CDBMHT140-HF

Overview

The CDBMHT140-HF is a surface-mount Schottky barrier rectifier manufactured by Comchip Technology. It features a SOD-123HT package with a maximum repetitive peak reverse voltage of 40V and an average forward rectified current of 1A. The device exhibits a low forward voltage drop of 500mV at 1A and a maximum reverse leakage current of 500µA at 40V. It supports a high surge current of 9A and operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Ultra-low profile SOD-123HT package design
• High efficiency with low forward voltage drop
• Guardring structure for overvoltage protection

Applications

• DC-DC converters
• Power supply units
• Reverse polarity protection circuits

Procurement Notes

Verify the specific suffix 'HF' confirms lead-free compliance with RoHS standards. Confirm the SOD-123HT package dimensions match the target PCB footprint, as this variant differs from standard SOD-123. Ensure the 40V rating meets the circuit's peak inverse voltage requirements under all operating conditions.

Selection Notes

Select this component when space constraints require a thinner profile than standard SOD-123 packages while maintaining 1A current handling. The low forward voltage makes it suitable for low-voltage power applications where minimizing conduction loss is critical. Verify thermal management capabilities for the intended ambient temperature environment.

Part Context

This part belongs to the CDBMHT series of low-profile Schottky rectifiers. It utilizes silicon epitaxial planar chip technology with a metal-silicon junction. The guardring structure enhances reliability against overvoltage events compared to standard planar junctions.

Replacement Considerations

Direct substitutes include other 40V 1A Schottky diodes in SOD-123HT packages such as the SS14 in equivalent thin profiles. Verify pinout compatibility and thermal resistance characteristics before substitution.