1N1343A

Single Diodes Overview

The 1N1343A is a standard rectifier diode manufactured by Microchip Technology. It features a maximum repetitive peak reverse voltage of 200 V and an average forward rectified current rating of 16 A. The device utilizes a DO-4 (DO-203AA) axial leaded package designed for stud or chassis mounting. It operates within a junction temperature range of -65°C to +200°C. The component exhibits a maximum forward voltage drop of 1.3 V at 30 A and maintains a low reverse leakage current of 10 µA at 200 V.

Single Diodes Feature Summary

• High thermal stability with a maximum junction temperature of 200°C
• Robust mechanical construction suitable for stud or chassis mounting applications
• Standard recovery characteristics for general-purpose power rectification

Single Diodes Applications

• Industrial power supply rectification circuits
• Battery charging systems requiring high current handling
• Welding equipment power stages

Single Diodes Procurement Notes

Verify the specific datasheet revision when ordering, as manufacturing changes may affect marking or minor physical dimensions. Confirm that the DO-4 package style matches the intended mounting hardware. Ensure the application environment supports the required thermal dissipation for the 16 A continuous current rating without exceeding the 200°C junction limit.

Single Diodes Selection Notes

Select this component for applications requiring high surge current capability and robust packaging over surface-mount alternatives. Compare the 200 V reverse voltage rating against the circuit's peak inverse voltage requirements. Consider the thermal resistance of the mounting interface, as the DO-4 package relies on external heatsinking or chassis contact for effective heat removal during high-load operation.

Single Diodes Part Context

This part belongs to the legacy 1N series of silicon rectifiers produced by Microchip Technology. These components are characterized by their rugged axial leaded construction and high current capacity. They serve as reliable solutions for industrial environments where through-hole mounting and high thermal endurance are critical design constraints.

Single Diodes Replacement Considerations

Direct substitutes include the 1N1344 and 1N1345 from the same manufacturer family. Cross-brand equivalents must match the 16 A current rating, 200 V reverse voltage, and DO-4 package form factor to ensure compatibility.