LQR2V332MSEF

The LQR2V332MSEF is a screw-terminal aluminum electrolytic capacitor designed for high-speed charge–discharge duty in high-voltage DC link applications. With a rated capacitance of 3.3 mF at 350 V and a polarization design, it targets power-electronics use cases where robust energy buffering and high-frequency regenerative behavior are required.

This part is suited for AC servomotor regenerative circuits, general inverters, rectifier circuits such as voltage doublers, and equipment operating in voltage-fluctuating environments. It is RoHS compliant and engineered to deliver defined lifetime and ripple performance under elevated temperatures.

Key Features

• Electrical rating: 3.3 mF (3300 µF) nominal capacitance at 350 V rated voltage with ±20% tolerance (120 Hz, 20°C).
• High-speed charge–discharge capability: Designed for repeated charge–discharge cycles and specified endurance of charge–discharge behavior (20 million cycles at ΔV = rated voltage × 0.3, 3 Hz, room temperature).
• High ripple performance: Ripple current specified at 12.4 A (120 Hz) and 17.36 A (10 kHz), supporting both low- and high-frequency ripple conditions.
• Temperature and lifetime: Operating temperature range −25°C to +85°C with endurance specified as 5000 hours at 85°C under DC bias plus rated ripple current.
• Reliability characteristics: Leakage current limit after 5 minutes is specified as not more than 3√V (µA) or 5 mA, whichever is smaller; impedance ratio Z(−25°C)/Z(+20°C) ≤ 8.
• Mechanical and mounting: Screw terminal, radial can package intended for secure bolted connections in power assemblies; package dimensions L: 13 cm × D: 5.1 cm.
• Environmental compliance: Compliant to the RoHS Directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor regenerative circuits: Handles high-frequency regenerative voltages and energy recovery in servo drives.
• General inverters: Provides DC link energy buffering and supports high ripple currents in inverter power stages.
• Voltage-doubler rectifier circuits: Suitable for rectifier configurations such as voltage doublers where elevated DC voltage and capacitance are required.
• Equipment in fluctuating-voltage environments: Designed for systems exposed to frequent voltage swings where stable capacitance and endurance are needed.

Unique Advantages

• High-voltage energy storage: 350 V rated voltage with 3.3 mF capacitance provides substantial DC link energy capacity for power-electronics designs.
• Proven ripple handling across frequencies: Specified ripple currents at 120 Hz and 10 kHz demonstrate capability for both mains-frequency smoothing and high-frequency switching environments.
• Durability under thermal stress: Endurance rating of 5000 hours at 85°C ensures predictable life performance in elevated-temperature installations.
• Charge–discharge endurance: Tested for 20 million charge–discharge cycles at defined ΔV and frequency, supporting repetitive energy-exchange applications.
• Secure screw-terminal mounting: Heavy-duty screw terminals and radial can packaging simplify installation and deliver reliable electrical and mechanical connections.
• Regulatory compliance: RoHS compliance supports use in regions requiring restriction of hazardous substances.

Why Choose LQR2V332MSEF?

LQR2V332MSEF is positioned for power-electronics systems that need a high-voltage, high-capacitance, screw-terminal capacitor with specified ripple and endurance performance. Its combination of 350 V rating, substantial capacitance, defined ripple current capability at both low and high frequency, and endurance data makes it well suited to inverter and regenerative drive designs subject to frequent voltage swings.

This part offers measurable long-term value through documented endurance (5000 hours at 85°C) and charge–discharge durability, helping engineers specify predictable energy-storage behavior in demanding applications while maintaining compliance with RoHS requirements.

Request a quote or submit an inquiry for pricing and availability of LQR2V332MSEF to evaluate suitability for your power-electronics design needs.