LNU2W332MSEHBN

The LNU2W332MSEHBN from Nichicon is a screw‑terminal aluminum electrolytic capacitor designed for high‑voltage industrial power applications. It provides 3.3 mF (3300 µF) capacitance at a nominal 450 V rating and is part of the LNU series optimized for smaller high‑voltage packages.

Engineered for inverter circuitry and high‑frequency regenerative circuits (such as AC servomotor and general inverter systems), this capacitor supports high‑speed charge/discharge loads and prolonged operation at elevated temperatures.

Key Features

• Nominal Capacitance: 3.3 mF (3300 µF) with ±20% tolerance (120 Hz, 20 °C), suitable for bulk energy storage in power electronics.
• High Rated Voltage: Nominal 450 V rating; series rated voltage range up to DC 525 V for high‑voltage designs.
• High Temperature Endurance: Rated for operation from −40 °C to +105 °C with a load life of 5000 hours at 105 °C under applied ripple current.
• Ripple Current Capability: 14.4 A at 120 Hz and 20.16 A at 10 kHz, supporting both low‑ and high‑frequency ripple handling.
• Screw Terminal Mounting: Radial can with screw terminals (suitable for M5 stud/bolt arrangements as specified in the series drawing) for secure, low‑impedance connections in power assemblies.
• Compact High‑Voltage Package: Marketed as a smaller sized high‑voltage option within the LNU series, with physical dimensions L: 9.5 cm × D: 7.62 cm for PCB or bracketed mounting layouts.
• Charge‑Discharge Endurance: Designed to withstand high‑speed charge/discharge loading; specified endurance includes performance after 50 million charge/discharge cycles (ΔV = rated voltage − 0.3, cycle 3 Hz).
• RoHS Compliant: Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies: Energy storage and smoothing for inverter circuitry and high‑voltage DC bus applications in industrial power systems.
• Motor Drives and Regeneration: High‑frequency regenerative voltage handling for AC servomotor drives and regenerative inverter stages.
• General Inverters: Bulk capacitance and ripple suppression in general inverter systems where high voltage and high ripple capability are required.
• High‑speed Charge/Discharge Systems: Applications that impose frequent or rapid charge/discharge cycles where long cycle endurance is needed.

Unique Advantages

• High‑Voltage Capability: 450 V nominal rating with series support up to DC 525 V enables use in higher DC bus and inverter topologies.
• Designed for Elevated Temperatures: Rated to 105 °C with a 5000‑hour load life at that temperature, supporting demanding industrial environments.
• Strong Ripple Performance: Clear ripple current specifications at 120 Hz and 10 kHz allow designers to size capacitors against expected AC stress and thermal loading.
• Robust Mechanical Connections: Screw‑terminal construction (compatible with M5 hardware per series drawing) provides low‑impedance, reliable attachment for heavy‑current applications.
• Compact Form for High Voltage: Smaller high‑voltage package within the LNU family helps reduce board or rack space in power electronics assemblies.
• Proven Charge/Discharge Endurance: Specified to retain key electrical characteristics after extensive charge/discharge cycling, supporting long service life in cyclical applications.

Why Choose LNU2W332MSEHBN?

The LNU2W332MSEHBN combines high nominal capacitance and voltage capability with a compact, screw‑terminal aluminum can package tailored for industrial inverter and regenerative applications. Its specified ripple current ratings, high‑temperature endurance, and charge/discharge cycle robustness make it suitable for designs that demand reliable energy buffering and frequent dynamic loading.

Manufactured by Nichicon as part of the LNU series, this capacitor is targeted at engineers building inverter power stages, motor drive systems, and other high‑voltage power electronics where long life, secure connections, and predictable performance under thermal and ripple stress are required.

Request a quote or contact sales to discuss pricing, availability and how the LNU2W332MSEHBN fits your power electronics design requirements.