LQR2W122MSEFBN

The LQR2W122MSEFBN is a screw-terminal aluminum electrolytic capacitor designed for high-speed charge–discharge applications. It provides 1.2 mF (1200 µF) capacitance at a 450 V rated voltage in a robust radial can package with screw terminals, optimized for power electronics environments.

Engineered for regenerative and inverter circuits, the LQR series targets equipment exposed to fluctuating voltage and high-frequency regenerative conditions such as AC servomotor drives and general inverters, while maintaining RoHS compliance.

Key Features

• High Voltage & Capacitance: 1200 µF at 450 V rated voltage, offering bulk energy storage for high-voltage power circuits.
• Screw Terminal Package: Radial can with screw terminals for secure, low-resistance power connections and ease of installation.
• High-Speed Charge–Discharge Capability: Designed for high-speed charge–discharge behavior; endurance verified to 20 million cycles (ΔV = rated × 0.3, 3 Hz) at room temperature.
• Ripple Current Performance: Supports 5.2 A ripple current at 120 Hz and 7.28 A at 10 kHz, suitable for high-frequency inverter and regenerative applications.
• Low ESR: Equivalent series resistance of 150 mΩ at 120 Hz to minimize internal losses and heating under ripple load.
• Operating Temperature & Endurance: Rated for −25 °C to +85 °C with endurance specified as 5000 hours at 85 °C under DC bias plus rated ripple current.
• Polarized Design & Tolerance: Polarized capacitor with capacitance tolerance of −20% to +20% (±20% at 120 Hz, 20 °C).
• Regulatory Compliance: Compliant with the RoHS Directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servomotor Drives: Bulk energy buffering and handling of high-frequency regenerative voltage in servo power stages.
• General Inverters: Energy storage and smoothing in inverter DC link circuits subjected to fluctuating voltages.
• Regenerative Power Circuits: Suited for high-speed charge–discharge and repeated regenerative events found in motor control and drive systems.
• Voltage Doubler Rectifier Circuits: Use in rectifier stages where high-voltage DC storage and charge stability are required.

Unique Advantages

• High Energy Density at High Voltage: 1200 µF at 450 V provides substantial stored energy for DC link and regenerative needs without parallel arrays.
• Reliable High-Frequency Performance: Specified ripple current at both 120 Hz and 10 kHz supports a range of switching and regenerative frequencies.
• Durability Under Stress: Endurance rated to 5000 hours at 85 °C and 20 million charge–discharge cycles ensures long-term stability in demanding power applications.
• Serviceable Terminal Style: Screw terminals provide robust mechanical and electrical connection for heavy-current installations and easy replacement/maintenance.
• Measured Loss Characteristics: Low ESR (150 mΩ at 120 Hz) and defined leakage current limits support predictable thermal and electrical behavior under load.

Why Choose LQR2W122MSEFBN?

The LQR2W122MSEFBN positions itself as a purpose-built solution for power electronics systems requiring high-voltage bulk capacitance with demonstrated charge–discharge endurance and high-frequency ripple capability. Its screw-terminal radial can package and defined electrical characteristics make it suitable for design-in where secure connections and predictable performance under fluctuating voltage conditions are essential.

Choose this part for industrial inverter, servo drive, and regenerative power designs that demand a balance of stored energy, ripple handling, and long-term endurance with RoHS compliance.

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