LNU2G123MSEJBN

The LNU2G123MSEJBN is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LNU series, engineered for high-voltage industrial power applications. It combines a 12 mF capacitance with a 400 V DC rating and a compact radial can screw‑terminal package.

Designed for inverter circuitry and high-frequency regenerative environments, this capacitor offers high ripple-current capability and long-term stability at elevated temperatures, making it suitable for industrial power supplies and motor drive systems.

Key Features

• Capacitance & Voltage — 12 mF rated capacitance with a 400 V DC rated voltage; capacitance tolerance is ±20% (measured at 120 Hz, 20 °C).
• High-Temperature Operation — Rated for operation over −40 °C to +105 °C and specified for 5000 hours of load life at 105 °C under rated ripple current.
• High Ripple & High-Frequency Performance — Ripple current capability of 30.1 A at 120 Hz and 42.14 A at 10 kHz; described for use with high-speed charge–discharge and high-frequency regenerative voltages.
• Endurance and Charge–Discharge Reliability — Series datasheet specifies endurance under D.C. bias plus rated ripple current for 5000 hours at 105 °C, and charge–discharge endurance testing for 50 million cycles (3 Hz).
• Robust Mounting — Screw terminal, radial can package with separate bracket supply for secure mechanical and electrical connections in industrial assemblies.
• Compact High-Voltage Form Factor — LNU series is specified as higher-voltage and smaller-sized than the LNT series; this part's physical size is L: 16.5 × D: 9 cm, enabling space-efficient high-voltage designs.
• Environmental Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Inverter Power Supplies — Used as bulk and smoothing capacitance in inverter front-ends and DC-link stages for reliable energy storage under high DC voltage conditions.
• AC Servomotor Regeneration — Suited for high-frequency regenerative voltage circuits in servomotor drives where frequent charge–discharge cycles and high ripple currents are present.
• General Inverter Systems — Applicable to general inverter topologies that require high-voltage capacitors with long life at elevated operating temperatures.

Unique Advantages

• High-voltage capability — 400 V DC rating (series up to 525 V) enables use in higher-voltage industrial power stages without multiple-parallel arrangements.
• Compact high-voltage design — Specified as smaller than comparable LNT series parts, helping reduce PCB and enclosure footprint for high-voltage components.
• High ripple and HF handling — Rated ripple current of 30.1 A (120 Hz) and 42.14 A (10 kHz) supports demanding AC and switching environments.
• Long-term high-temperature reliability — 5000 hours load life at 105 °C under rated ripple current provides predictable aging and maintenance planning for industrial systems.
• Screw-terminal robustness — Screw terminal mounting simplifies assembly and provides secure electrical connections for high-current applications.
• Proven charge–discharge endurance — Series testing for 50 million charge–discharge cycles (3 Hz) demonstrates suitability for repetitive regenerative or pulsed-power use cases.

Why Choose LNU2G123MSEJBN?

The LNU2G123MSEJBN delivers a balance of high-voltage capability, compact packaging, and robust ripple-current performance tailored for industrial power electronics. Its specification set—12 mF at 400 V, wide operating temperature range to 105 °C, long load life, and high-frequency ripple handling—makes it well suited to inverter, motor drive regeneration, and other high-stress power applications.

Manufactured by Nichicon as part of the LNU series, this capacitor is intended for engineers and buyers looking for a reliable, high-voltage electrolytic solution that supports long operating life and demanding charge–discharge conditions while minimizing space in the power stage.

Request a quote or contact sales for pricing and availability of LNU2G123MSEJBN and to discuss sample availability or volume requirements.