LQR2W682MSEHBN

The LQR2W682MSEHBN from Nichicon is an aluminum electrolytic, screw-terminal capacitor rated at 6800 µF and 450 V with an operating temperature range of -25°C to +85°C. It is designed for high-speed charge–discharge and applications exposed to fluctuating voltages.

Typical use cases include high-frequency regenerative voltage systems such as AC servomotors and general inverters, as well as rectifier circuits for voltage-doubler topologies. The device is RoHS compliant and specified for industrial power applications that require robust ripple handling and long-term endurance.

Key Features

• Capacitance and Voltage: 6800 µF nominal capacitance at a rated voltage of 450 V, with a capacitance tolerance of ±20% (at 120 Hz, 20°C).
• Screw Terminal Mounting: Radial can package with screw terminals for secure electrical and mechanical connections in high-current power systems.
• Temperature Range: Specified operating temperature from -25°C to +85°C to suit a wide range of industrial environments.
• Ripple Current Performance: Rated for 23.3 A at 120 Hz and 32.62 A at 10 kHz, enabling effective smoothing and energy buffering in high-ripple applications.
• Low Equivalent Series Resistance (ESR): ESR of 150 mΩ measured at 120 Hz, supporting efficient charge–discharge cycles and reduced power loss.
• Endurance and Lifetime: Endurance specified as 5000 hours at 85°C with D.C. bias plus rated ripple current; post-test limits include capacitance change within ±20% and leakage current less than or equal to initial specified value.
• Charge–Discharge Durability: Qualified for charge–discharge endurance testing of 20 million cycles (ΔV = 0.3 × rated voltage, 3 Hz) at room temperature with maintained electrical characteristics.
• Leakage Current Specification: After 5 minutes at rated voltage, leakage current is specified as not more than 3√(V) µA or 5 mA, whichever is smaller (measured at 20°C).
• Physical Size and Packaging: Radial can with screw terminals; nominal size dimensions L: 17 cm × D: 7.62 cm for board or chassis planning.
• RoHS Compliance: Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servomotor Drives: Energy buffering and high-frequency regenerative voltage handling in servo and motion-control systems.
• Inverters and Motor Drives: Bulk smoothing and ripple reduction for general inverter topologies subject to fluctuating input or regenerative currents.
• Rectifier / Voltage Doubler Circuits: Use as a DC storage/smoothing element in rectifier circuits including voltage-doubler configurations.
• Industrial Power Electronics: Power-conditioning and charge–discharge applications where long endurance and robust ripple capability are required.

Unique Advantages

• High Voltage Capability: 450 V rating supports high-energy DC bus architectures and elevated-voltage power systems.
• Strong Ripple Handling: High allowable ripple current at both low and high frequencies reduces the need for multiple parallel components and simplifies thermal management.
• Durable Endurance: 5000 hours at 85°C under rated conditions and charge–discharge qualification to 20 million cycles provide predictable long-term performance.
• Screw-Terminal Reliability: Robust screw-terminal connections offer secure mounting and reliable current carrying for industrial installations.
• Low ESR: 150 mΩ at 120 Hz minimizes I²R losses and supports efficient energy transfer during rapid charge–discharge events.
• Regulatory Compliance: RoHS conformity simplifies integration into designs with environmental compliance requirements.

Why Choose LQR2W682MSEHBN?

The LQR2W682MSEHBN is positioned for designers who need a high-capacitance, high-voltage aluminum electrolytic with proven endurance and strong ripple performance. Its screw-terminal packaging and low ESR make it suitable for industrial power electronics where secure connections and efficient charge–discharge behavior are essential.

This capacitor is well-suited to engineers building AC servo drives, general inverters, and rectifier circuits that require durable energy storage under fluctuating voltage and high ripple conditions. Backed by Nichicon specifications for endurance, leakage, and charge–discharge behavior, it provides verifiable performance for long-term system designs.

Request a quote or submit an inquiry to receive pricing and availability information for the LQR2W682MSEHBN and to discuss how it fits your specific power electronics requirements.