LNU2H682MSEJBB

The LNU2H682MSEJBB is a high-voltage aluminum electrolytic capacitor from Nichicon's LNU series, featuring a screw-terminal radial can package and a rated capacitance of 6800µF (6.8 mF) at 500 V DC. Designed for industrial power electronics, it targets inverter circuitry and high-frequency regenerative applications such as AC servomotor drives and general inverters, where high ripple handling and long-term thermal endurance are required.

Its compact, high-voltage construction and 105°C temperature rating deliver sustained performance under heavy ripple and high-speed charge–discharge loading, with a specified load life of 5000 hours at 105°C.

Key Features

• High Voltage Capability — Part rated at 500 V DC; LNU series rated voltage range extends up to DC 525 V for high-voltage system designs.
• Large Capacitance — 6800 µF (6.8 mF) nominal capacitance with ±20% tolerance (120 Hz, 20°C), suitable for bulk energy storage in power stages.
• Screw Terminal Mounting — Radial can with screw terminals provides secure mechanical and electrical connections for heavy-current power systems.
• High Ripple Current Handling — Rated ripple current of 18.5 A at 120 Hz and 25.9 A at 10 kHz to support both low- and high-frequency ripple conditions.
• High-Temperature Endurance — Operating range from −40°C to +105°C and a load-life specification of 5000 hours at 105°C under rated ripple conditions.
• Compact Mechanical Profile — Smaller-sized design relative to the LNT series, with physical dimensions L: 16.5 cm × D: 9 cm and a seated height up to 6.496 inches for space-conscious layouts.
• Reliability and Safety Characteristics — Leakage current specified as not more than 3√CV (µA) or 5 mA (whichever is smaller) after 5 minutes at 20°C; insulation resistance greater than 100 MΩ at DC 500 V between terminal and bracket; voltage proof of AC 2500 V for 1 minute between terminal and bracket.
• Charge–Discharge Endurance — Designed to meet specified characteristics after endurance testing, including long-term charge–discharge cycling and shelf-life conditions per the series specifications.

Typical Applications

• Inverter and Drive Power Stages — Bulk energy storage and smoothing for inverter DC buses in motor drives and servo amplifiers, benefiting from high ripple current capability and 500 V rating.
• Regenerative Power Circuits — Handles high-frequency regenerative voltages in AC servomotor systems and general inverter applications where fast charge–discharge cycles occur.
• Industrial Power Supplies — Energy buffering and decoupling in industrial DC power supplies that require sustained operation at elevated temperatures and heavy ripple loading.

Unique Advantages

• High-Voltage, High-Capacity Combination: 500 V rating with 6800 µF capacitance provides substantial energy storage for high-voltage power electronics.
• Robust Ripple Performance: Specified ripple currents at both low and high frequencies reduce thermal stress and support reliable operation under varied load spectra.
• Long Thermal Life: 5000-hour load-life at 105°C ensures predictable performance and longevity in high-temperature industrial environments.
• Secure Screw-Terminal Interface: Heavy-duty screw terminals enable solid electrical and mechanical connections for high-current applications.
• Compact Form Factor for High Voltage: Smaller-sized LNU design option helps save PCB and chassis space compared with larger series while maintaining high-voltage capability.

Why Choose LNU2H682MSEJBB?

The LNU2H682MSEJBB positions itself as a high-voltage, high-capacitance electrolytic solution for industrial power electronics that require durable ripple handling and thermal endurance. Its combination of 6800 µF at 500 V, screw-terminal mounting, and 105°C load-life rating makes it well suited for inverter DC buses, regenerative circuits, and heavy-duty power supplies.

Engineers specifying this Nichicon LNU-series part gain a component designed for long-term stability and reliable insulation/voltage proof characteristics, offering practical value in robust, high-frequency and high-temperature power designs.

Request a quote or contact sales to discuss availability, lead times, and application-specific requirements for LNU2H682MSEJBB.