1N2138R

Single Diodes Overview

The Microchip Technology 1N2138R is a standard recovery rectifier diode designed for high-power applications. It features a maximum DC reverse voltage (Vr) of 600 V and an average rectified current (Io) rating of 70 A. The device exhibits a forward voltage drop of 1.25 V at a forward current of 200 A, with a maximum reverse leakage current of 25 µA at 600 V. It utilizes a DO-5 (DO-203AB) axial leaded package suitable for terminal mounting. The junction temperature range spans from -65°C to +200°C, and it is classified as a standard speed device with a recovery time greater than 500 ns.

Single Diodes Feature Summary

• High thermal stability with a junction temperature rating up to 200°C
• Robust power handling capability with a 70 A average rectified current rating
• Standard recovery characteristics suitable for general-purpose rectification
• Terminal mounting design in a DO-5 package for secure mechanical installation

Single Diodes Applications

• Industrial power supply rectification
• Battery charging systems
• Welding equipment power stages

Single Diodes Procurement Notes

Verify the specific suffix 'R' against the manufacturer datasheet to confirm any special testing or screening requirements associated with this variant. Ensure the DO-5 terminal configuration matches the PCB or chassis mounting hardware specifications. Confirm that the 600 V reverse voltage and 70 A current ratings provide adequate derating margins for the intended operating environment and thermal conditions.

Single Diodes Selection Notes

Select this component when high current capacity and elevated junction temperature operation are required. The 600 V blocking voltage suits medium-voltage AC-to-DC conversion tasks. Compare the 1.25 V forward voltage drop against efficiency requirements at high load currents. Consider the axial leaded form factor if through-hole terminal mounting is preferred over surface mount alternatives.

Single Diodes Part Context

The 1N2138R belongs to the family of high-current silicon rectifier diodes manufactured by Microchip Technology. These devices are engineered for reliability in demanding power electronics environments. The DO-5 package provides a balance between current carrying capacity and physical footprint, distinguishing it from smaller signal diodes and larger module-based rectifiers.

Single Diodes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.