1N5817

Overview

The Microchip Technology 1N5817 is a single axial lead Schottky rectifier housed in the DO-204AL (DO-41) through-hole package. It features a maximum repetitive peak reverse voltage of 20 V and an average forward rectified current rating of 1 A. The device exhibits a low forward voltage drop, typically 450 mV at 1 A, with a maximum surge forward current capability of 25 A. Operating junction temperatures range from -65°C to 150°C, ensuring reliability in high-temperature environments.

Feature Summary

• Schottky barrier construction provides extremely fast switching speeds and negligible switching losses.
• Low forward voltage drop minimizes conduction losses for improved efficiency.
• Specified avalanche capability allows for robust performance under transient conditions.

Applications

• Switch Mode Power Supplies (SMPS)
• High frequency DC to DC converters
• Low voltage high frequency inverters
• Free wheeling diodes
• Polarity protection circuits

Procurement Notes

Verify the specific manufacturer suffix, such as 'G', as it may indicate packaging or assembly site variations without altering electrical function. Confirm RoHS compliance status directly with the supplier, as historical data indicates mixed compliance records across different production batches and sources. Ensure the component matches the required DO-41 axial lead form factor for your PCB layout.

Selection Notes

Select this component when a low-cost, through-hole Schottky rectifier is required for 20 V applications. It serves as a direct replacement for standard 1N5817 specifications found across multiple manufacturers. Consider the 1 A current limit and 25 A surge rating against your circuit's peak load requirements. Verify thermal management needs given the 150°C maximum junction temperature rating.

Part Context

The 1N5817 belongs to a widely recognized family of 1 Ampere Schottky rectifiers. While originally standardized, the part number is now produced by various semiconductor vendors including ON Semiconductor, STMicroelectronics, and Taiwan Semiconductor. Microchip Technology offers this device as part of their discrete diode portfolio, maintaining compatibility with legacy designs requiring axial lead mounting.

Replacement Considerations

Cross-reference with other manufacturers' 1N5817 parts for pin-compatible substitution. Verify that alternative sources meet the same 20 V reverse voltage and 1 A forward current ratings. Check if specific suffixes on competitor parts denote different packaging or compliance standards.