1N5822/TR

Overview

The Microchip Technology 1N5822/TR is a silicon Schottky barrier rectifier designed for low voltage, high frequency applications. It features a maximum average forward rectified current of 3A and a maximum repetitive peak reverse voltage of 40V. The device utilizes a SQ-MELF-2 surface mount package to minimize conduction losses and switching noise. Key electrical characteristics include a specified low forward voltage drop and high surge current capability, making it suitable for power supply circuits requiring efficient rectification.

Feature Summary

• Schottky barrier technology ensures extremely fast switching with negligible switching losses
• Low forward voltage drop minimizes conduction losses in power circuits
• High surge current capability provides robust protection against transient events
• Surface mount SQ-MELF-2 package facilitates automated assembly

Applications

• Switch Mode Power Supplies (SMPS)
• High frequency DC to DC converters
• Free wheeling diodes in inverter circuits
• Polarity protection systems
• Small battery chargers

Procurement Notes

Verify the specific manufacturer designation on the component marking, as the 1N5822 part number is utilized by multiple semiconductor vendors including STMicroelectronics and Diodes Incorporated. Confirm that the SQ-MELF-2 package matches the design requirements, as standard axial DO-201AD packages are also common for this part number across different suppliers. Ensure the datasheet aligns with the intended thermal and electrical performance specifications.

Selection Notes

Select this component when a surface mount solution is required for 3A rectification at 40V ratings. The SQ-MELF-2 package offers space savings compared to traditional axial leads while maintaining similar electrical performance. Consider the forward voltage drop specifications relative to the system's efficiency targets and verify that the operating junction temperature range meets the environmental constraints of the final application.

Part Context

This component belongs to the 1N58xx series of Schottky rectifiers, which are industry-standard devices for low-voltage power conversion. While the base 1N5822 specification defines the electrical limits, the /TR suffix indicates a specific tape and reel packaging format optimized for automated surface mount manufacturing processes. This variant supports high-volume production environments requiring consistent component placement.

Replacement Considerations

Direct substitutes include other manufacturers' versions of the 1N5822 in equivalent SQ-MELF-2 or DO-201AD packages. Verify pinout compatibility and thermal resistance values when replacing with parts from different vendors to ensure identical mounting and heat dissipation characteristics.