LNU2G392MSEHBN

The LNU2G392MSEHBN is a screw-terminal aluminum electrolytic capacitor in Nichicon’s LNU series, providing 3.9 mF (3900 µF) capacitance at a 400 V nominal rating. It is engineered for industrial power applications that demand high-voltage capability, robust ripple handling and long-term operation at elevated temperatures.

Designed for inverter and motor-drive environments, this polarized radial can offers a compact, high-voltage alternative with features targeted at high-frequency regenerative circuits and high-speed charge–discharge loading.

Key Features

• Capacitance & Voltage: 3.9 mF (3900 µF) nominal capacitance with a rated voltage of 400 V; rated voltage range for the series extends up to DC525 V.
• High-temperature operation: Specified for −40 °C to +105 °C operating temperature, with a load life of 5000 hours at 105 °C under rated ripple current.
• Ripple current capability: High ripple current ratings—14.3 A at 120 Hz and 20.02 A at 10 kHz—support heavy AC stress in power-conversion circuits.
• High-frequency & regenerative use: Built to cope with high-speed charge–discharge cycles and high-frequency regenerative voltages typical of AC servomotors and inverters.
• Robust mechanical package: Radial can with screw terminals for secure electrical and mechanical connections in industrial enclosures; polarized construction for DC power applications.
• Endurance and charge–discharge reliability: Meets endurance requirements including 50 million charge–discharge cycles (specified test condition), with post-test limits on capacitance, tan δ and leakage current.
• Leakage and insulation: Leakage current after 5 minutes is specified as not more than 3√(C·V) μA or 5 mA (whichever is smaller) at 20 °C; insulation resistance greater than 100 MΩ at DC 500 V between terminal and bracket.
• Size and mounting: Compact footprint—length 8.5 cm × diameter 7.62 cm—and a seated height up to 3.346 inches; nominal screw-bolt mounting dimensions and bracket options are provided for secure installation.
• RoHS compliance: Conforms to the RoHS directives referenced in the product data.

Typical Applications

• Industrial inverter power supplies: Energy storage and smoothing for DC bus and inverter front-ends where sustained ripple and high DC voltage are present.
• AC servomotor regenerative circuits: Handles high-frequency regenerative voltage and rapid charge–discharge cycles in servo drives and motion-control systems.
• General inverter and motor-drive systems: Bulk capacitance for motor controllers, frequency inverters and industrial variable-speed drives requiring high-voltage, high-ripple components.
• High-speed charge–discharge circuits: Suited for power subsystems exposed to fast switching and repeated discharge events in industrial equipment.

Unique Advantages

• High-voltage capability in a smaller footprint: LNU series offers higher voltage ratings and reduced size compared with prior designs, enabling denser power assemblies.
• Designed for high thermal stress: 5000-hour load life at 105 °C provides predictable performance in hot industrial environments.
• Strong ripple-handling performance: Specified ripple current at both low and high frequencies supports a wide range of switching power topologies.
• Durable screw-terminal mounting: Screw terminals provide secure electrical and mechanical connections suitable for heavy-current power panels and bus systems.
• Tested endurance for rapid cycling: Meets charge–discharge cycle requirements (50 million cycles), demonstrating resilience under frequent switching conditions.
• Measured electrical safety parameters: Insulation resistance and voltage-proof test values provide quantifiable assurances for industrial installations.

Why Choose LNU2G392MSEHBN?

The LNU2G392MSEHBN is positioned for designers who need high-voltage bulk capacitance with robust ripple handling and proven endurance at elevated temperatures. Its screw-terminal can package and series-level ratings up to DC525 V make it a practical choice for inverter, servo and general motor-drive power systems where compact size and reliable long-term performance matter.

Engineers specifying this part will benefit from clear, test-based electrical characteristics—leakage, insulation, ripple and endurance—reducing uncertainty during design validation and supporting long-term system reliability in demanding industrial environments.

Request a quote or submit an inquiry for availability, lead time and technical support to discuss how LNU2G392MSEHBN fits your power-system requirements.