LQR2W392MSEJBB

The LQR2W392MSEJBB is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series, rated 3900 µF at 450 V. It is a polarized, radial can package designed for power-electronics applications that demand high ripple-current handling and robust long-term performance.

Designed for high-speed charge–discharge and voltage-fluctuating environments, this capacitor targets industrial inverter and regenerative-drive circuits, voltage-doubler rectifiers, and other general-purpose power applications where high ripple capability and endurance are required.

Key Features

• Capacitance & Tolerance — 3900 µF nominal with a tolerance of ±20% (measured at 120 Hz, 20°C).
• High Voltage Rating — Rated for 450 V DC for use in high-voltage power circuits.
• Screw Terminal Radial Can — Robust screw-terminal mounting for secure, low-impedance connections in radial can package form.
• High Ripple Current Capability — Low-frequency ripple current: 13.6 A at 120 Hz; high-frequency ripple current: 19.04 A at 100 kHz, supporting demanding power-conversion loads.
• Operational Temperature Range — Specified for −25°C to +85°C operation.
• Long Endurance — Endurance rating of 5000 hours at 85°C under DC bias plus rated ripple current, meeting specified limits for capacitance change, tan δ, and leakage current.
• Leakage Current Specification — After 5 minutes at rated voltage and 20°C, leakage current is limited to not more than 3√(√V) µA or 5 mA, whichever is smaller.
• Low-Temperature Impedance Stability — Impedance ratio Z(−25°C)/Z(+20°C) ≤ 8, maintaining performance in colder environments.
• RoHS Compliant — Meets RoHS directive requirements.

Typical Applications

• AC Servomotor Regenerative Circuits — Handles high-frequency regenerative voltages and rapid charge–discharge cycles in servo drive power stages.
• Inverters and Motor Drives — Supports general inverter designs with high ripple-current demands and fluctuating DC-link voltages.
• Voltage-Doubler Rectifier Circuits — Suitable for rectifier stages including voltage-doubler topologies that require stable high-voltage capacitance.
• Industrial Power Electronics — Useful in equipment operating in voltage-fluctuating areas where endurance and secure screw-terminal connections are important.

Unique Advantages

• High ripple tolerance: Explicit low- and high-frequency ripple ratings (13.6 A at 120 Hz and 19.04 A at 100 kHz) reduce thermal stress under heavy AC components on the DC link.
• 450 V capability: High voltage rating enables use in elevated DC-link and rectifier applications without additional series stacking.
• Long life at elevated temperature: 5000 hours endurance at 85°C under rated conditions provides durability in continuously powered systems.
• Secure screw-terminal mounting: Robust mechanical and electrical connection suited to industrial assemblies and serviceable installations.
• Documented leakage and impedance behavior: Clear leakage current limits and impedance stability down to −25°C support predictable design margins.
• Regulatory compliance: RoHS compliance supports environmental and regulatory requirements for many commercial and industrial products.

Why Choose LQR2W392MSEJBB?

The LQR2W392MSEJBB is positioned for designers needing a high-voltage, high-ripple, long-life electrolytic solution in screw-terminal form. Its combination of 3900 µF capacitance, 450 V rating, and explicit ripple-current specifications makes it well suited for DC-link, regenerative, and rectifier applications in industrial power electronics.

Engineers specifying this component will benefit from predictable endurance characteristics (5000 hours at 85°C), documented leakage and impedance behavior, and a robust mechanical mounting style that simplifies installation and maintenance in fielded equipment.

For pricing, availability, or to request a quote for LQR2W392MSEJBB, please contact sales or submit a quote request through the supplier channels.