CD5822

Overview

The CD5822 is a silicon Schottky barrier rectifier manufactured by Microchip Technology. It features a single-element, one-phase configuration with a maximum repetitive reverse voltage of 40V and an average forward current rating of 3A. The device utilizes a die-level package format suitable for specialized mounting applications. It operates within a junction temperature range extending up to 175°C, ensuring reliability in high-temperature environments. The component is classified under general-purpose rectifiers and is designed for efficient power conversion tasks requiring low forward voltage drop characteristics typical of Schottky technology.

Feature Summary

• Schottky barrier construction for low forward voltage drop
• High thermal stability with elevated junction temperature capability
• Single-phase rectification architecture
• Silicon-based semiconductor material

Applications

• General-purpose power supply rectification
• Free-wheeling diodes in switching circuits
• Reverse polarity protection in DC systems
• Clamping diodes in digital logic interfaces

Procurement Notes

Verify the specific package variant and manufacturer lot details when sourcing, as the CD5822 designation may appear across different legacy product lines or foundry agreements. Confirm RoHS compliance status explicitly, as older iterations of this part number may not meet current environmental directives. Ensure the supplier provides traceable documentation for the die specification and electrical test limits to guarantee performance consistency in critical designs.

Selection Notes

Select the CD5822 when a robust, high-current Schottky rectifier is required in a compact die form factor. Its 40V rating suits low-voltage DC bus applications, while the 3A capacity handles moderate load currents. Consider its thermal performance if operating in enclosed spaces. Compare against surface-mount alternatives if board space permits, but utilize this die option for custom hybrid assemblies or direct-bonded applications where traditional packages are unsuitable.

Part Context

The CD5822 belongs to Microchip's broader portfolio of discrete semiconductor devices, specifically within the Schottky rectifier category. This family of components is engineered for efficiency and speed, leveraging Schottky physics to minimize energy loss during conduction. The part represents a legacy offering that continues to serve niche industrial and commercial markets requiring reliable, high-reverse-voltage rectification in small footprints.

Replacement Considerations

Direct substitutes include other 40V 3A Schottky diode dies from Microchip or compatible manufacturers such as Microsemi. Verify pinout compatibility if integrating into existing footprints, though die-level parts often require custom bonding. Check forward voltage and reverse leakage specifications to ensure equivalent performance in the target circuit application.