LQR2W332MSEGBB

The LQR2W332MSEGBB from Nichicon is a screw-terminal aluminum electrolytic capacitor with a nominal capacitance of 3300 µF and a rated voltage of 450 V. It is designed for high-speed charge–discharge applications and for handling high-frequency regenerative voltages commonly found in AC servomotor drives and general inverter systems.

Engineered for equipment exposed to fluctuating voltages and for use in rectifier circuits such as voltage doublers, the capacitor offers a practical combination of high ripple-current capability, extended endurance, and RoHS compliance for industrial power and drive applications.

Key Features

• Capacitance & Tolerance — 3.3 mF (3300 µF) with a tolerance of ±20% (measured at 120 Hz, 20°C), providing bulk energy storage for power electronics.
• High Voltage Rating — Rated at 450 V to support high-voltage inverter, regenerative and rectifier circuits.
• Screw-Terminal, Radial Can Package — Robust screw terminal mounting for secure electrical and mechanical connections in heavy-current installations.
• High-Speed Charge–Discharge — Designed for high speed charge–discharge behavior with endurance testing to 20 million cycles (ΔV = rated voltage × 0.3, 3 Hz) per series data.
• Ripple Current Performance — Specified ripple current of 12.4 A at 120 Hz and 17.36 A at 100 kHz, enabling effective filtering and energy buffering at both low and high frequency operation.
• Operating Temperature & Endurance — Rated for −25°C to +85°C with an endurance specification of 5000 hours at 85°C under D.C. bias plus rated ripple current.
• Leakage Current — Leakage current specification: after 5 minutes’ application of rated voltage, not more than 3√V (µA) or 5 mA, whichever is smaller (at 20°C), per series specification.
• RoHS Compliant — Meets RoHS Directive (2011/65/EU, (EU)2015/863) requirements.

Typical Applications

• AC Servomotor Drives — Handles high-frequency regenerative voltages and rapid charge–discharge cycles encountered in servo feedback and braking systems.
• General Inverters — Provides bulk energy storage and ripple filtering in inverter DC-link circuits operating up to 450 V.
• Voltage Doubler Rectifiers — Suited for rectifier circuits requiring high-voltage capacitance and stable charge retention.
• Equipment in Fluctuating Voltage Environments — Robust temperature and endurance specifications support use where supply voltage can vary significantly.

Unique Advantages

• High Voltage Capability: 450 V rating supports demanding DC-link and regenerative circuit designs without requiring series capacitor strings.
• High-Frequency Ripple Handling: Measured ripple current ratings at 120 Hz and 100 kHz allow designers to size the capacitor for both low- and high-frequency filtering needs.
• Charge–Discharge Endurance: Series endurance testing includes 20 million charge–discharge cycles, demonstrating suitability for frequent switching and regenerative events.
• Wide Operating Temperature Range: −25°C to +85°C operation and 5000 hours endurance at 85°C provide predictable performance in industrial environments.
• Secure Termination: Screw-terminal radial can package delivers reliable mechanical fastening and electrical connection for high-current applications.
• Regulatory Compliance: RoHS compliance simplifies environmental requirements for system-level procurement and deployment.

Why Choose LQR2W332MSEGBB?

The LQR2W332MSEGBB is positioned for industrial power designs that require robust bulk capacitance at high voltage, with specific design attention to high-speed charge–discharge and high-frequency ripple environments. Its combination of 3300 µF at 450 V, screw-terminal construction, and series-validated endurance makes it suitable for inverter DC-links, regenerative drives, and rectifier circuits where stability under fluctuating voltages is important.

For engineers and procurement teams building or maintaining industrial drives and power conversion equipment, the LQR2W332MSEGBB offers a clear specification set for thermal endurance, ripple handling, and leakage behavior, backed by Nichicon series documentation and RoHS compliance for regulatory alignment.

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