LQR2W472MSEJBN

The LQR2W472MSEJBN from Nichicon is a screw-terminal aluminum electrolytic capacitor in the LQR series, rated at 4700 µF (4.7 mF) and 450 V. It is designed for high-speed charge–discharge operation and for use in high-frequency regenerative and inverter power environments.

Typical applications include AC servomotor regenerative circuits, general inverters and rectifier circuits such as voltage doublers. The part combines high voltage capability, high ripple tolerance and a screw-terminal package for robust mounting and current handling.

Key Features

• Capacitance & Voltage — 4700 µF (4.7 mF) nominal capacitance with a 450 V rated voltage and ±20% tolerance at 120 Hz, 20°C.
• High-speed charge–discharge capability — Engineered for repeated charge–discharge behavior; meets endurance requirements after 20 million cycles (ΔV = rated voltage × 0.3, 3 Hz) as specified in the LQR series data.
• High ripple current handling — Rated ripple current of 15.8 A at 120 Hz and 22.12 A at 10 kHz to support both low- and high-frequency power stresses.
• Screw terminal, radial can package — Screw-terminal mounting for secure electrical and mechanical connections; radial can body with screw terminals suited to industrial power assemblies.
• Operating range & endurance — Rated for operation from −25°C to +85°C with an endurance of 5000 hours at 85°C under rated bias and ripple conditions.
• Leakage, dissipation and reliability characteristics — Meets LQR series specifications for leakage current, tan δ stability and endurance after long-term DC bias plus ripple application.
• Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).
• Identification — Marked with white lettering on a dark brown sleeve for clear part identification.

Typical Applications

• AC servomotor regenerative circuits — Handles high-frequency regenerative voltage and frequent charge–discharge events encountered in motor drive systems.
• General inverters — Provides bulk energy storage and high ripple current capability for inverter DC link and smoothing stages.
• Voltage-doubler rectifier circuits — Suitable for rectifier and voltage-doubler topologies that require high-voltage capacitance and repeated charge cycles.
• Equipment in fluctuating-voltage environments — Designed to withstand voltage fluctuations while maintaining capacitance and leakage performance over rated lifetime.

Unique Advantages

• High-voltage capability: 450 V rating enables use in high-voltage DC link and rectifier topologies without additional series stacking.
• Designed for repeated cycling: Specified endurance for 20 million charge–discharge cycles helps ensure reliability in applications with frequent regenerative events.
• Broad ripple performance: Measured ripple current figures at both 120 Hz and 10 kHz support mixed-frequency power electronics workloads.
• Robust mounting and current handling: Screw-terminal, radial can package provides secure electrical connection and mechanical stability for industrial installations.
• Long-term thermal endurance: 5000 hours at 85°C under rated conditions provides predictable life characteristics for elevated-temperature operation.
• Regulatory compliance: RoHS conformity supports use in systems requiring restricted-substance compliance.

Why Choose LQR2W472MSEJBN?

The LQR2W472MSEJBN combines high capacitance, a 450 V rating and explicit high-frequency ripple performance in a screw-terminal aluminum electrolytic form factor tailored to power-electronics applications. Its endurance specifications and charge–discharge behavior are defined to support repeated regenerative and inverter duty cycles, making it suitable for industrial motor drives, inverters and rectifier circuits subject to voltage fluctuations.

As part of Nichicon's LQR series, this capacitor delivers verifiable performance parameters for engineers and procurement teams seeking a durable, RoHS-compliant solution for high-voltage, high-ripple energy storage requirements.

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