LQR2W122MSEFBB

The LQR2W122MSEFBB is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series, specified at 1,200 µF and 450 V. It is designed for high-speed charge–discharge applications and power-conversion environments that require robust ripple handling and long endurance.

Typical use cases include regenerative circuits for AC servomotors, general inverters, equipment operating in fluctuating-voltage environments, and rectifier/voltage-doubler circuits. Key value propositions are its high ripple-current capability, long life at elevated temperature, and secure screw-terminal mounting for reliable power connections.

Key Features

• Capacitance & Voltage — Rated at 1,200 µF and 450 V for bulk energy storage and DC-link filtering in medium- to high-voltage power systems.
• Screw Terminal Mounting — Radial can with screw terminals providing secure electrical and mechanical connections suited to high-current power assemblies; nominal bolt diameter M5 for φ51 size.
• High Ripple Current Capability — Low-frequency ripple current 5.2 A (120 Hz) and high-frequency ripple current 7.28 A (10 kHz) to support demanding AC and inverter workloads.
• Leakage Current — Specified leakage current of 2,200 µA after rated voltage application, enabling predictable standby and hold-up characteristics.
• Endurance at Elevated Temperature — Rated life of 5,000 hours at 85°C under DC bias plus rated ripple current; capacitance and dissipation factor remain within specified limits after endurance testing.
• Charge–Discharge Endurance — Demonstrated endurance after 20 million charge–discharge cycles (ΔV = rated × 0.3, 3 Hz) at room temperature, maintaining capacitance, tan δ, and leakage within specified limits.
• Operating Temperature Range — Specified for −25°C to +85°C to accommodate a wide range of industrial environments.
• Form Factor & Packaging — Size φ51 × 80L (L: 8 × D: 5.1 cm) in a radial can with screw terminals; supplied in cardboard packing. Capacitance tolerance ±20%.
• RoHS Compliant — Compliant to the RoHS directive as stated in the product series documentation.

Typical Applications

• AC Servomotor Regeneration — Use in regenerative circuits to absorb and smooth high-frequency energy from motor braking and rapid torque changes.
• Inverters and Motor Drives — DC-link and buffering in general inverter systems where high ripple currents and frequent charge–discharge are present.
• Voltage-Doubler and Rectifier Circuits — Bulk filtering and energy storage in rectifier and voltage-doubling topologies subject to fluctuating input voltages.
• Industrial Power Equipment — General-purpose smoothing and energy storage in equipment operating across −25°C to +85°C with sustained high-current demands.

Unique Advantages

• Designed for High-Speed Charge–Discharge: LQR series construction supports rapid charge–discharge behavior, backed by 20 million-cycle endurance verification.
• Robust Ripple Performance: High-frequency ripple rating of 7.28 A (10 kHz) and low-frequency rating of 5.2 A (120 Hz) reduce heating and extend system life under dynamic loads.
• Long Elevated-Temperature Life: 5,000 hours at 85°C under DC bias plus rated ripple current helps ensure predictable long-term performance in hot environments.
• Secure Screw-Terminal Connectivity: Screw terminals (φ51 nominal M5 bolt) provide reliable electrical contact for high-current applications and simplify installation and maintenance.
• Predictable Leakage Characteristics: Specified leakage current of 2,200 µA supports accurate system-level power budgeting and hold-up calculations.
• Regulatory Compliance: RoHS compliance for use in regions and products requiring restricted-substance conformance.

Why Choose LQR2W122MSEFBB?

The LQR2W122MSEFBB is positioned for engineers and procurement teams who need a rugged, screw-terminal aluminum electrolytic capacitor for power conversion and regenerative applications. Its combination of 1,200 µF capacitance at 450 V, high ripple-current ratings at both low and high frequencies, and demonstrated endurance under charge–discharge and elevated-temperature conditions make it suitable for demanding industrial designs.

Manufactured by Nichicon and available in mass production, this part is a practical choice when long-term reliability, repeatable electrical behavior, and secure mechanical connections are required in medium-voltage power systems.

Request a quote or contact sales to discuss pricing, lead time, and availability for LQR2W122MSEFBB. Our team can provide order details and support for your design and procurement needs.