LQR2W332MSEH

The LQR2W332MSEH is an aluminum electrolytic capacitor in Nichicon’s LQR series, featuring a screw-terminal large-can package and a rated capacitance of 3.3 mF at 450 V. It is designed for 85°C high speed charge–discharge environments and is RoHS compliant.

Engineered for power-electronics use, the part is suited to high-frequency regenerative voltage applications such as AC servomotor drives and general inverters, and for equipment operating in areas with fluctuating voltages or rectifier circuits using voltage-doubler topologies.

Key Features

• High voltage / high capacitance: 3.3 mF nominal capacitance at a 450 V rating for bulk energy storage in power-conversion circuits.
• Screw-terminal can package: Radial can with screw terminals provides robust electrical and mechanical connections suitable for high ripple and charge–discharge duty.
• 85°C high speed charge–discharge: Specified for high-speed charge–discharge operation at elevated temperature to support regenerative and inverter applications.
• Wide operating temperature: Rated for −25°C to +85°C to cover typical industrial power environments.
• Endurance and lifecycle: Rated lifetime of 5000 hours at 85°C; also specified for endurance under repeated charge–discharge (20 million cycles at ΔV = rated × 0.3, 3 Hz).
• Ripple current capability: Rated ripple current of 11.8 A at 120 Hz and 16.52 A at 100 kHz to handle both low- and high-frequency ripple components.
• Leakage and tolerance: Capacitance tolerance ±20% and leakage current specified (after 5 minutes application at 20°C, not more than 3√V μA or 5 mA, whichever is smaller).
• Polarized device: Polarized aluminum electrolytic construction for DC energy storage and smoothing applications.
• Physical size: Large-can dimensions: length 100 mm × diameter 76.2 mm (approx.), suitable for screw-terminal mounting.

Typical Applications

• AC servomotor drives: Supports high-frequency regenerative voltage handling in motor-control systems requiring frequent charge–discharge cycles.
• General inverters: Energy storage and smoothing for inverter DC-link circuits, especially where voltage fluctuates.
• Voltage-doubler rectifier circuits: Bulk capacitance for rectifier circuits using voltage-doubler topologies.
• Industrial power supplies: High-capacitance, high-voltage smoothing and ripple handling in industrial power-conversion equipment.

Unique Advantages

• Designed for regenerative duty: Series-level specification highlights suitability for high-frequency regenerative voltage and rapid charge–discharge cycles, reducing component-level risk in those applications.
• High ripple handling across frequencies: Specified ripple current at both 120 Hz and 100 kHz supports mixed-frequency power-electronics ripple environments.
• Long endurance at elevated temperature: 5000 hours rated life at 85°C provides measurable durability for continuous industrial operation.
• Secure screw-terminal connections: Large-can screw terminals enable reliable, low-impedance connections for high-current DC-link usage.
• RoHS compliant: Meets RoHS directive requirements for environmental compliance.

Why Choose LQR2W332MSEH?

LQR2W332MSEH combines a high 450 V rating with 3.3 mF capacitance in a screw-terminal large-can package engineered for high-speed charge–discharge behavior and elevated-temperature endurance. The part is targeted at designs that require robust DC energy storage, high ripple tolerance, and reliable screw-terminal connectivity—typical of inverter, motor-drive, and industrial power-conversion systems.

This capacitor is a practical choice for engineers specifying components for equipment exposed to fluctuating voltages or high-frequency regenerative currents, offering a clear set of verifiable electrical and mechanical characteristics from the LQR series datasheet.

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