LNU2W392MSEH

The LNU2W392MSEH is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LNU series, rated at 3.9 mF (3900 µF) and 450 V DC. Designed for high-voltage industrial power electronics, it targets inverter circuitry, AC servomotor regenerative systems and other general-purpose high-voltage DC applications.

As part of the LNU family, this capacitor delivers high-voltage capability in a compact can-style package with robust thermal and ripple-handling performance for demanding industrial environments. It is RoHS compliant and optimized for applications requiring sustained operation at elevated temperature and high ripple loading.

Key Features

• Electrical Capacity & Voltage — 3.9 mF (3900 µF) capacitance with a 450 V DC rated voltage and ±20% tolerance (120 Hz, 20°C).
• High Ripple Current Handling — Rated ripple current of 15.4 A at 120 Hz and 21.56 A at 10 kHz, enabling effective smoothing under heavy AC ripple conditions.
• Thermal Range & Life — Operating temperature range of −40°C to +105°C with a rated load life of 5000 hours at 105°C under ripple current loading.
• Mechanical & Mounting — Radial can with screw terminals for secure, low-impedance connections; nominal dimensions: diameter 76.2 mm × length 105 mm (D: 7.62 cm × L: 10.5 cm).
• Polarized Design — Polar electrolytic construction for DC bus and smoothing applications.
• Endurance & Charge–Discharge Robustness — Meets endurance limits after 5000 hours at 105°C; series-level charge–discharge testing to 50 million cycles (3 Hz) while meeting capacitance, tan δ and leakage specifications.
• Insulation & Voltage Withstand — Insulation resistance specified at greater than 100 MΩ at DC 500 V between terminal and bracket; voltage proof of AC 2500 V for 1 minute with no abnormality.
• Compliance — RoHS compliant per the provided product information.

Typical Applications

• Industrial power supplies / inverter circuitry — Bulk DC smoothing and energy storage for inverters in industrial power systems.
• AC servomotor drives and regenerative systems — Handles high-frequency regenerative voltages and supports energy return on the DC bus.
• High-speed charge–discharge systems — Suited to circuits subject to rapid charge/discharge cycles, supported by the series’ proven endurance testing.
• General-purpose high-voltage DC filtering — Reliable DC bus filtering and decoupling in industrial and power-electronics assemblies.

Unique Advantages

• High-voltage capability in a compact can — Delivers 450 V rating with the LNU series’ smaller footprint compared to prior designs, useful where board or chassis space is constrained.
• Designed for sustained elevated-temperature operation — 5000 hours rated life at 105°C under ripple current ensures predictable aging and long-term service in hot environments.
• Strong ripple-current performance — High specified ripple currents at both 120 Hz and 10 kHz support demanding power-conversion workloads.
• Secure screw-terminal connections — Screw terminals provide robust, low-resistance mounting for high-current DC bus connections and ease of assembly or service.
• Proven endurance under cycling — Series-level validation to 50 million charge/discharge cycles (3 Hz) supports applications with frequent dynamic switching.
• Measurable insulation and voltage proofing — Clear insulation resistance and AC voltage proof characteristics for predictable safety margins between terminal and bracket.

Why Choose LNU2W392MSEH?

LNU2W392MSEH combines high capacitance and 450 V rating with robust thermal and ripple capabilities tailored for industrial power electronics. Its screw-terminal can package and proven endurance profile make it a practical choice for designers who need reliable DC bus energy storage and filtering in inverter, motor-drive and regenerative applications.

As part of Nichicon’s LNU series, this capacitor offers documented performance parameters—operating range, ripple ratings, insulation and endurance—that support predictable integration into mid- to high-power designs where long-term stability and high-frequency handling are required.

For pricing, lead time, or to request a formal quote for LNU2W392MSEH, please submit a quote request or contact our sales team for assistance.