LNU2W392MSEHBB

The LNU2W392MSEHBB is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LNU series, designed for high-voltage industrial power electronics. It delivers 3900 µF capacitance at a 450 V rating in a compact, screw-terminal can suitable for applications that require high-voltage energy storage and rapid charge–discharge cycling.

Targeted at industrial power supplies and inverter circuitry, this part offers high ripple handling, extended high-temperature lifetime, and stability across a wide operating temperature range to support demanding regenerative and high-frequency applications.

Key Features

• Capacitance & Voltage: 3.9 mF (3900 µF) rated at 450 V DC, with rated voltage range up to DC 525 V as specified for the LNU series.
• High-temperature endurance: Load life of 5000 hours when rated ripple current is applied at 105 °C, meeting the series endurance specification.
• Wide operating temperature: Specified for –40 °C to +105 °C operation, enabling use across broad industrial environments.
• High ripple capacity: Ripple current capability of 15.4 A at 120 Hz and 21.56 A at 10 kHz to support high-frequency and high-load switching circuits.
• Robust charge–discharge behavior: Qualified for charge–discharge endurance (50 million cycles at ΔV = rated voltage ±0.3, 3 Hz) per series specifications.
• Leakage current specification: After 5 minutes at rated voltage, leakage current is ≤ 3√(C·V) µA or 5 mA, whichever is smaller (measured at 20 °C), per datasheet criteria.
• Low-temperature stability: Impedance characteristic specified with Z(–40 °C) / Z(+20 °C) = 8 for rated voltages 400–525 V, supporting cold-start and low-temperature operation.
• Mounting & package: Screw-terminal radial can with screw terminals for secure electrical and mechanical connection in power modules and assemblies.
• Compact form factor: Smaller-sized design compared with the LNT series, with physical dimensions L: 10.5 cm × D: 7.62 cm and a maximum seated height of 4.134 inches.
• RoHS compliant: Meets the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial inverters and drives: DC-link energy storage and smoothing for inverter circuitry used in motor drives and industrial power supplies.
• Regenerative motor systems: Handling high-frequency regenerative voltages for AC servomotors and systems with energy recovery requirements.
• High-frequency switching power supplies: Bulk storage and ripple absorption in high-speed charge–discharge and switching environments.
• Industrial power modules: Use where compact, high-voltage capacitors with screw-terminal connections are required for robust mounting and serviceability.

Unique Advantages

• High-voltage capability: 450 V nominal rating with the LNU series rated up to DC 525 V, enabling higher-voltage system designs without series stacking.
• Designed for heavy ripple and frequency: Specified ripple current at both 120 Hz and 10 kHz supports high-frequency switching and regenerative loads.
• Extended high-temperature life: 5000-hour load life at 105 °C ensures stability and predictable aging in hot operating environments.
• Charge–discharge durability: Endurance validated for tens of millions of charge–discharge cycles, reducing maintenance frequency in cycling applications.
• Compact, serviceable package: Screw-terminal radial can for secure installation and straightforward replacement in industrial assemblies.
• Regulatory compliance: RoHS conformity supports use in regulated industrial installations.

Why Choose LNU2W392MSEHBB?

LNU2W392MSEHBB is positioned for engineers designing industrial power systems that demand high-voltage energy storage, strong ripple performance, and long-term reliability at elevated temperatures. Its combination of 3900 µF capacitance, 450 V rating, and verified endurance characteristics make it suitable for DC-link smoothing, regenerative circuits, and high-frequency switching environments.

For teams focused on durability and predictable behavior under heavy ripple and frequent cycling, this Nichicon LNU-series capacitor delivers the thermal endurance and electrical specifications needed to support robust industrial power designs.

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