1N5406

Overview

The SMC Diode Solutions 1N5406 is a general-purpose silicon rectifier diode designed for high current applications. It features an average forward rectified current of 3.0 A and a maximum repetitive peak reverse voltage of 600 V. The device utilizes a DO-201AD axial leaded plastic package with isolated case construction. Key electrical characteristics include a maximum non-repetitive peak forward surge current of 200 A, a maximum DC reverse leakage current of 5.0 µA at rated voltage, and a maximum forward voltage drop of 1.2 V at 3.0 A. The component supports a maximum junction temperature of 150 °C.

Feature Summary

• High forward surge capability for handling transient loads
• Low leakage current to minimize power loss in reverse bias
• Molded epoxy body meeting UL-94V-0 flammability rating

Applications

• General purpose rectification in power supplies
• Inverter and converter circuits
• Freewheeling diode applications

Procurement Notes

Verify the specific manufacturer source when sourcing this component, as multiple vendors produce the 1N5406 specification. Confirm that the received parts match the DO-201AD package dimensions and lead plating requirements. Ensure compliance with RoHS directives if environmental standards are required for the assembly process. Check datasheets for any variations in surge current ratings between different production batches or manufacturers.

Selection Notes

Select the 1N5406 for circuits requiring robust 3 A continuous current handling with 600 V blocking capability. This component is suitable for designs needing high thermal stability up to 150 °C junction temperature. Consider its axial leaded form factor for through-hole mounting on printed circuit boards where surface mount alternatives are not feasible. Evaluate the low leakage current benefits for efficiency-sensitive power conversion stages.

Part Context

The 1N5406 belongs to the widely recognized 1N540x series of general-purpose silicon rectifiers. This family includes variants ranging from 50 V to 1000 V reverse voltage ratings while maintaining a consistent 3.0 A average forward current capacity. The series is standardized across major semiconductor manufacturers, ensuring interchangeability in legacy and new designs utilizing the DO-201AD package.

Replacement Considerations

Direct substitutes include other manufacturers' 1N5406 components such as Vishay 1N5406-E3/58 or Gulf Semiconductor equivalents. Verify that replacement parts maintain the same DO-201AD footprint and 600 V / 3 A ratings. Cross-reference datasheets for minor differences in forward voltage or surge current specifications.