LQR2W822MSEJ

The LQR2W822MSEJ is an aluminum electrolytic capacitor in a screw-terminal radial can designed for high-voltage power applications. It provides 8,200 µF capacitance at a 450 V rating and is optimized for high-speed charge–discharge environments.

Typical use cases include regenerative-voltage circuits for AC servomotors, general inverters, rectifier/voltage-doubler circuits and equipment operating in areas with fluctuating supply voltage. The part is RoHS compliant and rated for operation from -25 °C to +85 °C.

Key Features

• High Voltage & High Capacitance — 8,200 µF nominal capacitance at a 450 V rated voltage for bulk energy storage in power conversion systems.
• Designed for Fast Charge–Discharge — Engineered for high-speed charge–discharge behavior and high-frequency regenerative voltage conditions.
• Temperature Range & Endurance — Operating temperature range of -25 °C to +85 °C with an endurance rating of 5,000 hours at 85 °C under DC bias plus rated ripple current.
• Low-Frequency and High-Frequency Ripple Handling — Rated ripple current of 26.1 A at 120 Hz and 36.54 A at 10 kHz, with an equivalent series resistance of 150 mΩ at 120 Hz.
• Screw Terminal Mounting — Radial can with screw terminals for secure, high-current connections and robust mechanical mounting.
• Capacitance Tolerance & Stability — ±20% tolerance at 120 Hz, 20 °C, with specified stability and impedance characteristics down to -25 °C (Z(-25 °C)/Z(+20 °C) ≤ 8).
• Leakage Current Specification — Leakage current after 5 minutes at rated voltage is limited to not more than 3√V (µA) or 5 mA, whichever is smaller.
• RoHS Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Drives & Inverters — Energy buffering and DC-link smoothing in general inverters and AC servo motor drives where regenerative currents and voltage fluctuations occur.
• Regenerative Power Circuits — Handling high-frequency regenerative voltage in systems with frequent charge–discharge cycles.
• Rectifier & Voltage-Doubler Circuits — Bulk storage and smoothing in rectifier stages and voltage-doubler configurations.
• Power Conditioning for Fluctuating Supplies — Stabilizing DC bus voltage in equipment exposed to variable or unstable supply conditions.

Unique Advantages

• High energy density for DC bus applications: 8,200 µF at 450 V provides substantial energy storage for inverter and regenerative circuits.
• Tolerant of frequent charge–discharge cycles: Endurance and charge–discharge test criteria maintain capacitor characteristics after repeated cycling (20 million cycles at rated ΔV × 0.3).
• Robust ripple handling: Measured ripple currents of 26.1 A (120 Hz) and 36.54 A (10 kHz) combined with 150 mΩ ESR support high-current ripple environments.
• Long-term elevated-temperature performance: Rated 5,000 hours at 85 °C under specified conditions, supporting reliable operation in hotter enclosures.
• Secure mechanical and electrical connection: Screw-terminal radial can package simplifies high-current wiring and mounting in industrial assemblies.
• Specification-driven leakage control: Leakage current limited by explicit formula (≤ 3√V µA or 5 mA) to support predictable system behavior after voltage application.

Why Choose LQR2W822MSEJ?

The LQR2W822MSEJ positions itself as a practical solution for power-electronics designs requiring high-voltage bulk capacitance, robust ripple handling and reliable operation at elevated temperatures. Its screw-terminal construction and measurable electrical characteristics make it suitable for engineers specifying DC-link and regenerative energy-storage components in industrial inverter and motor-control systems.

This capacitor is a fit for designers who need verifiable endurance (5,000 hours at 85 °C), defined leakage and impedance behavior across temperature, and secure mechanical terminations for high-current connections.

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