Capacitor Rebel URZ3139 55µF 450V — electrolytic power capacitor

Rebel URZ3139 is a 55µF, 450V electrolytic power capacitor designed for use in power electronics where compact energy storage and reliable smoothing are required. Built for smoothing DC bus voltages and reducing ripple in power supplies, inverters and motor drives, this capacitor offers a balance of capacitance and voltage rating suitable for many industrial and OEM applications. The product is intended for situations that call for a 55µF/450V electrolytic capacitor to support stable operation and improved electromagnetic compatibility.

Advantages

This electrolytic power capacitor delivers stable capacitance and a high voltage rating in a compact form factor, enabling effective smoothing of supply rails and transient absorption. Its construction is optimized for power-electronic environments, providing low equivalent series resistance (ESR) characteristics and predictable performance under continuous DC bias. The capacitor is suitable for replacement and OEM installations where consistent ripple reduction and voltage stabilization are needed.

Suitable for

• Smoothing DC bus voltages in switch-mode power supplies and inverters
• Energy buffering and transient suppression in motor drives and servo controllers
• Replacement of 55µF/450V electrolytic capacitors in industrial control equipment
• Applications requiring capacitor banks for bulk energy storage and ripple filtering

Key specifications

• Capacitance: 55 µF
• Rated voltage: 450 V DC
• Polarization: polarized electrolytic type
• Intended application: power electronics — smoothing and energy storage
• Typical electrical role: ripple reduction, transient absorption and DC bus stabilization

How to use

Install the capacitor observing correct polarity and ensure the rated voltage is not exceeded. Mount the component securely according to the device manufacturer's mechanical and thermal recommendations, allowing adequate ventilation and clearance from heat sources. When replacing an existing capacitor, match capacitance and voltage ratings and verify physical fit and terminal type before soldering or fastening. Follow standard safety practices: discharge capacitors before service and use insulated tools when performing connections.

Usage recommendations

Use this 55µF 450V electrolytic capacitor in circuits where a polarized capacitor is appropriate. For long-term reliability, avoid prolonged exposure to temperatures above the capacitor's specified maximum operating temperature and minimize ripple current beyond rated limits. When designing capacitor banks, consider balancing and derating to improve lifespan and ensure compatibility with the system's voltage and ripple current requirements.