1N3621

Single Diodes Overview

The Microchip Technology 1N3621 is a high-reliability silicon rectifier diode designed for power applications. It features a maximum average forward rectified current of 25 A and a maximum repetitive peak reverse voltage of 500 V. The device utilizes a DO-4 (DO-203AA) metal stud mount package with a cathode case connection. It supports an operating temperature range from -65 °C to 200 °C and can withstand a maximum non-repetitive peak forward surge current of 400 A.

Single Diodes Feature Summary

• High reliability construction suitable for demanding environments
• Robust thermal management via metal stud mount packaging
• Capable of handling significant surge currents up to 400 A

Single Diodes Applications

• Power supply rectification circuits
• Industrial power conversion systems
• High-temperature electronic assemblies

Single Diodes Procurement Notes

Verify the manufacturer origin, as the 1N3621 designation has historical roots in multiple semiconductor producers including Motorola and Microsemi. Confirm that the specific unit received matches the required electrical specifications and package dimensions. Ensure compliance with relevant export control classifications such as EAR99 if applicable to your jurisdiction.

Single Diodes Selection Notes

Select this component when a ruggedized, stud-mount rectifier is required for high-current DC applications. The 500 V rating and 25 A continuous current capacity define its operational limits. Consider the DO-4 package constraints regarding mounting hardware and thermal interface requirements compared to surface-mount alternatives.

Single Diodes Part Context

The 1N3621 belongs to the standard rectifier diode family, historically associated with Motorola and later Microsemi, now part of Microchip Technology. These devices are characterized by their durability and ability to operate at elevated temperatures. The DO-4 package provides a robust mechanical solution for high-power dissipation scenarios where leaded packages would be insufficient.

Single Diodes Replacement Considerations

Cross-reference with other manufacturers offering equivalent 25A/500V stud-mount diodes. Verify pinout compatibility and thermal resistance values before substitution.