1N5802URS/TR

Overview

The Microchip Technology 1N5802URS/TR is a military-qualified ultrafast recovery glass rectifier diode. It features a voidless hermetically sealed glass package with an internal Category 1 metallurgical bond, suitable for high-reliability applications where failure is not tolerated. The device operates within a junction temperature range of -65°C to +175°C and provides a working peak reverse voltage of 50V. Key electrical parameters include a maximum forward surge current of 35A, a reverse recovery time of 25ns, and a capacitance of 25pF at 1MHz.

Feature Summary

• Voidless hermetically sealed glass construction with quadruple-layer passivation
• Internal Category 1 metallurgical bonds for robust performance
• Ultrafast recovery characteristics optimized for low forward loss
• Inherently radiation hard design

Applications

• Military and space electronics requiring extreme reliability
• High-frequency switching power supplies
• Applications demanding fast switching speeds and low thermal resistance

Procurement Notes

Verify the specific ordering suffix against the manufacturer's nomenclature guide to confirm the package configuration. The URS designation indicates one square end cap and one round end cap. Ensure compliance requirements are met, as RoHS compliant versions are available only on commercial grades, while military qualifications may differ in material specifications.

Selection Notes

Select this component when high-reliability standards such as MIL-PRF-19500/477 are required. The 50V rating suits low-voltage rectification tasks. Consider the surface mount MELF package for compact designs. Evaluate thermal management needs based on the specified junction-to-end cap thermal resistance and derating curves provided in the datasheet.

Part Context

This part belongs to the 1N5802US, 1N5804US, and 1N5806 series of ultrafast recovery rectifiers. These devices serve as JEDEC registered surface mount equivalents to standard axial-leaded types. The series offers various voltage ratings from 50V to 150V, catering to diverse high-reliability rectification needs across different voltage domains.

Replacement Considerations

Direct replacements include the JAN1N5802US or JANTX1N5802US variants which share identical electrical characteristics and qualification levels. Verify that any substitute maintains the same URS package geometry and metallurgical bond specifications to ensure mechanical and thermal compatibility.