LQR2W332MSEG

The LQR2W332MSEG from Nichicon is a screw-terminal aluminum electrolytic capacitor in the LQR series, rated 3300 µF at 450 V with a polarized radial can package. It is designed for high-speed charge–discharge and applications that require handling high-frequency regenerative voltages and fluctuating line conditions.

Targeted use cases include AC servomotor regenerative circuits, inverters and rectifier circuits such as voltage doublers. Key value comes from its high voltage rating, substantial capacitance, built-in screw terminals for robust connections, and endurance at elevated temperature.

Key Features

• Electrical performance — 3300 µF capacitance at 450 V with ±20% tolerance, providing energy storage suitable for high-voltage power circuits.
• High ripple capability — Rated ripple current of 12.4 A at 120 Hz and 17.36 A at 10 kHz to support both low- and high-frequency ripple environments.
• High-speed charge–discharge — Part of the LQR series engineered for fast charge/discharge behavior, with endurance validated for repetitive cycling.
• Temperature and lifetime — Operating range −25 °C to +85 °C and rated endurance of 5000 hours at 85 °C under DC bias plus rated ripple current.
• Robust mechanical connection — Screw terminal mounting and radial can package provide secure, low-impedance connections for high-current paths.
• Reliability characteristics — Leakage current specification after 5 minutes meets the series limit; endurance performance assures capacitance, tan δ and leakage remain within specified limits after stress tests defined in the datasheet.
• Regulatory — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).
• Compact footprint — Physical dimensions L: 13 cm × D: 6.35 cm, suitable for cabinet- and chassis-mounted power electronics.

Typical Applications

• AC servomotor regenerative circuits — Handles high-frequency regenerative voltage and rapid charge/discharge cycles in motor drive systems.
• General inverters — Provides bulk energy storage and smoothing in inverter DC-link and intermediate circuits under fluctuating line conditions.
• Voltage doubler and rectifier circuits — Suitable for rectifier topologies that require high-voltage capacitor elements in DC bus or doubling stages.
• Power equipment in fluctuating-voltage environments — Designed to maintain performance where supply voltage varies, supporting system stability and reliability.

Unique Advantages

• High voltage and capacitance pairing — 450 V rating with 3300 µF delivers substantial energy storage for high-voltage power stages without excessive series stacking.
• Screw-terminal connectivity — Simplifies installation and provides secure, low-impedance connections for high-current applications.
• Broad ripple-frequency support — Defined ripple current values at both 120 Hz and 10 kHz address performance across low- and high-frequency noise sources.
• Endurance under elevated temperature — 5000 hours at 85 °C with DC bias plus rated ripple current ensures long-term stability in demanding thermal environments.
• Charge–discharge durability — Specified endurance for repetitive charge–discharge cycles (20 million cycles at ΔV = 0.3 × rated voltage) supports designs with frequent switching events.
• RoHS compliance — Meets relevant EU restrictions on hazardous substances for regulatory and environmental requirements.

Why Choose LQR2W332MSEG?

LQR2W332MSEG is positioned for engineers who need a high-voltage, high-capacitance electrolytic capacitor with reliable screw-terminal connections and proven endurance at elevated temperatures. Its combination of 450 V rating, 3300 µF capacitance, defined ripple current at multiple frequencies, and long-term endurance makes it suitable for power conversion and motor-control designs exposed to fluctuating voltages and frequent charge/discharge cycles.

This capacitor is a practical choice for power electronics designers seeking robust energy storage and connection reliability while maintaining RoHS compliance and documented endurance characteristics from the Nichicon LQR series.

Request a quote or submit an inquiry to receive pricing, availability, and ordering information for LQR2W332MSEG.