LQR2W222MSEG

The LQR2W222MSEG is a Nichicon screw‑terminal aluminum electrolytic capacitor in the LQR series, offering 2200 µF capacitance at a 450 V rating. It is engineered for high ripple current and high‑speed charge–discharge applications used in industrial power electronics.

Typical use cases include inverter and regenerative circuits, equipment operating in fluctuating voltage environments, and rectifier/voltage‑doubler circuits where stable bulk energy storage and high ripple endurance are required. The part is supplied in cardboard packing and is RoHS compliant.

Key Features

• Capacitance & Voltage: 2200 µF nominal capacitance rated for 450 V DC, providing substantial bulk energy storage for high-voltage power systems.
• High Ripple Current Capability: Rated ripple current of 8.6 A at 120 Hz and 12.04 A at 100 kHz, suitable for high-ripple DC bus and charge/discharge applications.
• Screw Terminal Mounting: Robust radial can with screw terminals (M5 nominal bolt for φ63.5 diameter) for secure, low‑impedance connections in high-current installations.
• Endurance and Temperature: Endurance of 5000 hours at 85°C under rated DC bias plus ripple, with an operating temperature range of -25°C to 85°C.
• Loss and Leakage: Tangent of loss angle (tanδ) 0.15 measured at 20°C, 120 Hz, and leakage current of 2980 µA as specified for the part.
• Mechanical Size: Can dimensions φ63.5×100L (size dimension L: 10 × D: 6.35 cm), providing a compact footprint for its voltage and capacitance class.
• Capacitance Tolerance & Polarity: Capacitance tolerance -20%~20% (±20% at 120 Hz, 20°C) and polarized construction for correct DC bus application.
• Compliance: RoHS compliant as part of the LQR series specification set.

Typical Applications

• Servo and Motor Drives: Used for high-frequency regenerative voltage handling in AC servomotor and drive systems where repeated charge/discharge cycles occur.
• Power Inverters: Bulk DC link and smoothing capacitor in general inverter designs that require sustained ripple current performance.
• Rectifier / Voltage Doubler Circuits: Energy storage and smoothing for rectifier circuits and voltage doubler topologies operating at high DC voltages.
• Equipment in Fluctuating Voltage Environments: Stabilizes DC bus for equipment exposed to voltage fluctuations, leveraging its high endurance and ripple capability.

Unique Advantages

• Designed for High Ripple Environments: Explicit ripple ratings at both low and high frequencies (8.6 A at 120 Hz, 12.04 A at 100 kHz) support designs with significant AC ripple on the DC bus.
• Long Endurance at Elevated Temperature: 5000 hours rated life at 85°C under DC bias plus ripple ensures predictable aging in continuous-duty industrial applications.
• Screw-Terminal Reliability: M5 screw terminals provide secure, low-resistance connections suitable for high-current installations and serviceability.
• Measured Electrical Characteristics: Specified tanδ (0.15 at 20°C, 120 Hz) and documented leakage current (2980 µA) allow engineers to model losses and standby drain accurately.
• Compact High-Voltage Form Factor: φ63.5×100L packaging delivers high capacitance and voltage capability in a manageable footprint for power assemblies.
• RoHS Compliant: Meets RoHS requirements for use in applications where restricted substances compliance is required.

Why Choose LQR2W222MSEG?

The LQR2W222MSEG from Nichicon’s LQR series combines high-voltage (450 V) bulk capacitance with explicit high‑ripple capability and long endurance (5000 h at 85°C). Its screw‑terminal can design and specified electrical characteristics (tanδ, leakage current, ripple ratings) make it a practical choice for industrial power electronics where predictable performance and robust connections are needed.

This capacitor is well suited to engineers designing inverters, motor drives, rectifier circuits, and other systems requiring stable DC bus energy storage under fluctuating voltage and high ripple conditions. Its documented specifications support accurate system-level thermal and lifetime planning while maintaining RoHS compliance.

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