LQR2W182MSEF

The LQR2W182MSEF is a screw‑terminal aluminum electrolytic capacitor designed for high‑voltage, high‑frequency power applications. It delivers 1.8 mF capacitance at a 450 V rating in a radial can with robust screw terminals for secure electrical and mechanical connections.

Purpose-built for high speed charge‑discharge environments, this part is suited to regenerative voltage handling for AC servomotors, general inverters, rectifier circuits such as voltage doublers, and equipment operating in voltage‑fluctuating areas. It is RoHS‑compliant and intended for general‑purpose industrial power designs.

Key Features

• High Voltage Rating: 450 V rated voltage supports high‑voltage inverter and regenerative circuits where elevated DC bus voltages are present.
• Nominal Capacitance & Tolerance: 1.8 mF (1800 µF) with ±20% tolerance at 120 Hz, 20°C, providing energy storage for pulse and smoothing duties.
• Screw Terminal Package: Radial can with screw terminals offers secure, serviceable connections for power assemblies and easy mounting in power racks.
• High Speed Charge‑Discharge Capability: Designed for high speed charge‑discharge operation and specified for endurance under repeated charge‑discharge cycles.
• Operating Temperature & Lifetime: Rated for −25°C to +85°C with an endurance of 5000 hours at 85°C under DC bias plus rated ripple current.
• High Ripple Current Capability: Specified ripple current of 7.4 A at 120 Hz and 10.36 A at 10 kHz, supporting both low‑ and high‑frequency ripple conditions.
• Charge‑Discharge Endurance: Series specification includes endurance under 20 million charge‑discharge cycles (ΔV = rated × 0.3, 3 Hz) with limits on capacitance change, tan δ and leakage current.
• Leakage Current Specification: After 5 minutes at rated voltage, leakage current is limited to 3√(V) μA or 5 mA, whichever is smaller (measured at 20°C) per series specification.
• Polarized Device: Polarized construction for use in DC filter, smoothing and energy‑storage circuits that require correct polarity.
• RoHS Compliant: Conforms to the RoHS Directive (2011/65/EU, (EU)2015/863) for environmental regulatory requirements.
• Compact Footprint: Physical size L: 11 cm × D: 5.1 cm with a seated height specification provided for system mechanical planning.

Typical Applications

• AC Servo Drives: Handles high‑frequency regenerative voltages and rapid charge/discharge events in servo motor power stages.
• General Inverters: Provides DC bus smoothing and energy buffering for inverter front ends and PWM power stages.
• Voltage Doubler / Rectifier Circuits: Suited for rectifier and voltage‑doubler arrangements where reliable high‑voltage DC storage is required.
• Equipment in Voltage‑Fluctuating Areas: Energy storage and smoothing for industrial equipment exposed to variable supply conditions.

Unique Advantages

• High DC Voltage Capability: 450 V rating enables deployment directly on high‑voltage DC buses without series stacking.
• Designed for High‑Frequency Stress: Specified ripple current at 10 kHz and series charge/discharge endurance make it suitable for high‑frequency regenerative loads.
• Durability at Elevated Temperature: 5000 hours endurance at 85°C under rated conditions supports long service life in warm industrial environments.
• Secure Screw‑Terminal Interface: Screw terminals provide reliable low‑impedance connections and ease of installation or replacement in power assemblies.
• Predictable Electrical Limits: Clear leakage‑current and tan δ limits after voltage application and endurance testing aid deterministic design and maintenance planning.
• Regulatory Compliance: RoHS conformity simplifies environmental compliance for equipment manufacturers.

Why Choose LQR2W182MSEF?

The LQR2W182MSEF combines a high 450 V rating, substantial 1.8 mF capacitance and screw‑terminal robustness to address demanding power electronics use cases such as servo drives, inverters and rectifier circuits. Its specifications for ripple current, charge‑discharge endurance and thermal endurance at 85°C make it suitable for designs that require reliable energy buffering under high‑frequency and fluctuating voltage conditions.

Backed by Nichicon series specifications and RoHS compliance, the LQR2W182MSEF is aimed at engineers and procurement teams building industrial power systems who need quantifiable electrical and endurance characteristics for long‑term operation and predictable maintenance intervals.

For pricing, availability or to request a quotation for the LQR2W182MSEF, please contact sales to discuss your application requirements and lead times.