1N1127A

Single Diodes Overview

The 1N1127A is a single-element silicon rectifier diode designed for power applications. It features a maximum average forward rectified current of 12 A and a repetitive peak reverse voltage of 500 V. The device utilizes a DO-203AA (DO-4) glass-metal package with stud mount configuration. Electrical characteristics include a maximum non-repetitive peak forward surge current of 250 A, a maximum forward voltage of 1.2 V, and an operating junction temperature range from -65 °C to +200 °C.

Single Diodes Feature Summary

• High thermal stability with extended operating junction temperature up to 200 °C
• Robust surge current handling capability for transient protection
• Glass-metal sealed construction for environmental durability

Single Diodes Applications

• Power supply rectification circuits
• Industrial equipment power stages
• General-purpose high-current rectification

Single Diodes Procurement Notes

Verify the specific manufacturer source document when procuring, as component specifications may vary between original manufacturers and subsequent licensees. Confirm that the DO-203AA package dimensions and terminal configurations match the design requirements. Ensure compliance with project-specific material restrictions, noting that this component may not meet all modern environmental directives depending on the production batch and origin.

Single Diodes Selection Notes

Select the 1N1127A for designs requiring standard recovery performance with high current capacity in a ruggedized package. Evaluate the thermal management needs given the 200 °C junction limit and the 1.2 V forward voltage drop at rated current. Compare against alternative packages if board space constraints differ from the stud-mount form factor.

Single Diodes Part Context

This component belongs to the legacy 1N series rectifier lineup, historically significant in industrial electronics. Microchip Technology continues to support this part number through acquisition of former semiconductor assets. The 1N1127A represents a specific voltage and current rating within the broader family of DO-4 packaged silicon rectifiers.

Single Diodes Replacement Considerations

Cross-reference with other 1N1127 variants or equivalent 12 A / 500 V DO-203AA rectifiers from other manufacturers. Verify pinout compatibility and thermal resistance values before substitution.