LQR2W392MSEH

The LQR2W392MSEH is a screw-terminal aluminum electrolytic capacitor designed for high-voltage DC energy storage and rapid charge–discharge applications. It delivers 3.9 mF capacitance at a 450 V rating in a radial can with screw terminals, optimized for industrial power-electronics environments.

Engineered for high-speed charge–discharge and high-frequency regenerative voltages, this capacitor is suited for AC servomotor regeneration, general inverters, voltage-doubler rectifier circuits and equipment operating in areas with fluctuating supply voltages. It is RoHS compliant.

Key Features

• Capacitance and Voltage — 3.9 mF (3,900 µF) rated at 450 V, with a capacitance tolerance of ±20% (at 120 Hz, 20°C).
• Screw Terminal Mounting — Radial can with screw terminals for robust, serviceable electrical connections in power assemblies.
• High-Speed Charge–Discharge — Series design targeted for high-speed charge–discharge behavior; datasheet endurance includes a 20 million cycle charge–discharge test (ΔV = rated × 0.3, 3 Hz) at room temperature.
• Ripple Current Capability — Rated ripple current 14.1 A at 120 Hz and 19.74 A at 10 kHz to support DC-link and regenerative applications with significant AC ripple components.
• Thermal and Endurance Specs — Operating temperature range −25°C to +85°C and endurance of 5,000 hours at 85°C under DC bias plus rated ripple current with defined limits for capacitance change, tan δ and leakage current.
• Leakage Current — Leakage current specified per datasheet: after 5 minutes at rated voltage, not more than 3√V (µA) or 5 mA, whichever is smaller (measured at 20°C).
• Low-Temperature Impedance Stability — Impedance ratio Z(−25°C)/Z(+20°C) specified as 8 (series characteristic).
• Marking — Printed with white letters on a dark-brown sleeve for clear polarity and part identification.

Typical Applications

• AC Servomotor Regeneration — Provides high-voltage energy buffering and rapid discharge capability for regenerative braking circuits and energy return systems.
• General Inverters / DC-Link — Acts as DC-link storage in inverter topologies where sustained high-voltage capacitance and ripple handling are required.
• Voltage-Doubler Rectifier Circuits — Suited for rectifier circuits including voltage-doubler configurations that demand high-voltage capacitance.
• Equipment in Fluctuating Voltage Areas — Robust tolerance to voltage fluctuations and defined endurance under DC bias make it suitable for industrial installations with variable supply conditions.

Unique Advantages

• High-voltage energy storage: 3.9 mF at 450 V provides substantial energy density for DC-link and regenerative systems, reducing the need for parallel capacitor assemblies.
• Designed for rapid cycling: Proven charge–discharge endurance (20 million cycles at ΔV = rated × 0.3) supports applications with frequent energy transfer events.
• Strong ripple performance: Specified ripple currents at both low (120 Hz) and high (10 kHz) frequencies allow designers to account for a wide range of switching and regeneration conditions.
• Industrial operating range: −25°C to +85°C operation and 5,000-hour endurance at 85°C under rated conditions provide predictable long-term behavior in demanding environments.
• Secure, maintainable connections: Screw-terminal radial can package simplifies installation, replacement and maintenance in industrial assemblies.
• Standards-compliant material selection: RoHS compliance aligns the component with common environmental requirements.

Why Choose LQR2W392MSEH?

The LQR2W392MSEH combines high-voltage capacitance, engineered charge–discharge endurance and robust ripple-current capability in a serviceable screw-terminal package. These characteristics make it a practical choice for power-electronics designers working on inverters, servo drives and rectifier circuits where energy storage, rapid cycling and voltage fluctuation tolerance are priorities.

With defined thermal and endurance specifications and clear leakage and impedance limits provided in the datasheet, this capacitor supports predictable performance over long service intervals in industrial applications backed by Nichicon series-level engineering criteria.

Request a quote or contact sales to discuss pricing, availability and how the LQR2W392MSEH can fit your power-electronics design requirements.