LQR2W332MSEGBN

The LQR2W332MSEGBN is a screw-terminal aluminum electrolytic capacitor in Nichicon’s LQR series, optimized for high-speed charge–discharge applications at up to 85°C. Its 3.3 mF capacitance and 450 V rated voltage make it suitable for demanding power-electronics environments where regenerative or fluctuating voltages occur.

Designed for industrial power systems, the LQR2W332MSEGBN delivers practical ripple handling and endurance characteristics for AC servomotor regenerative circuits, general inverters, rectifier/voltage-doubler topologies and other power-conditioning roles while complying with RoHS requirements.

Key Features

• Capacitance & Rated Voltage — 3.3 mF (3300 µF) nominal capacitance with a 450 V rated voltage and ±20% tolerance, suitable for DC-link and energy-buffering uses.
• High-Speed Charge–Discharge — Engineered for 85°C high-speed charge–discharge operation, supporting applications with frequent voltage swings and regenerative events.
• Ripple Current Capability — Specified ripple current of 12.4 A at 120 Hz and 17.36 A at 10 kHz, enabling effective handling of both low- and high-frequency ripple in power systems.
• Operating Temperature & Endurance — Rated for −25°C to +85°C operation with a lifetime rating of 5000 hours at 85°C under rated conditions.
• Package & Mounting — Radial can with screw terminals for secure, serviceable connections; physical dimensions L: 13.0 cm × D: 6.35 cm.
• Polarized Design — Polar capacitor construction for DC applications where polarity is maintained.
• Leakage and Low-Temperature Stability — Leakage current after 5 minutes meets the series criterion (≤ 3√V µA or 5 mA, whichever is smaller); impedance ratio Z(−25°C)/Z(+20°C) up to 8 for low-temperature stability.
• Series Qualification Details — LQR series characteristics include endurance under DC bias plus rated ripple current for 5000 hours at 85°C and charge–discharge endurance testing to 20 million cycles (ΔV = 0.3 × rated voltage, 3 Hz) at room temperature.
• RoHS Compliance — Manufactured in accordance with the RoHS Directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Drives and Servo Systems — Energy buffering and regenerative-voltage handling for AC servomotors and drive inverters where frequent charge–discharge events occur.
• General Inverters and Power Converters — DC-link and smoothing duties in inverter topologies exposed to fluctuating supply or regenerative inputs.
• Rectifier / Voltage-Doubler Circuits — Suited for rectifier circuits and voltage-doubler arrangements that require robust high-voltage capacitance.
• Power Conditioning in Fluctuating Voltage Environments — Stabilizes DC rails and absorbs transient energy in equipment operating where line or load voltages vary.

Unique Advantages

• Designed for Regenerative Loads — Specified for high-frequency regenerative voltage scenarios, making it appropriate for motor-drive and inverter systems that return energy to the DC link.
• High Ripple-Handling Performance — Explicit ripple current ratings at both 120 Hz and 10 kHz enable selection based on application frequency content and thermal budgeting.
• Proven Endurance — 5000 hours at 85°C endurance rating and a documented charge–discharge endurance test (20 million cycles at ΔV = 0.3 × Vrated) provide measurable lifetime expectations for maintenance planning.
• Secure Screw-Terminal Mounting — Screw-terminals on a radial can provide robust, serviceable electrical connections for industrial assemblies; nominal mounting hardware for this diameter follows M5 bolt convention within the LQR series dimensions.
• Stable Low-Temperature Behavior — Impedance characteristics specified down to −25°C (Z(−25°C)/Z(+20°C) ≤ 8) for predictable performance in colder operating conditions.
• Regulatory Compliance — RoHS directive compliance supports use in regions with restricted substance requirements.

Why Choose LQR2W332MSEGBN?

The LQR2W332MSEGBN combines 3.3 mF of capacitance at 450 V with a screw-terminal radial package tailored for industrial power-electronics roles that demand frequent charge–discharge cycling and reliable ripple handling. Its endurance ratings and documented series test conditions give design and maintenance teams clear data for lifecycle planning.

This capacitor is well suited to engineers specifying DC-link, regenerative, and rectifier applications in inverters, servo drives and other equipment exposed to fluctuating voltages—delivering a balance of capacitance, voltage rating, measured ripple capability and RoHS compliance from the Nichicon LQR series.

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