1N5400

Overview

The 1N5400 is a general-purpose silicon rectifier diode manufactured by SMC Diode Solutions. It features a molded epoxy case that meets UL flammability classification 94V-0. The device is designed for use in AC-to-DC converter circuits and other power supply applications requiring high surge current capability. Key electrical specifications include a maximum average forward rectified current of 3.0 Amperes at 75°C ambient temperature, a peak repetitive reverse voltage of 50 Volts, and a non-repetitive peak forward surge current rating of 200 Amperes for a single half-sine wave of 8.3 milliseconds duration.

Feature Summary

• High surge current capability for robust performance in transient conditions
• Molded epoxy package offering mechanical strength and environmental protection
• Compliant with UL flammability standards for safety assurance

Applications

• AC to DC converter circuits
• General purpose rectification in power supplies
• Bypass protection for inductive loads

Procurement Notes

Verify the specific manufacturer marking and date code on received components to ensure authenticity from SMC Diode Solutions. Confirm that the part number matches the exact 1N5400 specification without suffix variations that might alter ratings. Request official datasheets or test reports from authorized distributors to validate compliance with published electrical characteristics before integration into production designs.

Selection Notes

Select this component when a standard 3A rectifier with a 50V reverse voltage rating is required. Ensure the operating junction temperature remains within specified limits to maintain reliability. Consider thermal management requirements based on the expected forward current and ambient conditions. Verify that the package style fits the available PCB footprint and mounting constraints of the target assembly.

Part Context

This component belongs to the widely recognized 1N54xx series of axial leaded rectifier diodes. It serves as a fundamental building block in low-to-medium power electronic circuits. The series offers various voltage ratings while maintaining consistent current handling capabilities, making it a common choice for designers needing reliable, cost-effective rectification solutions in consumer electronics and industrial equipment.

Replacement Considerations

Equivalent parts include the 1N5401 through 1N5408 series variants which share identical current ratings but differ in reverse voltage breakdown values. Other manufacturers produce pin-compatible alternatives such as the BYV26 or similar generic 3A rectifiers, provided the voltage and current specifications match the original design requirements exactly.