1N3291A

Single Diodes Overview

The Microchip Technology 1N3291A is a standard rectifier diode designed for general-purpose applications. It features a maximum DC reverse voltage of 400 V and an average forward rectified current of 100 A. The device utilizes a DO-205AA (DO-8) package with stud mounting configuration. Key electrical characteristics include a maximum reverse leakage current of 10 mA at 400 V and a typical forward voltage drop of 1.55 V at 310 A. The junction temperature range extends from -65°C to 200°C, ensuring reliability in demanding environments.

Single Diodes Feature Summary

• High current handling capability suitable for power rectification
• Robust thermal performance with extended junction temperature range
• Standard recovery speed for general-purpose switching

Single Diodes Applications

• Industrial power supply rectification
• Battery charging systems
• Welding equipment power stages

Single Diodes Procurement Notes

Verify the specific suffix designation when ordering, as it may indicate packaging or testing variations that do not alter the fundamental electrical function. Confirm RoHS compliance status directly with the manufacturer, as historical data indicates this series may not meet current environmental directives. Ensure the stud mounting interface matches the heatsink design requirements for proper thermal management during installation.

Single Diodes Selection Notes

Select this component for circuits requiring high average current capacity with moderate reverse voltage blocking. The DO-205AA package necessitates board space for stud mounting hardware. Consider the forward voltage drop at rated current for thermal dissipation calculations. This device is appropriate where standard recovery characteristics are sufficient and ultra-fast switching is not required.

Single Diodes Part Context

The 1N3291A belongs to the 1N3288–1N3297 series of high-power rectifiers manufactured by Microchip Technology. These devices share similar structural designs optimized for robustness in industrial environments. The series provides options for varying voltage ratings while maintaining consistent current handling capabilities across the family.

Single Diodes Replacement Considerations

Consult official substitution lists for equivalent DO-205AA stud-mount rectifiers with matching 400 V and 100 A ratings. Verify pinout compatibility and thermal resistance specifications before replacing.