1N3743R

Single Diodes Overview

The Microchip Technology 1N3743R is a silicon power rectifier diode designed for high-current applications. It features a peak repetitive reverse voltage of 1200 V and an average forward current rating of 275 A. The device utilizes a DO-9 (DO-205AB) stud package, providing robust mechanical stability for industrial environments. Key electrical characteristics include a maximum reverse current of 75 µA and a typical forward voltage drop of 1.3 V at rated current.

Single Diodes Feature Summary

• High-power silicon rectification capability
• Stud mount package for efficient thermal dissipation
• General-purpose industrial design

Single Diodes Applications

• Industrial power supplies
• Motor drive circuits
• Welding equipment

Single Diodes Procurement Notes

Verify the manufacturer marking on the component body to confirm Microchip Technology origin, as this part number is also produced by other vendors such as Vishay and Microsemi. Ensure the package type matches the required DO-9 stud configuration for your specific mounting hardware. Cross-reference datasheets from different manufacturers if sourcing from non-original channels to confirm electrical parameter consistency.

Single Diodes Selection Notes

Select this component when a single-phase silicon rectifier with high current handling is required. The 1200 V reverse voltage rating suits medium-voltage AC-to-DC conversion tasks. Consider the thermal management requirements associated with the 275 A forward current rating and ensure the heatsinking solution supports the stud-mount form factor effectively.

Single Diodes Part Context

This component belongs to the standard 1N3743 series of silicon power rectifiers. It is functionally equivalent to parts designated as 1N3743 or 1N3743AR across various manufacturers including Microsemi and Vishay. The 'R' suffix typically indicates a specific tape-and-reel or bulk packaging variant depending on the specific manufacturer's coding system.

Single Diodes Replacement Considerations

Direct substitutes include 1N3743, 1N3743AR, and 1N3743RA. Verify that replacement units from other brands meet the identical 1200 V reverse voltage and 275 A forward current specifications.