LNU2G682MSEH

The LNU2G682MSEH is a screw-terminal aluminum electrolytic capacitor designed for industrial power applications. It combines a high capacitance (6.8 mF) and 400 V rated voltage with a rugged screw-terminal radial can package for reliable power handling in inverter and regenerative systems.

Engineered for demanding environments, this Nichicon LNU-series capacitor supports operation to 105°C, a rated-voltage range up to DC 525 V across the series, and a 5000-hour load life under rated ripple at 105°C—making it suitable for inverter circuitry, industrial power supplies, and high-frequency regenerative voltage applications such as AC servomotors.

Key Features

• Capacitance & Voltage: 6.8 mF (6800 µF) nominal capacitance with a 400 V rated voltage; capacitance tolerance ±20% (120Hz, 20°C).
• High-Temperature Endurance: Rated for continuous operation from −40°C to +105°C with a load life of 5000 hours at 105°C when subjected to rated ripple current.
• High Ripple Current Capability: Handles 19.5 A at 120 Hz and 27.3 A at 10 kHz, supporting both low- and high-frequency ripple conditions.
• Screw-Terminal Radial Can Package: Robust screw-terminal mounting for secure mechanical and electrical connection; radial, can-style construction for industrial assemblies.
• Charge–Discharge Endurance: Meets series-level endurance requirements after 50 million charge–discharge cycles under specified test conditions.
• Leakage & Safety Characteristics: Leakage current after 5 minutes is limited to 3√CV (µA) or 5 mA, whichever is smaller (at 20°C); insulation resistance >100 MΩ at DC 500 V between terminal and bracket; AC 2500 V, 1 minute dielectric withstand between terminal and bracket.
• Size & Mechanical: Body dimensions L: 12.5 × D: 7.62 cm with a maximum seated height of 4.921 in; nominal screw-bolt interface (M5 per series drawing).
• Environmental Compliance: Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Inverters: Bulk energy storage and smoothing for inverter circuitry in industrial power supplies, leveraging high voltage rating and ripple handling.
• AC Servomotor Regenerative Systems: Supports high-frequency regenerative voltages and frequent charge–discharge cycles in servomotor drives.
• High-Frequency Converters: Suited for converters and power modules that require elevated ripple current capability at kHz frequencies.
• High-Speed Charge/Discharge Circuits: Designed to cope with loading from rapid charge–discharge events found in power electronic applications.

Unique Advantages

• High Voltage Capability: 400 V nominal rating (series up to DC 525 V) enables use in higher-voltage industrial power systems without additional series stacking.
• Elevated Temperature Lifespan: 5000-hour rated load life at 105°C provides predictable performance for prolonged high-temperature operation.
• Strong Ripple Performance: High allowable ripple current at both 120 Hz and 10 kHz reduces heating and extends service life in demanding power applications.
• Robust Mechanical Termination: Screw-terminal construction delivers reliable electrical connection and simplified installation in power assemblies.
• Proven Endurance: Qualifies under series endurance tests including 50 million charge–discharge cycles, supporting designs requiring frequent cycling.
• Regulatory Compliance: RoHS compliance supports environmentally conscious manufacturing and procurement requirements.

Why Choose LNU2G682MSEH?

The LNU2G682MSEH delivers a combination of high capacitance, elevated voltage rating, and robust thermal and ripple performance tailored for industrial power electronics. Its screw-terminal radial can package and series-proven endurance characteristics make it a practical choice for inverter circuitry, regenerative servo systems, and other applications that demand reliable energy buffering under frequent cycling and high-temperature stress.

Provided by Nichicon, this part is suited to engineers and procurement teams building industrial power supplies and motor-control systems who need a stable, long-life electrolytic capacitor with clear, verifiable specifications for ripple, leakage, insulation, and endurance.

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