1N5550USE3/TR

Overview

The Microchip Technology 1N5550USE3/TR is a single standard recovery rectifier diode designed for surface-mount applications. It features a B SQ-MELF package and operates with a maximum repetitive reverse voltage of 200 V and an average forward rectified current of 5 A. The device exhibits a maximum forward voltage drop of 1.2 V at rated current and a typical reverse leakage current of 1 µA. Key electrical characteristics include a maximum non-repetitive peak surge current of 100 A and a maximum reverse recovery time of 2 µs. It supports an operating temperature range from -65 °C to +175 °C.

Feature Summary

• Surface-mount construction in a compact B SQ-MELF package for automated assembly
• High-temperature silicon planar junction design for reliable operation up to 175 °C
• Standard recovery characteristics suitable for general-purpose rectification
• Isolated case connection for flexible circuit integration

Applications

• General-purpose rectification in power supply circuits
• Freewheeling diodes in inductive load switching
• DC-AC conversion stages requiring high-temperature stability

Procurement Notes

Verify the specific suffix 'USE3' confirms lead-free composition and RoHS compliance status as per manufacturer documentation. Confirm the 'TR' designation indicates tape-and-reel packaging configuration. Check lifecycle status, as related variants may be marked NRND. Ensure the MELF package type matches PCB footprint requirements. Validate thermal management capabilities against system heat dissipation needs.

Selection Notes

Select this component when surface-mount technology is required for standard rectification tasks. The 200 V rating suits low-to-medium voltage DC systems. The 5 A current capacity supports moderate power loads. High-temperature operation makes it suitable for harsh environments. Compare reverse recovery time against switching frequency requirements to ensure minimal conduction losses.

Part Context

This part belongs to the 1N555x series of glass-passivated silicon junction rectifiers. It serves as the surface-mount equivalent through-hole counterparts like the 1N5550. The series is characterized by high reliability and ruggedness. Microchip Technology manufactures these devices using planar technology. They are widely used in industrial and commercial electronics.

Replacement Considerations

Direct pin-compatible replacements include other 1N5550-series SMD variants from different manufacturers. Verify electrical parameters such as Vf and Ir match or exceed original specifications. Ensure package dimensions align with existing PCB land patterns. Check if alternative parts offer improved reverse recovery times for higher frequency applications.