the manufacturer's latest documentation. Ensure the ordering quantity aligns with standard reel or cut-tape packaging options provided by distributors. Confirm that the SOD-123 footprint matches the target PCB design requirements before finalizing procurement orders.

Selection Notes

Select this component when low forward voltage and fast recovery are critical for system efficiency. The 40V rating suits low-voltage DC systems, while the 2A current capacity supports moderate power loads. Consider the SOD-123 package size for space-constrained designs requiring robust thermal performance and high surge current handling capabilities compared to smaller packages.

Part Context

This part belongs to Comchip Technology's CDBM series of low-profile Schottky barrier rectifiers. The series is characterized by its small outline package and enhanced thermal resistance. It serves as a specialized alternative to standard rectifiers where speed and efficiency are prioritized over high voltage ratings, fitting into the broader category of surface-mount power management components.

Replacement Considerations

Direct substitutes may include other 40V 2A Schottky diodes in the SOD-123 package from different manufacturers, such as the BAS40 or similar variants, provided they meet the same forward voltage and reverse leakage specifications. Verify pinout compatibility and thermal characteristics before substitution.