LQR2G472MSEH

The LQR2G472MSEH is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series. Designed for high-speed charge–discharge and high-frequency regenerative environments, it provides a 4.7 mF capacitance at a 400 V rating and is supplied in a radial can with screw terminals for robust electrical and mechanical connections.

Targeted at power electronics such as inverters and AC servomotor drives, this capacitor addresses applications with fluctuating voltages and high ripple demands by combining low ESR, high ripple-current capability, and endurance at elevated temperature.

Key Features

• Core Electrical — 4.7 mF capacitance with a rated voltage of 400 V and capacitance tolerance ±20% (measured at 120 Hz, 20°C).
• Low ESR & Ripple Handling — Equivalent series resistance of 3.4 mΩ at 120 Hz; ripple current ratings of 18.3 A at 120 Hz and 25.62 A at 10 kHz support high-frequency and high-current applications.
• High-speed Charge–Discharge Endurance — Series-level endurance includes capability for 20 million charge–discharge cycles (ΔV = rated voltage × 0.3, 3 Hz) at room temperature and 5000 hours endurance under DC bias plus rated ripple current at 85°C.
• Temperature Range — Rated for operation from −25°C to +85°C, suitable for equipment operating in variable ambient conditions.
• Mounting & Package — Screw terminal radial can package for secure, serviceable connections and straightforward panel or bracket mounting; nominal size L: 11 × D: 7.62 cm.
• Leakage Current Specification — After 5 minutes at rated voltage, leakage current is limited to not more than 3√(V) μA or 5 mA, whichever is smaller (measured at 20°C), per series specification.
• Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servomotor Drives — Supports high-frequency regenerative voltages and rapid charge–discharge cycles typical in motor control systems.
• Industrial Inverters — Handles voltage fluctuation and high ripple currents in general inverter topologies.
• Rectifier / Voltage Doubler Circuits — Suited for rectifier stages where regenerative or fluctuating DC occurs, including voltage doubler rectifiers.

Unique Advantages

• High ripple-current capability: Low ESR (3.4 mΩ at 120 Hz) combined with specified ripple currents at 120 Hz and 10 kHz enables reliable handling of high-frequency and high-current stress.
• Durability under thermal stress: 5000 hours rated endurance at 85°C with DC bias plus rated ripple current delivers predictable life in hot operating environments.
• Screw-terminal construction: Provides secure, low-resistance connections for high-current power systems and simplifies serviceability during maintenance.
• Designed for regenerative systems: Series-proven suitability for high-speed charge–discharge and regenerative voltages makes it a fit for motor drives and inverter designs.
• Clear specification set: Measured leakage, impedance, and endurance data enable accurate thermal and lifetime budgeting in power designs.
• RoHS compliance: Conforms to applicable RoHS directives for environmentally restricted substance requirements.

Why Choose LQR2G472MSEH?

The LQR2G472MSEH combines a high voltage rating (400 V) with substantial capacitance (4.7 mF), low ESR, and high ripple-current capability to meet the demands of regenerative and inverter-based power systems. Its screw-terminal radial can design and specified endurance make it suitable for engineers designing equipment that must tolerate frequent voltage swings and sustained ripple under elevated temperature.

This part is ideal for power-electronics designers and equipment manufacturers seeking a proven electrolytic solution with clear, application-focused specifications for performance, lifetime, and environmental compliance.

Request a quote or contact sales for pricing, lead times, and availability of LQR2G472MSEH for your next power-electronics design.