1N5817H

Overview

The Taiwan Semiconductor Corporation 1N5817H is a silicon Schottky barrier rectifier designed for high-efficiency power conversion applications. It features a maximum average forward rectified current of 1 A and a repetitive peak reverse voltage rating of 20 V. The device utilizes a DO-41 axial leaded package, suitable for through-hole mounting on printed circuit boards. Key electrical characteristics include a low forward voltage drop of up to 750 mV at rated current and a maximum non-repetitive peak forward surge current capability of 30 A. The component operates reliably within a junction temperature range from -65 °C to +125 °C.

Feature Summary

• Schottky barrier construction provides low forward voltage drop and minimal power loss for improved system efficiency.
• Guard ring protection enhances device stability and reliability under various operating conditions.
• Epoxy casing meets UL 94 V-0 flammability ratings for safety compliance in electronic assemblies.

Applications

• High-frequency switching power supplies
• Free-wheeling diodes in DC-DC converters
• Polarity protection circuits

Procurement Notes

Verify the specific manufacturer suffix against the official datasheet to confirm exact electrical tolerances and packaging specifications. Ensure the ordered component matches the required voltage and current ratings for the target application. Confirm RoHS compliance status if environmental regulations apply to the final product assembly.

Selection Notes

Select this component when a low forward voltage drop is critical for minimizing conduction losses in rectification paths. The DO-41 package is appropriate for designs requiring robust through-hole mounting with standard axial leads. Consider the thermal resistance and ambient operating temperature limits to ensure safe junction temperatures during peak load conditions.

Part Context

This part belongs to the 1N581x series of Schottky rectifiers, which are widely used in general-purpose rectification tasks. The series offers variants with different reverse voltage ratings while maintaining consistent current handling capabilities. The 1N5817H specifically addresses applications requiring 20 V blocking capability with efficient high-speed recovery characteristics typical of Schottky technology.

Replacement Considerations

Compatible substitutes include the 1N5817 from other manufacturers such as onsemi or Micro Commercial Components, provided they meet the same 1 A current and 20 V voltage ratings in a DO-41 package. Verify pinout compatibility and thermal performance before substitution.