1N3891

Single Diodes Overview

The Microchip Technology 1N3891 is a fast recovery rectifier device designed for high-performance power conversion applications. It features a maximum repetitive peak reverse voltage of 200 V and an average forward current rating of 20 A. The component utilizes a hermetically sealed DO-203AA (DO-4) package with a threaded stud mount, ensuring robust mechanical stability. Electrical characteristics include a maximum reverse recovery time of 150 ns and a junction temperature range spanning from -65°C to +175°C.

Single Diodes Feature Summary

• Fast recovery time capability suitable for high-frequency switching environments
• Hermetically sealed metal and glass case construction for environmental protection
• Military qualification available at JAN, JANTX, and JANTXV levels
• Low thermal resistance design facilitating efficient heat dissipation

Single Diodes Applications

• DC power supplies
• Inverters and converters
• Choppers
• Ultrasonic systems
• Free-wheeling diode circuits

Single Diodes Procurement Notes

Verify the specific ordering suffix to confirm polarity configuration, as the standard designation implies cathode-to-stud orientation while an 'R' suffix indicates anode-to-stud. Confirm RoHS compliance requirements by checking for the 'e3' suffix on commercial grade parts. Ensure the procurement specification matches the required reliability level, such as JAN or JANTXV, if military-grade performance is mandated for the application.

Single Diodes Selection Notes

Select this component when a 200 V blocking voltage and 20 A continuous current capacity are required in a stud-mount package. Consider the 150 ns reverse recovery time for high-speed switching applications where low switching losses are critical. Evaluate the thermal management strategy based on the specified junction-to-case thermal resistance values for both standard and 'A' type devices to ensure operation within the maximum allowable case temperature limits.

Single Diodes Part Context

The 1N3891 belongs to the 1N3889 through 1N3893 family of fast recovery rectifiers manufactured by Microchip Technology. This series provides various voltage ratings ranging from 50 V to 400 V while maintaining consistent current handling capabilities. The family is characterized by its rugged DO-203AA package and availability in both standard and reverse polarity configurations to accommodate diverse circuit board layout requirements.

Single Diodes Replacement Considerations

Direct substitutes within the same family include the 1N3890A and 1N3893A, provided their respective voltage ratings of 100 V and 400 V align with the system design constraints. Verify that any replacement maintains the 20 A current rating and compatible mounting interface specifications.