1N3902

Single Diodes Overview

The Microchip Technology 1N3902 is a standard rectifier diode designed for general-purpose applications. It features a through-hole mounting style and utilizes the DO-4 package configuration. The device supports an average forward current of 1.0 A with a peak repetitive reverse voltage rating of 50 V. Key electrical characteristics include a maximum RMS voltage of 35 V, a DC blocking voltage of 50 V, and a maximum reverse leakage current of 5 µA at rated voltage. The component operates within a junction temperature range of -65°C to +175°C and exhibits a low forward voltage drop of 1.1 V at 1.0 A.

Single Diodes Feature Summary

• Provides reliable rectification in general-purpose circuits
• Supports high operating temperatures up to 175°C
• Features low forward voltage drop for efficiency

Single Diodes Applications

• General-purpose rectification
• Polarity protection
• Reverse battery protection

Single Diodes Procurement Notes

Verify the specific suffix (e.g., R, AR) required for your design, as these indicate variations in packaging or testing standards. Confirm RoHS compliance status, as historical data suggests some variants may not meet current environmental directives. Ensure the selected package matches your PCB footprint requirements. Cross-reference datasheets for exact thermal resistance values if thermal management is critical to your application.

Single Diodes Selection Notes

Select this component when a robust, high-temperature silicon rectifier is needed for moderate current levels. Compare against similar 1N400x series parts if higher surge ratings are required. Consider the DO-4 package dimensions during layout. Verify that the 50 V reverse voltage rating exceeds the maximum circuit voltage with adequate margin. Evaluate thermal dissipation capabilities based on ambient conditions.

Single Diodes Part Context

The 1N3902 belongs to the legacy 1N39xx series of glass-passivated silicon junction rectifiers manufactured by Microchip Technology. This series is widely recognized for its reliability in industrial and commercial electronics. The part is often grouped with other standard rectifiers like the 1N4001. It serves as a fundamental discrete semiconductor component for power supply and signal conditioning tasks.

Single Diodes Replacement Considerations

Direct substitutes include the 1N3901 (lower voltage) or 1N3903 (higher voltage). Generic equivalents such as the 1N4001 share similar electrical profiles but may differ in package and surge ratings. Verify pinout compatibility and thermal performance before substitution.