LQR2G682MSEHBB

The LQR2G682MSEHBB is a screw‑terminal, large‑can aluminum electrolytic capacitor from Nichicon's LQR series, rated 6800 µF at 400 V. It is designed for high‑speed charge/discharge and heavy ripple environments, providing high capacitance and robust endurance in compact radial can packaging.

Typical use cases include power conversion and motor drive systems where regenerative voltages, voltage fluctuations or high ripple currents are encountered—such as AC servomotor drives, general inverters and rectifier circuits for voltage doubler topologies.

Key Features

• Capacitance & Voltage — 6.8 mF (6800 µF) nominal capacitance at a rated voltage of 400 V with ±20% tolerance (measured at 120 Hz, 20°C).
• Screw Terminal Mounting — Radial can package with screw terminal design (nominal M5 bolt accommodation) for secure, low‑resistance connections in high current applications.
• High Ripple Current Capability — Handles 25.4 A at 120 Hz (low frequency) and 35.56 A at 10 kHz (high frequency), supporting demanding charge/discharge and regenerative loads.
• Charge/Discharge Endurance — Endurance specified for 20 million charge/discharge cycles (ΔV = rated × 0.3 at 3 Hz, room temperature) and 5000 hours at 85°C under DC bias plus rated ripple current.
• Leakage & Loss Characteristics — Specified leakage current of 4940 µA and tanδ (DF) of 0.15 measured at 20°C, 120 Hz, allowing predictable behavior in power systems.
• Operating Temperature Range — Rated for −25°C to +85°C to cover typical industrial ambient conditions.
• Mechanical Size & Packaging — Can dimensions φ76.2 × 150 mm (L) with cardboard packing; mass production status.
• Regulatory — RoHS compliant.

Typical Applications

• AC Servomotor Drives — Provides high capacitance and high ripple handling for regenerative voltage buffering and rapid charge/discharge cycles in servo inverters.
• General Inverters — Used as DC link capacitors to smooth voltage fluctuations and absorb high ripple currents in inverter stages.
• Voltage Doubler Rectifier Circuits — Suited for rectifier circuits in voltage doubler topologies where stable high‑voltage energy storage is required.
• Equipment in Voltage‑Fluctuating Areas — Offers endurance and leakage specifications appropriate for systems exposed to unstable or varying supply conditions.

Unique Advantages

• Large Capacitance at High Voltage: 6800 µF at 400 V delivers substantial energy storage for DC link and buffering applications without resorting to multiple smaller devices.
• High Ripple Current Support: Rated 25.4 A (120 Hz) and 35.56 A (10 kHz) to handle both low‑ and high‑frequency ripple, reducing stress on upstream converters.
• Designed for Fast Charge/Discharge: LQR series specification for high‑speed charge/discharge behavior, validated for 20 million cycles at specified ΔV, supporting frequent dynamic loads.
• Proven Endurance at Elevated Temperature: 5000 hours at 85°C under rated conditions ensures long operational life in demanding thermal environments.
• Secure Screw‑Terminal Connections: Radial can with screw terminals (M5 nominal) enables robust, low‑impedance connections for high current systems and simplifies assembly.
• Regulatory Compliance: RoHS compliance ensures the part meets common environmental substance restrictions for industrial equipment.

Why Choose LQR2G682MSEHBB?

The LQR2G682MSEHBB combines high capacitance, 400 V rating and screw‑terminal convenience in a rugged aluminum can designed for high ripple and fast charge/discharge duty. Its endurance (5000 hours at 85°C) and validated charge/discharge cycle performance make it a suitable choice for power conversion systems such as inverters, servo drives and rectifier circuits that demand reliable energy buffering under fluctuating voltages.

As a mass‑production Nichicon LQR series part with RoHS compliance, this capacitor is positioned for engineers and procurement teams seeking a verified, industrially rated solution for DC link and regenerative energy storage applications.

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