1N3890R

Single Diodes Overview

The Microchip Technology 1N3890R is a fast recovery rectifier diode designed for high-reliability applications. It features a maximum repetitive peak reverse voltage of 100 V and an average forward current rating of 12 A at a case temperature of 100 °C. The device utilizes a hermetically sealed DO-203AA (DO-4) package with a threaded stud mount. Electrical characteristics include a maximum forward voltage of 1.5 V at 38 A and a typical reverse recovery time of 200 ns.

Single Diodes Feature Summary

• Hermetically sealed metal and glass case body with a threaded stud terminal.
• Fast recovery time suitable for high-frequency switching applications.
• Low thermal resistance to facilitate efficient heat dissipation.
• Anode-to-stud polarity configuration.

Single Diodes Applications

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

Single Diodes Procurement Notes

Verify the specific reliability level, as commercial versions lack military qualification while JAN, JANTX, and JANTXV variants are qualified per MIL-PRF-19500/304. Confirm RoHS compliance status by checking for the e3 suffix on commercial grade devices. Ensure the ordering part number correctly specifies the 12 A current rating and the R polarity designation for anode-to-stud orientation.

Single Diodes Selection Notes

Select this component when a robust, hermetically sealed rectifier is required for harsh environments. The 1N3890R provides a balance of moderate voltage blocking and high surge capability. Consider the non-A variant if lower thermal resistance is needed, or verify that the 12 A rating meets the continuous load requirements without excessive derating.

Single Diodes Part Context

This device belongs to the 1N3889 through 1N3893 family of fast recovery rectifiers manufactured by Microsemi Corporation, now part of Microchip Technology. The series offers both standard and reverse polarities in various voltage ratings. The 1N3890R specifically addresses the 100 V requirement within this lineup.

Single Diodes Replacement Considerations

Compatible substitutes within the same datasheet include the 1N3889R and 1N3891R. Verify that any replacement matches the 100 V reverse voltage, 12 A current rating, and DO-203AA package dimensions.