1N5817

Overview

The Diotec Semiconductor 1N5817 is a Schottky Barrier Rectifier Diode designed for standard commercial and industrial applications. It features an average forward current rating of 1 A and a repetitive peak reverse voltage of 20 V. The device utilizes a DO-41 axial lead package with a plastic molding compound rated UL 94 V-0 for flammability. Key electrical characteristics include a maximum forward voltage of less than 0.75 V at 3.0 A, typical junction capacitance of 80 pF at 4 V, and low leakage current. It supports a peak forward surge current of up to 40 A (50 Hz) or 44 A (60 Hz). Operating temperatures range from -50°C to +150°C for the junction and -50°C to +175°C for storage.

Feature Summary

• Schottky barrier construction provides low forward voltage drop and high efficiency
• Guard ring protection design ensures robust transient performance
• Plastic encapsulation meets UL 94 V-0 flammability classification standards

Applications

• Free-wheeling rectification in power circuits
• Polarity protection for sensitive electronic components
• Output rectification in switching power supplies

Procurement Notes

Verify that the specific component variant matches the required 20 V reverse voltage rating, as the 1N5817 series includes higher voltage options like the 1N5818 and 1N5819. Confirm compliance with RoHS directives if restricted substances are prohibited in your assembly process. Ensure the ordering suffix corresponds to the desired packaging format, such as tape and reel or bulk, to align with automated placement requirements.

Selection Notes

Select this component when a low forward voltage drop is critical for minimizing power loss in 1 A circuits. The DO-41 through-hole package is suitable for general-purpose boards where surface mount space is not constrained. Consider the thermal resistance values when designing heat dissipation strategies for enclosed environments to maintain junction temperature within safe operating limits.

Part Context

This part belongs to the 1N5817 through 1N5819 family of Schottky Barrier Rectifiers manufactured by Diotec Semiconductor. While sharing similar physical dimensions and basic operational principles, each variant differs primarily in its maximum repetitive peak reverse voltage rating. This specific model represents the lowest voltage option in the series, optimized for low-voltage DC applications requiring fast switching and minimal conduction losses.

Replacement Considerations

Cross-reference with other manufacturers' 1N5817 equivalents to ensure pinout compatibility and thermal performance alignment. Verify that substitute parts meet the same UL 94 V-0 flammability rating and RoHS compliance status to maintain regulatory adherence.