1N5391

Overview

The Diotec Semiconductor 1N5391 is a standard recovery rectifier diode designed for general-purpose applications. It features an average forward rectified current (IFAV) of 1.5 A and a repetitive peak reverse voltage (VRRM) of 50 V. The device exhibits a maximum forward voltage drop (VF) of less than 1.3 V at 25°C and 1.5 A. Peak forward surge current capabilities are rated at 50 A for 50 Hz half-sine waves and 55 A for 60 Hz. Reverse leakage current remains below 5 µA at 25°C and under 50 µA at 100°C. The component operates within a junction temperature range of -50°C to +175°C.

Feature Summary

• Utilizes glass-passivated junction structure for high reliability
• Provides low forward voltage drop characteristics
• Features low leakage current performance
• Supports high forward surge current capability

Applications

• General-purpose rectification
• Free-wheeling diode circuits
• Low-frequency power supply designs

Procurement Notes

Verify the specific manufacturer source, as Vishay also produces this part number with potentially different compliance markings. Confirm RoHS status and lead-free suffix requirements (-LF or -E3) against project specifications. Ensure the DO-15 package dimensions match the target PCB layout. Validate that the standard commercial grade meets the required environmental and reliability standards for the intended application environment.

Selection Notes

Select this component when a 1.5 A current rating and 50 V blocking voltage are required in a through-hole DO-15 package. Consider the typical 1500 ns reverse recovery time for suitability in standard frequency applications. Evaluate thermal resistance parameters if operating near maximum ambient temperatures. Compare against higher voltage variants in the 1N539x series if system design margins require increased reverse voltage tolerance.

Part Context

The 1N5391 belongs to the 1N5391 through 1N5399 series of standard recovery rectifier diodes manufactured by Diotec Semiconductor. This family shares identical mechanical packaging and electrical current ratings, differing primarily in their repetitive peak reverse voltage ratings which range from 50 V up to 1000 V across the series.

Replacement Considerations

Cross-reference with Vishay 1N5391GP/70 or 1N5391GP/56-E3 for equivalent electrical specifications. Verify package compatibility and terminal solderability standards before substitution.