LNU2W332MSEH

The LNU2W332MSEH is a screw-terminal aluminum electrolytic capacitor designed for high-voltage industrial power applications. It delivers 3.3 mF (3300 µF) capacitance at a 450 V rating with an operating temperature range of −40 °C to +105 °C.

Built for inverter circuitry, regenerative voltage handling and other high-frequency charge–discharge environments, this Nichicon LNU-series part combines high-voltage capability, compact packaging and long-term endurance suited to industrial power supplies and drive systems. The series supports rated voltages up to DC 525 V and is RoHS compliant.

Key Features

• Capacitance & Voltage: 3.3 mF (3300 µF) nominal capacitance at a 450 V DC rating; series rated voltage range extends up to DC 525 V.
• High temperature endurance: Rated for continuous operation to 105 °C with a specified load life of 5000 hours when subjected to rated ripple current at 105 °C.
• Screw terminal package: Radial can with screw terminals (M5 nominal bolt diameter) for secure connections in heavy-current industrial assemblies.
• High ripple current capability: Rated ripple current of 14.4 A at 120 Hz and 20.16 A at 10 kHz to support high-frequency and high-current applications.
• Charge–discharge durability: Proven endurance under repeated charge–discharge testing (50 million cycles, 3 Hz) while meeting the datasheet’s characteristic limits.
• Robust safety and insulation: Insulation resistance greater than 100 MΩ at DC 500 V between terminal and bracket and voltage proof of AC 2500 V for 1 minute.
• Compact high-voltage design: Smaller high-voltage footprint compared with LNT series designs while maintaining high-voltage performance (physical size L: 9.5 cm × D: 7.62 cm).
• RoHS compliant: Meets RoHS directive requirements (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial inverter power supplies: Energy storage and smoothing in inverter front-ends and DC bus circuits where high voltage and ripple handling are required.
• AC servomotor drives: Regenerative voltage buffering and high-frequency energy handling for servo drive regenerative circuits.
• Regenerative and high-frequency circuits: Applications that require rapid charge–discharge cycles and stable performance at elevated temperatures.

Unique Advantages

• High-voltage capability in a compact can: Offers 450 V nominal rating with series support up to 525 V while maintaining a reduced footprint compared to related series.
• Designed for high ripple and frequency: High ripple-current ratings at both low and high frequencies reduce heating and extend operational stability in demanding power circuits.
• Long-term reliability at elevated temperature: 5000-hour load life at 105 °C under rated ripple current provides predictable lifetime behavior for industrial deployments.
• Durable screw-terminal connections: M5 screw terminals enable secure, low-resistance connections suited to heavy-current and serviceable installations.
• Charge–discharge endurance: Proven to withstand extensive charge–discharge cycling while maintaining capacitance, dissipation factor and leakage specifications.
• Compliance and safety margins: Meets insulation resistance and voltage-proof tests and is RoHS compliant, supporting regulatory and safety considerations.

Why Choose LNU2W332MSEH?

The LNU2W332MSEH positions itself as a reliable high-voltage capacitor for industrial power and drive systems where high ripple currents, rapid charge–discharge cycles and elevated operating temperatures are common. Its combination of 3.3 mF capacitance at 450 V, robust screw-terminal packaging and defined endurance characteristics makes it suitable for designs that require predictable long-term performance.

This Nichicon LNU-series part is ideal for engineers specifying DC bus smoothing, regenerative energy buffering or inverter-related energy storage in industrial equipment. The documented test conditions (load life, insulation and voltage proof) and RoHS compliance provide measurable, verifiable attributes to support design selection and lifecycle planning.

Request a quote or contact sales to discuss availability, lead times and application-specific requirements for the LNU2W332MSEH.