1N1191A

Single Diodes Overview

The Microchip Technology 1N1191A is a standard recovery rectifier diode designed for high-power applications. It features a maximum repetitive peak reverse voltage of 50 V and an average forward rectified current rating of 40 A. The device utilizes a stud mount configuration within a DO-203AB (DO-5) package. Key electrical characteristics include a maximum forward voltage drop of 1.19 V at rated current and a maximum non-repetitive surge current capability of 800 A. The component operates reliably across a junction temperature range from -65 °C to +200 °C, with a maximum reverse leakage current of 10 µA.

Single Diodes Feature Summary

• High thermal stability enabling operation up to a junction temperature of +200 °C
• Robust surge current handling capacity for transient protection in power circuits
• Stud mount construction optimized for efficient heat dissipation in high-current scenarios

Single Diodes Applications

• Industrial power supply rectification
• Battery charging systems
• DC motor drive circuits

Single Diodes Procurement Notes

Verify the specific datasheet revision and manufacturing date code upon order confirmation. Confirm compliance requirements such as RoHS status, as indicated in official documentation. Ensure mounting hardware specifications match the stud mount interface. Validate that the 50 V reverse voltage rating aligns with the target circuit design parameters before finalizing procurement.

Single Diodes Selection Notes

Select this component when a 40 A continuous current rating and 50 V blocking voltage are required. The DO-203AB package necessitates appropriate heatsinking strategies due to the stud mount form factor. Consider the 1.19 V forward voltage drop for efficiency calculations in low-voltage, high-current applications. Ensure the operating environment supports the specified wide temperature range capabilities.

Single Diodes Part Context

The 1N1191A belongs to the legacy 1N11xx series of silicon rectifiers manufactured by Microchip Technology. This series is characterized by rugged construction suitable for demanding industrial environments. The part shares physical dimensions with other variants in the family but differs in voltage and current ratings. It serves as a replacement for older industry-standard rectifier designs requiring high reliability.

Single Diodes Replacement Considerations

Cross-reference with 1N1193A or 1N1189A if higher voltage ratings are acceptable. Verify pinout compatibility and thermal resistance values when substituting. Ensure the alternative device meets the same 40 A current and +200 °C temperature requirements.