LQR2G392MSEGBB

The LQR2G392MSEGBB is a screw-terminal aluminum electrolytic capacitor designed for power electronics requiring high-voltage energy storage and robust ripple handling. It delivers 3900 µF capacitance at 400 V in a radial can with screw terminals, optimized for high-speed charge–discharge performance up to an ambient of 85°C.

Targeted at inverter and motor-drive systems, this part is suited for high-frequency regenerative voltages, equipment operating in fluctuating-voltage environments, and rectifier/voltage-doubler circuits where reliable bulk capacitance and strong ripple capability are required. The part is RoHS compliant.

Key Features

• Capacitance & Rated Voltage — 3900 µF nominal capacitance rated for 400 V DC, with ±20% tolerance at 120 Hz, 20°C.
• Screw Terminal Package — Radial can with screw terminals for secure electrical and mechanical connections in power assemblies.
• Operating Temperature Range — Specified for −25°C to +85°C operation to support typical power-electronics environments.
• High Ripple Current Capability — Rated ripple current of 16 A at 120 Hz and 22.4 A at 10 kHz for demanding AC and switching conditions.
• Low ESR — Equivalent series resistance of 150 mΩ at 120 Hz to reduce internal heating and improve dynamic performance.
• Endurance & Lifetime — Designed for 5000 hours at 85°C under rated conditions; endurance validated after 20 million charge–discharge cycles (ΔV = rated × 0.3, 3 Hz) per datasheet series tests.
• Leakage Current Specification — After 5 minutes at rated voltage, leakage current meets the datasheet limit of not more than 3√(V) μA or 5 mA, whichever is smaller (at 20°C).
• Polarized, General-Purpose Power Capacitor — Polarized construction for DC bulk energy applications in power conversion systems.
• Physical Size — Package dimensions approximately L: 13 cm × D: 6.35 cm to aid mechanical planning in power racks and enclosures.

Typical Applications

• AC Servomotor Drives — Handles high-frequency regenerative voltages and rapid charge–discharge events common in drive regenerative topologies.
• General Inverters — Provides bulk DC-link capacitance and ripple handling for inverter DC buses in industrial and commercial drives.
• Voltage Doubler / Rectifier Circuits — Suitable for rectifier stages and voltage-doubler topologies that require stable bulk capacitance at high DC voltages.
• Equipment in Fluctuating-Voltage Areas — Robust endurance and rated ripple capability make it appropriate for installations subject to supply variation.

Unique Advantages

• High-voltage energy storage: 400 V rating combined with 3900 µF capacitance provides substantial bulk energy for DC-link and regenerative applications.
• Designed for high ripple and switching: Specified ripple currents at 120 Hz and 10 kHz and low ESR (150 mΩ) reduce heating and help maintain performance under heavy AC stress.
• Endurance against repeated cycling: Datasheet series endurance testing includes 20 million charge–discharge cycles, supporting applications with frequent energy reversals.
• Thermal and operational robustness: Rated for −25°C to +85°C with a 5000-hour endurance at 85°C, enabling reliable operation in typical industrial thermal environments.
• Secure mechanical and electrical connection: Screw terminal radial can simplifies installation and provides a robust termination for high-current bus connections.
• RoHS compliant: Meets regulatory requirements for lead-free assemblies and restricted substances per the provided compliance statements.

Why Choose LQR2G392MSEGBB?

The LQR2G392MSEGBB balances high-voltage capacitance, strong ripple performance, and proven endurance for demanding power-electronics environments. Its screw-terminal package and low ESR make it practical for DC-link, regenerative, and rectifier applications where reliable bulk energy storage and frequent charge–discharge events occur.

Manufactured by Nichicon and specified with clear endurance, leakage, and ripple parameters, this capacitor is suited to designers and system integrators building inverters, motor drives, and power supplies who need verifiable performance and predictable lifecycle behavior.

Request a quote or contact sales to discuss integrating LQR2G392MSEGBB into your design and to obtain pricing, availability, and additional technical assistance.