1N1189

Single Diodes Overview

The Microchip Technology 1N1189 is a silicon standard recovery rectifier diode designed for high-power applications. It features an average forward current rating of 40 A and a maximum repetitive peak reverse voltage of 500 V. The device utilizes a DO-203AB (DO-5) axial leaded package, suitable for stud or chassis mounting configurations. Key electrical characteristics include a maximum surge current capability of 800 A under half-sine wave conditions and a low thermal resistance from junction to case of 1.25°C/W. The component supports a wide operating junction temperature range from -65°C to +200°C, ensuring reliability in demanding thermal environments.

Single Diodes Feature Summary

• High current handling capability with a 40 A average forward current rating
• Robust surge withstand performance supporting up to 800 A non-repetitive peak forward surge current
• Wide thermal operating range extending to a maximum junction temperature of 200°C
• Low thermal resistance design facilitating efficient heat dissipation in power circuits

Single Diodes Applications

• Industrial power supply rectification
• Battery charging systems
• DC motor drive circuits
• Welding equipment power stages

Single Diodes Procurement Notes

Verify the specific manufacturer source, as Digitron also produces this part number. Confirm RoHS compliance status, as historical data indicates non-compliance for some variants. Ensure the package type matches the DO-203AB specification required for your mounting infrastructure. Validate the voltage and current ratings against your circuit's peak demands before integration.

Single Diodes Selection Notes

Select this component when high average current and robust surge tolerance are required in a standard axial package. Consider the 500 V reverse voltage rating relative to your system's peak inverse voltage. Evaluate the thermal management requirements given the 1.25°C/W junction-to-case resistance. Compare against other members of the 1N118x series if different voltage ratings are needed.

Single Diodes Part Context

This diode belongs to the 1N1183 through 1N1190 family of standard recovery rectifiers. These components share similar physical packages and thermal characteristics but vary primarily in their repetitive peak reverse voltage ratings. The 1N1189 specifically provides a 500 V blocking capability within this lineup, distinguishing it from lower-voltage counterparts like the 1N1183A (50 V) or higher-voltage variants.

Single Diodes Replacement Considerations

Compatible substitutes within the same family include the 1N1189A, which shares identical electrical specifications. Other parts in the 1N1183-1N1190 series may serve as alternatives if voltage ratings align with specific circuit requirements. Verify pinout compatibility and mounting hole dimensions when replacing with equivalent devices from other manufacturers.