1N1128R

Single Diodes Overview

The Microchip Technology 1N1128R is a standard recovery rectifier diode designed for high-power applications. It features a maximum repetitive peak reverse voltage of 600 V and an average forward rectified current rating of 12 A. The device utilizes a stud mount configuration within the DO-203AA (DO-4) package, supporting a maximum surge current of 250 A. It operates across a junction temperature range from -65°C to +200°C with a typical forward voltage drop of 1.2 V at 30 A.

Single Diodes Feature Summary

• High thermal stability enabling operation up to 200°C junction temperature
• Robust mechanical design via stud mount installation method
• Standard recovery characteristics suitable for general-purpose power conversion

Single Diodes Applications

• Industrial power supply units
• Motor drive rectification circuits
• Welding equipment power stages

Single Diodes Procurement Notes

Verify the specific suffix 'R' against official Microchip documentation to confirm if it denotes a revised version or specific packaging variant distinct from the base 1N1128. Ensure compatibility with existing heatsinking infrastructure due to the stud mount requirement. Confirm RoHS status as datasheets may indicate non-compliance for legacy series parts.

Single Diodes Selection Notes

Select this component when a 600V blocking capability and 12A continuous current are required in a ruggedized stud-mount form factor. Consider the 200°C maximum junction temperature for high-ambient environments. Compare against similar DO-4 packages from other manufacturers if lead times for Microchip products are constrained.

Single Diodes Part Context

This part belongs to the Microchip 1N1128 series of silicon rectifiers. It shares the same electrical ratings as the 1N1128 but may differ in manufacturing revisions or specific ordering suffixes. It is part of a broader family including variants like 1N1126R and 1N1124R which offer lower voltage ratings.

Single Diodes Replacement Considerations

Direct substitutes include the 1N1128 base part number if the 'R' suffix does not imply a functional change. Other DO-4 packaged 600V 12A rectifiers from different manufacturers may serve as alternatives provided thermal and mechanical mounting constraints are met.