1N1343B

Single Diodes Overview

The Microchip Technology 1N1343B is a single-element rectifier diode housed in a DO-203AA (DO-4) through-hole package. It features a maximum repetitive peak reverse voltage of 150V and an average forward current rating of 6A, with some sources citing a higher 16A rating for specific conditions. The device exhibits a maximum non-repetitive peak forward surge current of 150A and a maximum forward voltage drop of 1.1V to 1.3V. It operates within a junction temperature range of -65°C to 190°C or 200°C.

Single Diodes Feature Summary

• High thermal stability with an elevated maximum junction temperature rating
• Robust surge current handling capability for transient protection
• Standard axial leaded construction for reliable mechanical mounting

Single Diodes Applications

• General purpose rectification in power supplies
• Industrial control systems requiring high reliability
• Automotive electronics applications

Single Diodes Procurement Notes

Verify the manufacturer source carefully, as multiple vendors including Powerex, Solid State Inc., and Beechcraft list this part number. Confirm the specific electrical ratings, particularly the forward current capacity (6A vs 16A), and package details against your design requirements before ordering. Ensure compliance with RoHS standards if required by your application specifications.

Single Diodes Selection Notes

Select this component when a rugged, high-temperature silicon rectifier is needed for general-purpose applications. Consider the DO-4 package constraints for board space and mounting method. Evaluate the 150V reverse voltage rating against the circuit's peak inverse voltage to ensure adequate safety margins under all operating conditions.

Single Diodes Part Context

This part belongs to the standard 1N series of rectifier diodes, widely used in legacy and industrial designs. Microchip Technology acquired assets from companies like New Jersey Semi-Conductor Products, which originally produced similar devices. The 1N1343B represents a robust discrete semiconductor solution for medium-power rectification tasks.

Single Diodes Replacement Considerations

Equivalent parts include the 1N1343 and other generic 150V 6A/16A rectifiers in DO-4 packages. Verify pinout compatibility and thermal characteristics when substituting.