1N5818-1/TR

Overview

The Microchip Technology 1N5818-1/TR is a silicon Schottky barrier rectifier designed for low voltage, 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 metal-silicon junction with majority carrier conduction to ensure extremely fast switching and negligible switching losses. Packaged in the DO-41 axial leaded format, it offers a low forward voltage drop and high surge capability, making it suitable for polarity protection and free-wheeling duties.

Feature Summary

• Metal-silicon junction construction enabling majority carrier conduction for minimal switching noise
• Guard ring design incorporated to provide overvoltage protection capabilities
• Low forward voltage drop characteristic ensuring very small conduction losses
• High surge current capability specified for robust performance under transient conditions

Applications

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

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm tape and reel packaging specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and traceability before procurement.

Selection Notes

Select this component when a low forward voltage drop and fast switching speed are required in a through-hole axial package. The 30 V rating suits low voltage DC systems. Consider thermal derating guidelines for high ambient temperatures. Verify that the 1 A continuous current rating aligns with the circuit's steady-state load requirements.

Part Context

This part belongs to the 1N58xx series of axial power Schottky rectifiers manufactured by Microchip Technology. The series is characterized by its suitability for switch mode power supplies and high-frequency DC-to-DC converters. The DO-41 package provides a standardized footprint for general-purpose rectification tasks requiring low loss and high reliability.

Replacement Considerations

Compatible substitutes include the 1N5817 (20 V rating) and 1N5819 (40 V rating) from the same series. Other manufacturers producing equivalent 1 A, 30 V Schottky rectifiers in DO-41 packages may also serve as functional replacements if electrical parameters match.