FESF8AT-E3/45

Single Diodes Overview

The FESF8AT-E3/45 is a general-purpose fast recovery rectifier manufactured by Vishay General Semiconductor - Diodes Division. It features an 8 A average forward current rating and a 50 V maximum repetitive peak reverse voltage. The device utilizes the TO-220AC through-hole package for efficient thermal management. Key electrical characteristics include a typical forward voltage of 1.3 V at 8 A and a maximum reverse leakage current of 10 µA at 50 V. The component supports a junction temperature range from -55°C to +150°C, ensuring reliable operation in demanding environments.

Single Diodes Feature Summary

• Fast recovery technology designed for high-speed switching applications
• Robust thermal performance via TO-220AC through-hole mounting
• Low forward voltage drop for improved energy efficiency
• High surge current capability for transient protection

Single Diodes Applications

• High-frequency DC-DC converters
• Free-wheeling diodes in power supplies
• Polarity protection circuits
• General-purpose rectification in industrial electronics

Single Diodes Procurement Notes

Verify the exact suffix against official Vishay documentation to confirm pinout and packaging specifications. Confirm RoHS compliance status as per the latest datasheet revision. Check for obsolescence notices or lifecycle changes before finalizing procurement plans. Ensure compatibility with existing thermal design constraints.

Single Diodes Selection Notes

Select this component when a fast recovery rectifier with moderate voltage ratings is required. The 50 V rating suits low-voltage DC bus applications. Consider the TO-220AC package for board-level mounting where space allows. Evaluate thermal resistance requirements based on the specific circuit's heat dissipation needs.

Single Diodes Part Context

This part belongs to the FES(F,B)8 series of fast recovery rectifiers from Vishay. The series offers various voltage ratings within the same physical footprint. The 'E3' suffix indicates lead-free termination compliant with EU directives. The '45' suffix typically denotes tube packaging.

Single Diodes Replacement Considerations

Direct substitutes include other Vishay parts in the FES8 series with matching voltage and current ratings, such as FES8BT-E3/45 (100V) if higher voltage margin is acceptable. Cross-brand replacements must match the TO-220AC package and fast recovery characteristics.