LQR2W332MSEHBB

The LQR2W332MSEHBB is a screw-terminal aluminum electrolytic capacitor from Nichicon's LQR series, rated at 3300 µF and 450 V with an operating temperature range of -25 °C to +85 °C. It is designed for applications requiring high-voltage energy buffering and fast charge–discharge performance, including regenerative voltage handling and inverter power stages.

Specifically suited for high-frequency regenerative voltage in AC servomotors and general inverters, this radial can with screw terminals delivers robust ripple handling and endurance for equipment operating in areas with fluctuating voltages and for rectifier circuits such as voltage doublers. The part is RoHS compliant.

Key Features

• Capacitance & Voltage: 3.3 mF (3300 µF) nominal capacitance at a rated voltage of 450 V for high-voltage energy storage and smoothing.
• Screw Terminal Package: Radial can with screw terminals provides a secure, high-current connection method suitable for power electronics assemblies.
• High-speed Charge–Discharge: Designed for 85 °C high-speed charge–discharge operation, making it appropriate for regenerative and dynamic power environments.
• Operating Temperature & Lifetime: Specified for -25 °C to +85 °C with an endurance rating of 5000 hours at 85 °C under DC bias plus rated ripple current.
• Ripple Current Performance: Rated ripple current of 11.8 A at 120 Hz and 16.52 A at 10 kHz to support high-frequency power conversion and regenerative loads.
• Polarized with Standard Tolerance: Polarized aluminum electrolytic design with capacitance tolerance of ±20% at 120 Hz, 20 °C.
• Leakage and Reliability Specs: Leakage current after 5 minutes is specified as not more than 3√(√V) μA or 5 mA (whichever is smaller); endurance and charge–discharge behavior are defined to retain capacitance within ±20% after specified tests.
• Physical Size and Marking: Physical dimensions L: 10 cm × D: 7.62 cm, with marking printed in white on a dark brown sleeve for easy identification.

Typical Applications

• Industrial Motor Drives: Energy buffering and regenerative voltage handling for AC servomotors where frequent charge–discharge cycles occur.
• Inverters and Power Conversion: Bulk smoothing and ripple handling in general inverters and high-voltage power conversion stages.
• Regenerative Brake and Energy Recovery Systems: Supports high-frequency regenerative voltage capture and release in systems that recover braking energy.
• Rectifier & Voltage Doubler Circuits: Suitable for rectifier circuits, including voltage-doubler topologies, where stable high-voltage capacitance is required.

Unique Advantages

• High Voltage Handling: 450 V rating enables use in elevated-voltage power circuits without exceeding the component’s specified voltage capability.
• Large Energy Storage: 3300 µF nominal capacitance provides substantial energy buffering for smoothing and transient support in power electronics.
• Robust Ripple Capability: High ripple current ratings at both low and high frequencies reduce thermal stress and improve performance in high-frequency environments.
• Endurance under Stress: 5000 hours endurance at 85 °C with DC bias plus ripple current provides predictable lifetime behavior for industrial applications.
• Secure, Serviceable Connections: Screw terminal mounting simplifies assembly and maintenance in heavy-current installations.
• Regulatory Compliance: RoHS compliant to the 2011/65/EU directive and (EU)2015/863, supporting environmentally conscious designs.

Why Choose LQR2W332MSEHBB?

The LQR2W332MSEHBB positions itself as a high-voltage, high-capacitance solution for power-electronics designs that require reliable energy buffering, robust ripple handling, and durability under frequent charge–discharge cycles. Its screw-terminal can package and defined endurance make it suitable for industrial inverter systems, regenerative motor drives, and rectifier configurations where stable performance at up to 85 °C is necessary.

Engineers specifying this Nichicon LQR-series part will benefit from clear, verifiable performance parameters—ripple current ratings, leakage specifications, and lifecycle endurance—that support predictable system behavior and maintenance planning in demanding power applications.

Request a quote or contact sales to discuss availability, lead times, and to submit a specification inquiry for the LQR2W332MSEHBB.