ACDBN140-HF

Overview

The ACDBN140-HF is a surface-mount Schottky barrier rectifier manufactured by Comchip Technology. It features a single diode configuration housed in a compact 1206 package. The device supports a maximum repetitive peak reverse voltage of 40 V and an average forward current of 1 A. Key electrical characteristics include a forward voltage of approximately 550 mV at 1 A and a reverse leakage current of 200 µA at 40 V. Designed for high-speed switching applications, it offers low power loss and high efficiency suitable for space-constrained PCB layouts.

Feature Summary

• Ultra-fast switching capability with low forward voltage drop
• Compact 1206 surface-mount footprint for board space optimization
• Guarding against overvoltage conditions via robust junction design

Applications

• DC-DC converter output rectification
• Low voltage power supply freewheeling diodes
• Reverse polarity protection circuits

Procurement Notes

Verify the specific suffix and marking code on the component body to confirm the 1206 package variant. Ensure compatibility with standard reflow soldering profiles for small outline packages. Cross-reference the manufacturer datasheet for precise thermal dissipation limits under your specific ambient operating conditions before finalizing the bill of materials.

Selection Notes

Select this component when a low-profile Schottky rectifier is required for 40 V systems. The 1206 package provides a balance between current handling and board density. Consider the 200 µA leakage specification for sensitive low-power standby modes. Verify that the 1 A continuous current rating meets the peak load requirements of the target circuit design.

Part Context

This part belongs to Comchip's SMD Schottky Barrier Rectifier series, which utilizes silicon epitaxial planar chips. The series emphasizes batch process consistency for reliable reverse leakage performance. It serves as a surface-mount alternative to through-hole rectifiers in modern consumer and industrial electronics requiring efficient power conversion.

Replacement Considerations

Check for direct pin-compatible substitutes within the same voltage and current ratings from other manufacturers. Ensure any replacement maintains the 1206 package dimensions and similar forward voltage characteristics to preserve circuit efficiency.