LNU2W682MSEJ

The LNU2W682MSEJ from Nichicon is a screw‑terminal aluminum electrolytic capacitor in the LNU series, rated 6800 µF at 450 V and specified for operation to 105°C. Designed for industrial power electronics, it targets inverter circuitry, high‑frequency regenerative voltage in AC servomotors, and other industrial power‑supply applications where high voltage, high ripple handling and reliable long‑life performance are required.

This polarized, radial can capacitor offers high voltage capability within a compact package and is RoHS compliant.

Key Features

• Capacitance & Voltage — 6800 µF nominal capacitance with a rated voltage of 450 V (part of a rated voltage range up to DC 525 V), suitable for high‑voltage power rails.
• High Temperature Endurance — Specified for operation from −40°C to +105°C with a load life of 5000 hours at 105°C under rated ripple current.
• High Ripple Current Handling — Rated ripple current of 22.5 A at 120 Hz and 31.5 A at 10 kHz, supporting both low‑ and high‑frequency power stages.
• Screw Terminal, Radial Can Package — Screw terminal mounting provides robust electrical and mechanical connections for industrial assemblies; package is radial can with screw terminals.
• Polarized Electrolytic Design — Conventional polarized aluminum electrolytic construction optimized for high‑voltage inverter and regenerative circuits.
• Tolerance & Leakage — Capacitance tolerance ±20%; leakage current specified as not more than 3√(C·V) µA or 5 mA after 5 minutes at 20°C (per datasheet conditions).

Typical Applications

• Industrial Inverters: Bulk energy storage and smoothing in inverter power supplies where high voltage and sustained ripple handling are required.
• AC Servomotor Drives: DC link capacitor for handling high‑frequency regenerative voltages and rapid charge/discharge cycles in servo systems.
• Power Supply Modules: Filtering and energy buffering in industrial power supplies and converter stacks operating up to 105°C.
• High‑Speed Charge/Discharge Systems: Applications requiring repeated charge/discharge endurance (datasheet lists endurance for 50 million charge‑discharge cycles under specified conditions).

Unique Advantages

• High Voltage in a Compact Form: Provides 450 V rating (series up to DC 525 V) while maintaining a smaller footprint compared with earlier LNT series parts, aiding space‑constrained designs.
• Designed for High‑Frequency Regeneration: Rated ripple currents at 10 kHz and endurance under high‑speed charge/discharge make it suitable for regenerative and fast switching environments.
• Long Life at Elevated Temperature: 5000 hours life at 105°C under rated ripple current offers predictable longevity in hot industrial environments.
• Robust Electrical Connections: Screw terminal mounting ensures secure, low‑resistance connections for heavy current paths common in power electronics.
• Wide Operating Range: −40°C to +105°C operating temperature range supports deployments across a broad set of industrial conditions.
• RoHS Compliant: Meets RoHS directive requirements (2011/65/EU, (EU)2015/863) for environmental compliance.

Why Choose LNU2W682MSEJ?

The LNU2W682MSEJ is positioned for engineers designing industrial power converters and servo drives who need a high‑voltage, high‑ripple‑current capacitor with proven endurance at elevated temperatures. Its screw‑terminal, radial can form factor and datasheeted endurance characteristics make it a practical choice for DC link, energy buffering, and regenerative circuits where reliability and repeatable performance matter.

Specifying this Nichicon LNU series part delivers a balance of voltage capability, ripple handling and thermal endurance, helping reduce system risk and simplify power stage design while remaining compliant with RoHS requirements.

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