BYV29-400HE3/45

Overview

The BYV29-400HE3/45 is a standard rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. It features a peak repetitive reverse voltage (Vrrm) of 400 V and a maximum average forward rectified current (If) of 8 A. The device utilizes a TO-220AC through-hole package with three pins. Key electrical parameters include a maximum forward voltage (Vf) of 1.25 V at 8 A, a peak reverse current (Ir) of 5 uA, and a non-repetitive peak forward surge current (Ifsm) of 125 A. It operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Standard recovery characteristics suitable for general-purpose rectification applications
• Robust construction in a TO-220AC through-hole package for reliable thermal management
• Compliant with RoHS standards and free from halogenated substances

Applications

• General-purpose rectification in power supply circuits
• Freewheeling diodes in inductive load switching
• DC-DC converter output stages

Procurement Notes

Verify the exact part number suffix against official Vishay documentation to ensure correct packaging and compliance status. Confirm that the TO-220AC package dimensions match your PCB footprint requirements. Check for specific environmental certifications if required by your manufacturing process. Ensure compatibility with your assembly equipment for through-hole mounting.

Selection Notes

Select this component when a 400 V reverse voltage rating and 8 A continuous current capacity are required. Consider the TO-220AC package for applications needing robust mechanical mounting and heat dissipation via a heatsink. Evaluate the 1.25 V forward voltage drop for efficiency constraints in low-voltage output stages. Compare thermal resistance values against your system's cooling capabilities.

Part Context

This diode belongs to Vishay's standard rectifier lineup, designed for general electronic applications. It complements other Vishay diodes like the FES series for faster recovery needs or GBU series for bridge configurations. The TO-220AC form factor is common in industrial and consumer power supplies where through-hole reliability is prioritized over surface-mount density.

Replacement Considerations

Direct substitutes may include Vishay BYV29-400-E3/45 or equivalent 400V 8A TO-220AC diodes from other manufacturers such as STMicroelectronics or ON Semiconductor, provided pinout and thermal characteristics are identical.