1N1203

Single Diodes Overview

The Microchip Technology 1N1203 is a standard recovery rectifier diode designed for high-power applications. It features a single-phase, single-element silicon construction housed in a DO-203AA (DO-4) stud mount package. The device supports a maximum repetitive reverse voltage of 300 V and an average forward rectified current of 25 A. Key electrical characteristics include a maximum forward voltage of 1.2 V at 30 A and a non-repetitive peak surge current rating of 250 A. The component operates within a junction temperature range of -65°C to +200°C.

Single Diodes Feature Summary

• High thermal stability with a maximum junction temperature of 200°C
• Robust surge current handling capability for transient protection
• Stud mount configuration for efficient heat dissipation

Single Diodes Applications

• Industrial power supply rectification
• Welding equipment circuits
• Motor drive systems

Single Diodes Procurement Notes

Verify the specific suffix designation (e.g., B or C) when ordering, as these variants may differ in packaging or minor specifications despite sharing the base part number. Confirm RoHS compliance status, as certain revisions of this component family are explicitly noted as non-compliant. Ensure that the procurement documentation matches the required voltage and current ratings for the target application circuit design.

Single Diodes Selection Notes

Select the 1N1203 variant based on the specific reverse voltage requirements and thermal management needs of the system. The DO-4 package necessitates appropriate mounting hardware for stud installation. Evaluate the forward voltage drop against efficiency targets and ensure the thermal interface can maintain the junction temperature within the specified operational limits under continuous load conditions.

Single Diodes Part Context

This component belongs to the 1N1203 series of standard recovery rectifiers manufactured by Microchip Technology. It is part of a broader portfolio of high-current diodes intended for industrial and automotive environments where reliability under harsh thermal conditions is critical. The series utilizes silicon planar technology to achieve consistent performance across varying operating temperatures.

Single Diodes Replacement Considerations

Direct substitutes include the 1N1203B and 1N1203C. Verify pinout compatibility and thermal resistance values before substitution. Ensure that any replacement component meets or exceeds the original 300 V reverse voltage and 25 A forward current ratings.