LNU2W392MSEGBB

The LNU2W392MSEGBB is a high-voltage aluminum electrolytic capacitor in a screw-terminal radial can designed for industrial power electronics. As part of Nichicon's LNU series, it targets inverter circuitry and regenerative power applications where high voltage, high ripple handling and sustained elevated-temperature performance are required.

With a 3.9 mF (3900 µF) capacitance at 450 V, operation from −40 °C to 105 °C and a rated-life endurance of 5000 hours at 105 °C under rated ripple, this capacitor is specified for demanding charge–discharge and high-frequency regenerative voltage environments.

Key Features

• Capacitance & Voltage — 3.9 mF (3900 µF) nominal capacitance with a 450 V rated voltage; series rated up to DC 525 V per product family specifications.
• High Ripple Capability — Ripple current ratings of 16.3 A at 120 Hz and 22.82 A at 10 kHz support heavy AC ripple and high-frequency operation.
• Temperature Range — Specified for operation from −40 °C to 105 °C, enabling use across wide industrial temperature environments.
• Endurance & Reliability — Load life specified as 5000 hours at 105 °C with DC bias plus rated ripple current; capacitance change within ±20% and leakage and tan δ within endurance limits after test.
• Charge–Discharge Robustness — Designed to cope with high-speed charge–discharge loads; endurance of charge–discharge behavior verified for 50 million cycles under defined test conditions.
• Leakage and Insulation — Leakage current after 5 minutes at 20 °C limited to not more than 3√CV (µA) or 5 mA (whichever is smaller); insulation resistance >100 MΩ at DC 500 V between terminal and bracket.
• Voltage Proof — No abnormality under AC 2500 V for 1 minute between terminal and bracket, per specification.
• Package & Mounting — Radial can with screw terminals for secure mechanical and electrical connection in industrial assemblies; polarized construction.
• Size — Compact high-voltage form factor with dimensions L: 13.5 cm × D: 6.35 cm.
• RoHS Compliance — Conforms to RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Inverter Power Supplies — Bulk energy storage and smoothing for industrial inverter front ends, supporting stable DC bus performance under high-voltage conditions.
• AC Servomotor Regeneration — Handles high-frequency regenerative voltages and repeated charge–discharge events encountered in motor drive regenerative braking.
• General Industrial Inverters — Designed for the high ripple and elevated-temperature demands of general-purpose inverter and drive systems.
• High-Speed Charge–Discharge Systems — Suitable where rapid energy transfer and robust cycling are needed, thanks to validated charge–discharge endurance.

Unique Advantages

• High Voltage Capability: 450 V nominal rating with LNU family ratings up to DC 525 V provides headroom for demanding DC bus designs.
• Compact High-Voltage Form Factor: LNU series is specified as high-voltage and smaller sized than previous LNT designs, enabling tighter packaging in power assemblies.
• High Ripple and Frequency Performance: Specified ripple currents at 120 Hz and 10 kHz support both low-frequency smoothing and high-frequency regenerative applications.
• Long Elevated-Temperature Life: 5000 hours load life at 105 °C under rated ripple current supports reliable long-term operation in hot industrial environments.
• Charge–Discharge Durability: Endurance validated for extensive charge–discharge cycles, making it suited for applications with frequent energy cycling.
• Measured Electrical Safeguards: Defined leakage current limits, insulation resistance, and voltage proof tests provide measurable acceptance criteria for system integration.

Why Choose LNU2W392MSEGBB?

LNU2W392MSEGBB delivers a balance of high-voltage rating, strong ripple-current capability and proven endurance at elevated temperatures, tailored for industrial inverter and regenerative power applications. Its screw-terminal radial can design and compact footprint make it practical for engineers specifying bulk energy storage where space and robust connections matter.

This Nichicon LNU-series part is suited for designers who need a verifiable, specification-driven capacitor for sustained high-temperature operation, frequent charge–discharge cycling and high-frequency regenerative environments, providing measurable reliability and lifecycle performance documented in the product specifications.

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