RU4 Fast Recovery Rectifier Diode – 3.5A 600V (5 Piece Set)

Product Overview

The RU4 is a specialized Fast Recovery Diode (FRD) used in the high-frequency switching stages of modern power supplies. Unlike standard rectifiers which are too slow for modern SMPS, the RU4 can switch thousands of times per second with minimal ‘reverse recovery’ issues. This ensures that your power supply operates at peak efficiency and stays cool. With its robust 3.5A current rating, it is the ideal component for primary and secondary side rectification in display equipment.

Key Features

• Fast Recovery Time: Optimized for high-frequency switching power supplies.
• 3.5 Amp Forward Current: Handles high-power display loads with ease.
• 600V Peak Inverse Voltage (PIV): Built for high-voltage stability.
• Low Heat Generation: Fast switching minimizes thermal energy loss.
• 5 Piece Set: Essential stock for professional display repair shops.

Benefits

Replacing a standard diode with the RU4 in a high-frequency circuit prevents overheating and failure of the power stage. It is a critical replacement part for technicians dealing with ‘dead’ SMPS or flickering display units. Its high current capacity provides a better safety margin than smaller 2A or 3A fast diodes. For DIYers, it’s the perfect rectifier for high-speed power conversion projects. Upgrade your repair standards with our genuine RU4 series diodes.

Technical Specifications

• Part Number: RU4 / RU4B
• Current Rating: 3.5 Amps
• Voltage Rating: 600V
• Type: Fast Recovery Diode (FRD)
• Package: Axial lead

Applications

SMPS for TVs and Monitors, High-frequency inverters, ultrasonic equipment, and high-wattage DC adapters.

Package Contents

5 x RU4 Fast Recovery Rectifier Diodes.

Why Buy This Product?

EDEPOT INDIA provides genuine RU4 diodes that meet the high-speed demands of modern electronics. We ensure our parts are checked for electrical integrity to ensure a successful repair.

Frequently Asked Questions

Q: My original part was an RU3, can I use an RU4?
A: Yes! The RU4 is a higher current version of the RU3 and will provide a more robust and reliable fix.
Q: Is this suitable for 50Hz AC mains?
A: It will work, but it is over-engineered for standard 50Hz. Its real benefit is in circuits switching at 20kHz or higher.