1N3973

Single Diodes Overview

The Microchip Technology 1N3973 is a silicon power rectifier diode designed for general-purpose applications. It features a maximum DC reverse voltage of 400V and an average rectified current rating of 100A. The device utilizes a stud mount configuration within the DO-8 package style. It operates across a junction temperature range from -65°C to 200°C, ensuring reliability in demanding thermal environments. Key electrical specifications include a forward voltage drop of 1.2V at rated conditions and a leakage current of 50µA at 400V.

Single Diodes Feature Summary

• High current handling capability with a 100A average rectified current rating
• Robust voltage blocking performance rated at 400V DC reverse voltage
• Extended thermal stability supporting junction temperatures up to 200°C
• Durable stud mount construction suitable for high-power mounting solutions

Single Diodes Applications

• Medium to high-voltage rectification circuits
• Industrial power supply systems requiring robust diode protection
• General-purpose silicon power rectification tasks

Single Diodes Procurement Notes

Verify the specific manufacturer source, as the 1N3973 designation has been associated with multiple entities including Microsemi Corporation and Solid State Inc. Ensure the datasheet confirms the 100A current rating and 400V reverse voltage, as some generic listings may contain conflicting specifications. Confirm the DO-8 package and stud mount style match your mechanical requirements before ordering.

Single Diodes Selection Notes

Select this component when high average current capacity is required alongside moderate voltage blocking. The stud mount package necessitates appropriate heatsinking infrastructure for thermal management. Compare against other DO-8 rectifiers if space constraints exist. Verify that the 200°C junction temperature rating aligns with the system's thermal design margins and ambient operating conditions.

Single Diodes Part Context

This part belongs to the family of standard silicon power rectifiers. These components are fundamental building blocks in power conversion stages. The 1N3973 specifically addresses applications needing substantial current throughput. Its classification as a general-purpose rectifier indicates broad utility across various electronic equipment types without specialized switching characteristics.

Single Diodes Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.