1N1128AR

Single Diodes Overview

The Microchip Technology 1N1128AR is a standard recovery rectifier diode belonging to the S/R204 series. It features a maximum DC reverse voltage of 600 V and an average forward rectified current of 12 A. The device utilizes a DO-4 (DO-203AA) axial leaded package designed for panel or chassis mounting. Key electrical characteristics include a maximum forward voltage of 1.2 V at 30 A and a reverse leakage current of 10 µA at 600 V. It operates within a junction temperature range of -65°C to 200°C.

Single Diodes Feature Summary

• Standard recovery speed suitable for general-purpose rectification applications
• High thermal stability with a maximum junction temperature of 200°C
• Robust mechanical construction in a DO-4 axial leaded package

Single Diodes Applications

• Industrial power supply rectification
• General-purpose high-voltage rectifier circuits
• Chassis-mounted power conversion systems

Single Diodes Procurement Notes

Verify that the specific suffix 'AR' aligns with the manufacturer's official ordering nomenclature, as primary datasheets typically list the base part number 1N1128. Confirm packaging details, as the standard component is often supplied in bulk rather than tape-and-reel formats. Ensure compliance with RoHS status requirements, noting that this series may not meet current environmental directives.

Single Diodes Selection Notes

Select this component when a high-current, high-voltage rectifier with standard recovery characteristics is required. The DO-4 package necessitates board space for axial leads and secure mounting hardware. Consider the 200°C junction temperature rating for environments requiring elevated thermal performance compared to standard plastic-packaged alternatives.

Single Diodes Part Context

The 1N1128 is part of Microchip's legacy S/R204 series of silicon rectifiers. This series is characterized by rugged construction and high surge current capability. The device serves as a replacement for older military-grade specifications, providing reliable performance in demanding industrial and aerospace applications where long-term availability and proven reliability are critical.

Single Diodes Replacement Considerations

Direct substitutes include other 1N1128 variants from different manufacturers offering identical 600V/12A ratings in DO-4 packages. Verify pinout compatibility and mounting hole dimensions before substitution.