1N4931

Overview

The Microchip Technology 1N4931 is a general-purpose silicon rectifier diode designed for high-voltage applications. It features a maximum repetitive peak reverse voltage of 1000V and a continuous forward current rating of 1.0A at 25°C. The device utilizes a DO-41 axial leaded package, providing robust mechanical stability for through-hole mounting. Key electrical characteristics include a low forward voltage drop and fast recovery time, making it suitable for various power supply and protection circuits.

Feature Summary

• High voltage capability with 1000V reverse voltage rating
• General-purpose rectification for standard power applications
• Robust axial leaded construction for reliable mounting

Applications

• Power supply rectification
• Inverter freewheeling
• Protection circuits

Procurement Notes

Verify the specific manufacturer lot code and date code upon receipt to ensure component authenticity and traceability. Confirm that the physical markings on the diode body match the official datasheet specifications exactly. Check for any damage to the leads or package integrity before installation. Ensure storage conditions comply with moisture sensitivity levels if applicable.

Selection Notes

Select this component when a 1000V reverse voltage rating is required for general-purpose rectification tasks. Consider the thermal management requirements for the DO-41 package in high-current environments. Evaluate the forward voltage drop impact on overall system efficiency compared to Schottky alternatives if lower loss is critical.

Part Context

This part belongs to the standard 1N400x series family of silicon rectifiers, widely used in industrial and consumer electronics. It serves as a common replacement for older glass-passivated diodes in legacy designs. The 1N4931 specifically offers higher voltage tolerance than lower-rated variants within the same series.