1N3893

Single Diodes Overview

The Microchip Technology 1N3893 is a fast recovery rectifier device designed for high-performance switching applications. It features a maximum repetitive peak reverse voltage of 400 V and an average forward current rating of 12 A at a case temperature of 100 °C. The component exhibits a typical junction capacitance of 115 pF and a maximum reverse recovery time of 200 ns under specified test conditions. It operates within a junction and storage temperature range of -65 °C to +175 °C, with a thermal resistance from junction to case of 2.0 °C/W.

Single Diodes Feature Summary

• Hermetically sealed metal and glass case body with threaded stud mounting
• Fast recovery characteristics suitable for high-frequency switching
• Low forward voltage drop for improved efficiency
• Military qualification available up to JANTXV level

Single Diodes Applications

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

Single Diodes Procurement Notes

Verify the specific reliability level required, as the 1N3893 family includes commercial, JAN, JANTX, and JANTXV variants. Confirm polarity configuration, noting that standard units have cathode-to-stud orientation while 'R' suffixes indicate anode-to-stud. Ensure RoHS compliance requirements are met by checking for the 'e3' suffix on commercial grade parts. Cross-reference datasheet revision T4-LDS-0143 Rev. 2 for accurate electrical limits.

Single Diodes Selection Notes

Select the 1N3893 when a 400 V blocking capability and 12 A continuous current handling are necessary in a stud-mount package. Consider the low thermal resistance of 2.0 °C/W for efficient heat dissipation in high-power density designs. Evaluate the 200 ns reverse recovery time against circuit switching frequencies to ensure minimal switching losses. Verify that the operating environment supports the -65 °C to +175 °C junction temperature range.

Single Diodes Part Context

The 1N3893 belongs to the 1N3889–1N3891 and 1N3893 family of fast recovery rectifiers manufactured by Microsemi (now Microchip Technology). These devices are qualified per MIL-PRF-19500/304 for military applications. The family shares similar mechanical dimensions in the DO-203AA (DO-4) package but varies in voltage ratings and current capacities across different part numbers.

Single Diodes Replacement Considerations

Direct substitutes include other 1N3893 variants with different reliability levels such as JAN1N3893 or JANTX1N3893. Commercial equivalents may be found within the same Microchip family, provided they match the 400 V reverse voltage and 12 A current ratings. Verify polarity and RoHS status before substitution.