1N1125R

Single Diodes Overview

The Microchip Technology 1N1125R is a standard recovery rectifier diode designed for general-purpose applications. It features a single-phase, single-element configuration housed in a DO-4 (DO-203AA) package with stud mount capability. Key electrical parameters include a maximum repetitive reverse voltage of 300V and an average forward rectified current of 12A. The device exhibits a maximum forward voltage drop of 1.2V at rated current and a maximum non-repetitive peak surge current of 100A. Operating temperatures range from -65°C to +150°C junction temperature, ensuring reliability in demanding environments.

Single Diodes Feature Summary

• Hermetically sealed glass-metal DO-4 package for environmental protection
• Stud mount configuration for efficient thermal dissipation
• Standard recovery characteristics suitable for general rectification
• High thermal stability across extended temperature ranges

Single Diodes Applications

• DC power supply rectification circuits
• Industrial motor drive freewheeling paths
• Battery charging systems
• General purpose DC circuit protection

Single Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm exact electrical tolerances and packaging options. Ensure the procurement channel provides traceability documentation required for military or aerospace specifications if applicable. Confirm that the received components match the DO-4 package dimensions and terminal configurations specified in the mechanical drawings before integration into production assemblies.

Single Diodes Selection Notes

Select this component when a robust, high-current rectifier with proven hermetic sealing is required. The 12A rating and 300V blocking voltage make it suitable for medium-power industrial applications. Consider the stud mount requirement for heatsinking infrastructure during PCB or chassis design. Compare leakage current and recovery time specifications against alternative parts if fast-switching performance is critical for the specific application topology.

Single Diodes Part Context

The 1N1125R belongs to the legacy 1N series of rectifier diodes manufactured by Microchip Technology. This series is widely recognized for its reliability in harsh environments due to the hermetic DO-4 package construction. The part serves as a direct replacement for older designs utilizing equivalent JEDEC-rated silicon rectifiers, maintaining compatibility with established industrial and military electronic systems requiring durable power conversion components.

Single Diodes Replacement Considerations

Direct substitutes include the JANTX1N1125AR from SSDI, which shares similar electrical ratings and hermetic DO-4 packaging. Verify pinout compatibility and thermal resistance values when cross-referencing with other manufacturers' equivalents to ensure seamless integration without redesigning the mounting hardware.