LQR2W182MSEG

The LQR2W182MSEG from Nichicon is a screw‑terminal aluminum electrolytic capacitor rated at 1.8 mF (1800 µF) and 450 V. It is designed for high‑speed charge–discharge operation and targeted at power conversion systems that experience regenerative or fluctuating voltages.

Typical use cases include AC servomotor regenerative circuits, general inverters, rectifier circuits such as voltage doublers, and equipment operating in voltage‑fluctuating environments. Key strengths include high ripple handling, robust endurance at elevated temperature, and a screw‑terminal package for secure connections.

Key Features

• High Voltage Energy Storage — Rated at 450 V to support high‑voltage DC bus and rectifier applications.
• Large Capacitance — 1.8 mF (1800 µF) nominal capacitance with ±20% tolerance (measured at 120 Hz, 20°C) for bulk energy buffering and smoothing.
• High-Speed Charge–Discharge — Engineered for 85°C high‑speed charge–discharge behavior suitable for regenerative voltage and inverter duty cycles.
• High Ripple Current Capability — Rated ripple current of 7.9 A at 120 Hz and 11.06 A at 10 kHz to handle both low‑ and high‑frequency ripple components.
• Defined ESR — Equivalent series resistance of 150 mΩ at 120 Hz, specified to support predictable thermal and ripple performance.
• Robust Endurance — Endurance specification of 5000 hours at 85°C under rated conditions; charge–discharge endurance proven to 20 million cycles (ΔV = rated × 0.3, 3 Hz) at room temperature.
• Screw Terminal Package — Radial can with screw terminals for secure high‑current connections and straightforward integration into power assemblies.
• Wide Operating Range — Specified for operation from −25°C to +85°C for use in a variety of industrial environments.
• RoHS Compliant — Conforms to the RoHS Directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Drives (AC servomotors) — Buffers and absorbs regenerative energy in motor drive DC buses, supporting high‑speed charge–discharge cycles.
• Power Inverters — Energy storage and ripple suppression in general inverter systems subject to fluctuating DC link voltages.
• Rectifier / Voltage Doubler Circuits — Provides bulk capacitance and smoothing in rectifier topologies including voltage doublers.
• Equipment in Fluctuating‑Voltage Environments — Stabilizes DC rails and protects downstream electronics where supply voltage varies.

Unique Advantages

• High‑Voltage Capability: 450 V rating enables use on elevated DC buses and in rectifier stages without series stacking.
• Designed for Regenerative Loads: High‑speed charge–discharge endurance and proven cycle lifetime make it suitable for regenerative motor and inverter applications.
• Predictable Thermal/Ripple Performance: Specified ESR (150 mΩ at 120 Hz) and ripple ratings at both 120 Hz and 10 kHz allow more accurate thermal and lifetime planning.
• Secure, Serviceable Connections: Screw‑terminal radial can package simplifies installation and replacement in industrial assemblies.
• Long Operational Life at Elevated Temperature: 5000 hours endurance at 85°C under rated conditions supports reliable operation in demanding environments.
• Regulatory Compliance: RoHS conformity supports deployment in regulated markets.

Why Choose LQR2W182MSEG?

LQR2W182MSEG is positioned for power‑conversion designs that require durable, high‑voltage bulk capacitance with reliable high‑speed charge–discharge performance. Its combination of 1.8 mF capacitance, 450 V rating, defined ESR, and validated ripple and endurance characteristics make it a practical choice for industrial drives, inverters, and rectifier applications where regenerative events and voltage fluctuation are expected.

This Nichicon screw‑terminal capacitor is suited to engineers and procurement teams seeking a component with measurable ripple handling, long endurance at 85°C, and a package designed for secure electrical connections and maintenance access.

Request a quote or contact our sales team for availability, pricing, and to discuss how LQR2W182MSEG can fit into your power design requirements.