LQR2V332MSEG

The LQR2V332MSEG is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series, specified for high-speed charge–discharge duty. It delivers 3300 µF capacitance at a 350 V rating and is engineered for power-electronics environments that demand robust energy storage and rapid transient handling.

Targeted use cases include regenerative voltage handling in AC servomotors, general inverters, rectifier circuits for voltage doublers and equipment operating in areas with fluctuating supply voltages. The part combines high ripple-current capability with a wide operating temperature range for dependable performance in industrial power systems.

Key Features

• Capacitance and voltage: 3300 µF nominal capacitance at a 350 V rated voltage, providing substantial bulk energy storage for power conversion and smoothing applications.
• High-speed charge–discharge design: Engineered for repeated rapid charge and discharge cycles; endurance validated for charge–discharge behavior per the LQR series specification.
• High ripple-current capability: Rated ripple current of 11.9 A at 120 Hz and 16.66 A at 100 kHz, supporting both low- and high-frequency ripple present in inverter and regenerative circuits.
• Robust endurance: Designed for 5000 hours of operation at 85 °C under rated conditions, with capacitance and leakage current meeting specified limits after endurance testing.
• Operating temperature range: Specified −25 °C to +85 °C to cover a broad span of industrial operating environments.
• Screw terminal mounting: Radial can package with screw terminals for secure, high-current connections and straightforward field installation.
• Regulatory compliance: RoHS compliant (2011/65/EU, (EU)2015/863), suitable for designs requiring RoHS adherence.

Typical Applications

• AC servomotor regenerative systems: Handles high-frequency regenerative voltages to stabilize DC link and absorb energy during braking cycles.
• General inverters and motor drives: Provides bulk energy storage and high ripple-current support for inverter DC-link smoothing and transient handling.
• Voltage-doubler rectifier circuits: Suited for rectifier stages where higher DC voltages are generated and stable capacitance is required.
• Equipment in fluctuating-voltage environments: Designed to tolerate and stabilize supply fluctuations in industrial installations and other variable-voltage conditions.

Unique Advantages

• High-voltage capability: 350 V rating enables use in medium-voltage DC-link and rectifier topologies where higher voltages are required.
• Designed for high-frequency ripple: Specified ripple current at 100 kHz (16.66 A) supports modern inverter and regenerative power profiles.
• Screw-terminal reliability: Mechanical screw terminals provide robust electrical connections for high-current paths and simplified mounting.
• Proven endurance at elevated temperature: 5000 hours at 85 °C endurance rating offers predictable long-term behavior for industrial applications.
• Wide operating temperature window: −25 °C to +85 °C allows deployment across diverse ambient conditions common in factory and field equipment.
• RoHS compliant: Meets RoHS Directive requirements for restricted substance content in electronic assemblies.

Why Choose LQR2V332MSEG?

The LQR2V332MSEG delivers a balance of high-capacitance energy storage, a 350 V voltage rating and engineered high-frequency charge–discharge capability, making it well suited for power-electronics applications such as inverters, motor drives and rectifier circuits. Its screw-terminal package and validated endurance performance at 85 °C provide designers with a practical, serviceable solution for demanding industrial environments.

This part is appropriate for engineers specifying DC-link smoothing and regenerative energy absorption solutions where high ripple current, robust mounting and RoHS compliance are required. Selected from Nichicon’s LQR series, it aligns with designs that prioritize operational reliability and predictable aging characteristics under rated conditions.

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