LQR2W472MSEJ

The LQR2W472MSEJ is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series designed for high-speed charge–discharge power applications. It provides 4700 µF (4.7 mF) capacitance at a 450 V rating in a radial can with screw terminals, targeting industrial power electronics where high ripple and regenerative voltages occur.

Typical use cases include AC servomotor regenerative circuits, general inverters, rectifier circuits such as voltage doublers, and equipment operating in areas with fluctuating voltage. The device combines high ripple-current capability, long endurance at elevated temperature, and RoHS compliance.

Key Features

• Capacitance & Voltage — 4700 µF (4.7 mF) rated at 450 V with ±20% tolerance (measured at 120 Hz, 20°C).
• Screw-Terminal Radial Can — Robust screw-terminal mounting for secure electrical and mechanical connections in heavy-current systems.
• High-Speed Charge–Discharge Design — Engineered for high-frequency regenerative voltages and rapid charge/discharge cycles suitable for inverter and motor-drive environments.
• Ripple Current Performance — Specified ripple current of 15.8 A at 120 Hz and 22.12 A at 10 kHz to support demanding AC and high-frequency loads.
• Operating Temperature & Lifetime — Rated for −25°C to +85°C with an endurance of 5000 hours at 85°C under specified DC bias plus rated ripple current.
• Durability under Cycling — Meets charge–discharge endurance after 20 million cycles (ΔV = 0.3 × rated voltage, 3 Hz) with capacitance, tan δ and leakage current within specified limits.
• Leakage Current Limit — After 5 minutes at rated voltage, leakage is specified as not more than 3√V μA or 5 mA, whichever is smaller (at 20°C).
• RoHS Compliant — Conforms to RoHS Directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servo Drives — Supports high-frequency regenerative bus voltages and rapid charge/discharge demands in servo motor controllers.
• General Inverters — Provides bulk energy storage and high ripple handling for inverter DC-link and regenerative circuits.
• Voltage-Doubler Rectifier Circuits — Suited for rectifier topologies where voltage fluctuation and high charge/discharge stress occur.
• Industrial Power Equipment — Designed for equipment operating in voltage-fluctuating environments that require robust capacitive energy storage and long life at elevated temperatures.

Unique Advantages

• High ripple-current capability: Specified ripple currents of 15.8 A (120 Hz) and 22.12 A (10 kHz) enable reliable performance in both low- and high-frequency power circuits.
• Designed for rapid charge–discharge: Series design and charge–discharge endurance make it suitable for regenerative and dynamic power applications.
• Long-term thermal endurance: 5000 hours at 85°C under rated conditions ensures stability for prolonged operation in elevated-temperature industrial environments.
• Robust mechanical connection: Screw-terminal radial can package provides secure mounting and easy integration into power assemblies.
• Measured leakage specification: Clear leakage current limit after application of rated voltage improves predictability during system qualification.
• Standards compliance: RoHS conformity supports regulatory requirements for lead-free designs.

Why Choose LQR2W472MSEJ?

The LQR2W472MSEJ combines a high 450 V rating, substantial 4700 µF capacitance, and engineered high-speed charge–discharge behavior to address demanding power-electronics needs such as inverter DC-links and regenerative motor drives. Its specified ripple-current performance and endurance at 85°C make it a viable option for designs that require durable energy storage under fluctuating voltages and repeated charge cycles.

For engineers and procurement teams building industrial drives, inverters, and other high-power systems, this Nichicon LQR-series screw-terminal capacitor delivers verified electrical and thermal characteristics to help ensure predictable behavior and service life in fielded equipment.

If you would like pricing, availability, or a formal quote for LQR2W472MSEJ, please request a quote or contact sales to discuss your project requirements and lead times.