1N1189

Single Diodes Overview

The GeneSiC Semiconductor 1N1189 is a silicon standard recovery rectifier diode housed in a DO-5 (DO-203AB) stud-mount package. It features a continuous forward current rating of 35 A and a repetitive peak reverse voltage of 500 V. The device exhibits a maximum non-repetitive surge forward current of 595 A under half-sine wave conditions. Electrical characteristics include a forward voltage of 1.2 V at 35 A and a thermal resistance from junction to case of 0.25 °C/W. Operating temperatures range from -55 °C to +150 °C.

Single Diodes Feature Summary

• High surge current capability for robust transient handling
• Stud-mount configuration with base connection for efficient thermal dissipation
• Standard polarity designates the stud as the cathode terminal

Single Diodes Applications

• General purpose power rectification
• Industrial power supply circuits
• Battery charging systems

Single Diodes Procurement Notes

Verify the specific manufacturer source, as this component family is produced by multiple vendors including GeneSiC, Microchip, and Digitron. Confirm that the part number matches the exact voltage and current ratings required for your application. Ensure the package type corresponds to the DO-5 stud mount specification before procurement.

Single Diodes Selection Notes

Select this component when a high-current single-phase rectifier is needed with a stud-mount interface. The 500 V rating suits medium-voltage applications. Consider the 0.25 °C/W thermal resistance for heatsink calculations. Verify if the reverse polarity variant is required, which swaps the anode and cathode positions relative to the stud.

Single Diodes Part Context

This diode belongs to the 1N1188 through 1N1190R series, which covers voltages from 400 V to 600 V while maintaining a consistent 35 A current rating. The series utilizes the DO-5 package for standardized mounting. Variants exist with reversed leads, indicated by the 'R' suffix, altering the physical terminal orientation while keeping electrical specifications identical.

Single Diodes Replacement Considerations

Direct substitutes within the same series include the 1N1188 and 1N1190, which share the 35 A rating but differ in reverse voltage ratings of 400 V and 600 V respectively.