1N1189R

Single Diodes Overview

The 1N1189R is a standard recovery rectifier manufactured by Microchip Technology. It features a DC reverse voltage of 600 V and an average rectified current of 35 A. The device utilizes a DO-203AB (DO-5) package with stud mounting. Operating junction temperature ranges from -65°C to 175°C. Reverse leakage current is specified at 10 µA @ 600 V. Forward voltage is 1.4 V @ 110 A. Recovery speed exceeds 500 ns.

Single Diodes Feature Summary

• High voltage capability for demanding power applications
• Robust thermal performance across wide temperature range
• Stud mount construction for secure installation

Single Diodes Applications

• Industrial power supplies
• Motor drive circuits
• Welding equipment

Single Diodes Procurement Notes

Verify the specific suffix requirements against your design specifications before ordering. Confirm that the DO-5 stud mount interface matches your heatsink or chassis mounting provisions. Ensure thermal management solutions accommodate the specified operating temperature limits. Check for any recent product change notifications regarding material or process updates.

Single Diodes Selection Notes

Select this component when high voltage blocking and moderate current handling are required in a ruggedized package. The standard recovery characteristic suits lower frequency switching applications. Consider the stud mount requirement for mechanical stability and thermal dissipation. Evaluate the forward voltage drop impact on overall system efficiency at the expected load current.

Single Diodes Part Context

This part belongs to Microchip's legacy rectifier lineup, often associated with MIL-PRF-19500 standards for military-grade reliability. It serves as a replacement for older silicon rectifiers in industrial and aerospace systems where proven performance and durability are critical. The DO-5 package provides a compact footprint for high-power density designs.

Single Diodes Replacement Considerations

Direct substitutes include the 1N1189 and 1N3768. Verify pinout compatibility and mounting hole dimensions when swapping. Ensure the replacement meets the same voltage and current ratings. Check if the new unit requires similar thermal interface materials for optimal heat transfer.