1N3891AR

Single Diodes Overview

The Microchip Technology 1N3891AR is a high-reliability fast recovery rectifier diode designed for demanding environments. It features a hermetically sealed DO-203AA (DO-4) package with stud mounting, ensuring robust physical integrity. The device operates with a maximum junction temperature of 150°C and supports a wide voltage range from 50V to 400V reverse repetitive peak voltage. Qualified under MIL-PRF-19500/304, it provides consistent performance in space, military aircraft, and shipboard applications where reliability is critical.

Single Diodes Feature Summary

• Hermetically sealed construction for superior environmental protection
• Military qualification per MIL-PRF-19500/304 standards
• Fast recovery characteristics optimized for high-frequency switching

Single Diodes Applications

• Spacecraft power systems
• Military aircraft electronics
• Shipboard equipment
• High reliability industrial applications

Single Diodes Procurement Notes

Verify the specific suffix 'AR' against the manufacturer's current datasheet to confirm exact electrical tolerances and lot traceability requirements. Ensure the procurement channel is authorized to handle military-grade components. Confirm that the hermetic seal integrity meets the necessary specifications for the intended operational environment before finalizing orders.

Single Diodes Selection Notes

Select this component when hermetic sealing and military qualification are mandatory for the application. Compare the specific voltage rating required against the available options within the 1N3891 series family. Consider the stud mounting requirement and thermal management needs associated with the DO-203AA package form factor during circuit design.

Single Diodes Part Context

This part belongs to the 1N3891 series of fast recovery rectifiers manufactured by Microchip Technology. The series includes variants such as 1N3891A and 1N3891R, differentiated by packaging and qualification levels. The 1N3891AR specifically denotes the hermetically sealed version qualified for high-reliability sectors.

Single Diodes Replacement Considerations

Direct substitutes include other parts qualified under MIL-PRF-19500/304 with identical DO-203AA stud mount packages. Verify matching reverse voltage ratings and recovery times. Cross-reference with equivalent military-spec rectifiers from other manufacturers if availability is constrained.