LNU2G183MSEJBN

The LNU2G183MSEJBN is an aluminum electrolytic capacitor in Nichicon's LNU series featuring a screw-terminal radial can package. It provides 18 mF capacitance at a 400 V DC rating with polarized construction and is optimized for industrial power electronics.

Designed for inverter circuitry and high-frequency regenerative applications such as AC servomotor and general inverter systems, this capacitor delivers high-voltage capability, elevated temperature endurance, and high ripple-current handling for demanding charge–discharge and regenerative loads.

Key Features

• Capacitance and Voltage — 18 mF nominal capacitance with ±20% tolerance and a rated voltage of 400 V DC.
• Screw-Terminal Radial Can — Screw terminal mounting (radial can with screw terminals) for secure electrical and mechanical connections in industrial assemblies.
• High-Temperature Endurance — Rated to operate from −40°C to +105°C with a specified load life of 5000 hours at 105°C when rated ripple current is applied.
• High Ripple-Current Capability — Supports 38 A ripple current at 120 Hz and 53.2 A at 10 kHz, enabling handling of high-frequency and high-current ripple environments.
• Charge–Discharge Durability — Qualified for endurance under repeated charge–discharge cycles (datasheet specifies endurance after application of 50 million charge–discharge cycles at specified test conditions).
• Electrical Safety and Insulation — Insulation resistance more than 100 MΩ at DC 500 V between terminal and bracket; voltage proof test at AC 2500 V for 1 minute shows no abnormality.
• Low-Temperature Stability — Impedance stability at low temperature with Z(−40°C)/Z(+20°C) ≤ 8 for rated voltages 400–525 V.
• RoHS Compliant — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies — Energy storage and smoothing in inverter power supplies for industrial control systems.
• Inverter Circuitry — DC-link and buffering duties in general inverter designs where high voltage and high ripple handling are required.
• Regenerative Drives — High-frequency regenerative voltage applications for AC servomotors and related motor-drive systems.
• High-Speed Charge–Discharge Circuits — Circuits that require robust handling of rapid charge and discharge events in industrial electronics.

Unique Advantages

• High-voltage capability in a compact LNU package — 400 V rating with a smaller-sized LNU form factor designed for space-efficient integration compared with earlier LNT designs.
• Designed for harsh thermal environments — Continuous operation to 105°C with a 5000-hour life under rated ripple conditions improves long-term reliability in high-temperature enclosures.
• High-frequency ripple performance — Measured ripple current performance at both 120 Hz and 10 kHz provides predictable behavior in both low- and high-frequency power stages.
• Robust insulation and dielectric testing — High insulation resistance and AC voltage-proof testing ensure reliable isolation between the terminal and bracket for safety-conscious designs.
• Proven endurance for cycling — Specified endurance after repeated charge–discharge cycles supports use in regenerative and dynamic-load applications.
• Regulatory compliance — RoHS compliance simplifies materials selection for regulated markets.

Why Choose LNU2G183MSEJBN?

The LNU2G183MSEJBN balances high capacitance and high-voltage capability in a screw-terminal aluminum electrolytic package tailored for industrial inverter and regenerative drive systems. Its combination of 400 V rating, high ripple-current handling, and 105°C endurance life makes it suitable for power electronics designers who need a reliable DC-link or energy-storage capacitor in confined spaces.

Engineers designing industrial power supplies, motor drives, or high-frequency regenerative circuits will find the LNU2G183MSEJBN delivers predictable electrical performance, robust insulation characteristics, and manufacturer-documented endurance parameters for long-term deployment.

If you would like pricing or availability information for LNU2G183MSEJBN, request a quote or submit an inquiry to receive a formal response and technical support for your application needs.