LNU2G183MSEJBB

The LNU2G183MSEJBB is a high‑voltage, screw‑terminal aluminum electrolytic capacitor from Nichicon's LNU series. It delivers 18,000 µF (18 mF) capacitance at a 400 V rating and is designed for heavy‑duty industrial power systems where high energy storage, high ripple handling and robust thermal endurance are required.

Built for inverter circuitry, high‑frequency regenerative circuits and general industrial inverters, this polarized radial can with screw terminals balances large capacitance and high voltage capability with a compact footprint for its class.

Key Features

• High Capacitance / Voltage: 18,000 µF nominal capacitance at 400 V rated voltage; series rated up to DC 525 V for higher‑voltage designs.
• Screw‑Terminal Package: Radial can with screw terminals enables secure, low‑impedance connections for high current applications and easy installation with brackets supplied separately.
• Wide Temperature Range: Operates from −40 °C to +105 °C, supporting demanding industrial thermal environments.
• Long Life at Elevated Temperature: Rated load life of 5,000 hours with applied ripple current at 105 °C; endurance specifications ensure capacitance and leakage stability after life testing.
• High Ripple Current Capability: Handles 38 A at 120 Hz (low frequency) and 53.2 A at 100 kHz (high frequency), supporting high‑power inverter and regenerative applications.
• Endurance and Charge‑Discharge Robustness: Endurance tests include 50 million charge–discharge cycles (3 Hz) as specified in the datasheet, with limits on capacitance, tan δ and leakage preserved.
• Compliance: RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Inverters: Bulk energy storage and smoothing for inverter DC buses in motor drives and power conversion systems.
• AC Servomotor Regeneration: High‑frequency regenerative voltage support and charge/discharge cycles in servo and motion control systems.
• High‑Power Industrial Power Supplies: Filtering and transient buffering where high ripple currents and elevated ambient temperatures are common.

Unique Advantages

• High Energy Density at Voltage: 18,000 µF at 400 V gives substantial DC bus energy storage without moving to larger or multiple units.
• Robust Ripple Handling: Specified ripple current ratings at both 120 Hz and 100 kHz support both mains‑frequency smoothing and high‑frequency switching environments.
• Thermal Endurance: 5,000‑hour life at 105 °C provides predictable aging and performance in hot industrial enclosures.
• Mechanical Reliability: Screw terminals and separate bracket supply enable secure mounting and low‑impedance connections for sustained heavy use.
• Tested Charge‑Discharge Durability: Datasheet‑specified 50 million charge/discharge cycles verify suitability for frequent regenerative and cycling conditions.

Why Choose LNU2G183MSEJBB?

The LNU2G183MSEJBB combines large capacitance, high voltage capability and high ripple current handling in a screw‑terminal radial can designed for industrial power electronics. Its thermal rating to 105 °C with a 5,000‑hour load life and extensive endurance testing makes it suitable for inverter, servo and other regenerative power systems that demand stable performance under continuous stress.

This part is well suited for engineers specifying DC bus storage or regenerative buffering in medium‑to‑high voltage industrial designs who require verifiable endurance, high ripple capacity and straightforward mechanical installation.

Request a quote or contact sales to discuss volume pricing, lead times and how LNU2G183MSEJBB can be integrated into your power electronics design. Datasheet and technical documents are available from the manufacturer for detailed engineering evaluation.