LNU2G123MSEJ

The LNU2G123MSEJ is a screw‑terminal aluminum electrolytic capacitor designed for high‑voltage industrial power electronics. It provides 12,000 µF capacitance at a 400 V rating (part of a rated voltage range up to DC525 V) in a radial can with screw terminals.

Engineered for inverter and motor‑control environments, this capacitor is optimized for high ripple and high‑frequency regenerative voltages, with a 105°C operating rating and a specified load life of 5,000 hours at 105°C under rated ripple conditions. It is RoHS compliant.

Key Features

• Capacitance & Voltage — 12,000 µF nominal capacitance with a rated voltage of 400 V; rated voltage range specified up to DC525 V.
• High‑Temperature Endurance — Rated for continuous operation from −40°C to +105°C with a specified load life of 5,000 hours at 105°C under rated ripple current.
• Ripple Current Capability — High ripple handling: 30.1 A at 120 Hz and 42.14 A at 10 kHz, enabling robust smoothing and energy buffering in high‑power circuits.
• High‑Frequency & Charge‑Discharge Performance — Designed to cope with high‑speed charge‑discharge and high‑frequency regenerative voltages typical of AC servomotor and inverter applications; endurance verified for 50 million charge‑discharge cycles (ΔV = rated ±0.3, 3 Hz).
• Mechanical & Mounting — Radial can package with screw terminals for secure, low‑impedance connections; physical dimensions L: 16.5 × D: 9 cm and a seated height of 6.496 inch are provided for mechanical planning.
• Reliability & Safety — Leakage current after 5 minutes at rated voltage is limited to 3√(C·V) µA or 5 mA, whichever is smaller; insulation resistance greater than 100 MΩ at DC 500 V and voltage proof of AC 2500 V for 1 minute between terminal and bracket.
• Compact High‑Voltage Design — High‑voltage capability in a smaller footprint than the LNT series, enabling space‑constrained power designs.
• Regulatory Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies — Energy storage and filtering for inverter front‑ends and DC bus stabilization in industrial power supplies.
• Inverter and Motor Drive Systems — Handles high‑frequency regenerative voltages and supports rapid charge‑discharge cycles in AC servomotor and general inverter applications.
• Regenerative Braking and Energy Recovery — Buffers and absorbs high‑frequency regenerated energy from motor control systems.

Unique Advantages

• High Voltage Range: Rated to 400 V with variants up to DC525 V, enabling use across a wide set of medium‑voltage power designs.
• High Ripple Handling: Specified ripple current up to 42.14 A at 10 kHz reduces the need for parallel capacitance in high‑power circuits.
• Long High‑Temperature Life: 5,000 hours endurance at 105°C under rated ripple current provides predictable lifetime performance in hot operating environments.
• Charge‑Discharge Durability: Verified performance after 50 million charge‑discharge cycles supports applications with frequent energy pulsing.
• Smaller Footprint Compared to LNT: Delivers high‑voltage capability in a more compact package, helping optimize chassis space in dense power assemblies.
• Measured Safety Margins: Defined leakage current limits, insulation resistance, and voltage proof values give clear engineering constraints for system design.

Why Choose LNU2G123MSEJ?

The LNU2G123MSEJ targets engineers designing medium‑voltage power electronics who need a robust, high‑ripple aluminum electrolytic solution with verified high‑temperature endurance. Its combination of 12,000 µF capacitance, 400 V rating (up to DC525 V range), and explicit ripple and endurance specifications make it well suited for inverter, motor drive, and regenerative energy applications where predictable lifetime and high‑frequency performance are required.

With defined electrical and mechanical parameters—including leakage current limits, insulation resistance, voltage proof, and compact screw‑terminal mounting—this capacitor enables straightforward integration and reliable operation in industrial power designs while maintaining RoHS compliance.

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