1N5818

Overview

The Microchip Technology 1N5818 is a silicon Schottky barrier rectifier designed for low voltage and high frequency applications. It features an average forward rectified current of 1 A and a maximum repetitive peak reverse voltage of 30 V. The device utilizes a DO-204AL (DO-41) axial leaded package, ensuring compatibility with standard through-hole mounting processes. Key electrical characteristics include a low forward voltage drop and negligible switching losses, which contribute to high efficiency in power conversion circuits.

Feature Summary

• Metal silicon junction construction enabling majority carrier conduction for minimal switching losses
• Guard ring design incorporated to provide protection against overvoltage conditions
• Low forward voltage drop characteristic that reduces power loss during conduction
• High surge current capability suitable for handling transient load demands

Applications

• Free wheeling diodes in inductive load circuits
• Polarity protection in DC power input stages
• Low voltage high frequency inverters
• Small battery charger circuits

Procurement Notes

Verify the specific manufacturer source when sourcing this component, as multiple vendors produce the 1N5818 specification. Confirm RoHS compliance status and package variant details directly with the supplier. Ensure the selected unit matches the required DO-204AL form factor for your assembly process. Cross-reference datasheets from different manufacturers to confirm exact electrical tolerances before finalizing procurement.

Selection Notes

Select this component for designs requiring efficient rectification at low voltages where speed is critical. The 30 V rating provides adequate margin for most 5 V or 12 V systems. Consider the thermal performance and derating requirements for the DO-41 package under continuous load conditions. Verify that the forward voltage specifications align with your system's efficiency targets.

Part Context

This part belongs to the widely recognized 1N58xx series of Schottky rectifiers. These components are standard industry replacements for general-purpose low-voltage rectification tasks. The 1N5818 specifically offers a 30 V breakdown voltage, distinguishing it from higher voltage variants like the 1N5819. It serves as a fundamental discrete semiconductor device in power management architectures.

Replacement Considerations

Direct substitutes include the STMicroelectronics 1N5818 and Taiwan Semiconductor SR103B0G. Verify pinout compatibility and electrical parameter equivalence before substitution.