LQR2G332MSEG

The LQR2G332MSEG is a screw-terminal aluminum electrolytic capacitor rated at 3300 µF and 400 V, designed for high-speed charge–discharge applications. It is a radial can with screw terminals, engineered for power-electronics environments where regenerative voltages and fluctuating line conditions are present.

Typical use cases include AC servomotor regenerative circuits, general inverters and rectifier stages such as voltage-doubler configurations. The part combines high ripple handling, defined endurance at elevated temperature, and RoHS compliance for industrial power designs.

Key Features

• Capacitance & Voltage — 3.3 mF (3300 µF) nominal capacitance at a rated voltage of 400 V with ±20% tolerance.
• Screw Terminal Package — Radial can with screw terminals for secure bolted connections in power assemblies.
• High-Speed Charge–Discharge — Designed for repeated charge–discharge behavior; qualified for 20 million cycles (ΔV = rated × 0.3, 3 Hz) at room temperature per series specifications.
• Ripple Current Handling — 13.2 A at 120 Hz and 18.48 A at 10 kHz, enabling effective smoothing in both low- and high-frequency power circuits.
• Low-Frequency ESR — Equivalent series resistance of 150 mΩ measured at 120 Hz, reducing conduction losses in power applications.
• Endurance at Elevated Temperature — 5000 hours at 85°C under rated voltage and ripple conditions, with defined limits for capacitance change, tan δ and leakage current.
• Operating Temperature Range — Specified for use from -25°C to +85°C to cover common industrial ambient conditions.
• Series-Level Leakage Specification — Leakage current after 5 minutes is limited to 3√(V) µA or 5 mA, whichever is smaller (per series datasheet).
• Compliance — RoHS compliant (2011/65/EU, (EU)2015/863), supporting regulatory requirements for electronic assemblies.
• Package Dimensions — Compact radial can form factor with a size of L: 11 × D: 6.35 cm suitable for power modules and cabinets.

Typical Applications

• AC Servomotor Regenerative Circuits — Handles high-frequency regenerative voltage pulses and rapid charge–discharge cycles in motor drive systems.
• General Inverters and Drives — Provides bulk energy storage and ripple suppression for inverter DC link and smoothing stages.
• Voltage-Doubler Rectifier Circuits — Suited for rectifier configurations where stable DC bus capacitance and endurance under fluctuating voltages are required.
• Industrial Power Electronics — Useful in equipment operating in areas with voltage fluctuations where durability and high ripple capability are critical.

Unique Advantages

• High Ripple Capability: Rated ripple currents at both 120 Hz and 10 kHz support effective smoothing across a broad frequency range, improving power stability.
• Screw-Terminal Robustness: Screw terminals provide secure mechanical and electrical connections for high-current bus integration.
• Defined Endurance: 5000 hours at 85°C and validated charge–discharge endurance (20 million cycles at specified conditions) deliver predictable lifetime behavior for long-running systems.
• Low ESR at 120 Hz: 150 mΩ ESR reduces I²R losses in DC-link and filtering applications, aiding thermal management and efficiency.
• Wide Operating Range: Specified operation from -25°C to 85°C supports deployment across typical industrial ambient conditions.
• Regulatory Compliance: RoHS conformity simplifies use in products requiring restricted-substance compliance.

Why Choose LQR2G332MSEG?

The LQR2G332MSEG positions itself as a practical choice for industrial power-electronics designs that require robust bulk capacitance, secure screw-terminal connections, and validated endurance under elevated temperature and high-frequency cycling. Its combination of high ripple current capability, defined ESR, and endurance metrics makes it well suited for inverter DC links, regenerative servo circuits, and rectifier arrangements where voltage fluctuation and rapid charge–discharge events occur.

Engineers specifying the LQR2G332MSEG benefit from a component that provides predictable electrical performance and regulatory compliance for assembly-level designs, enabling reliable operation over extended duty cycles in demanding power systems.

Request a quote or submit an inquiry for pricing and availability to evaluate LQR2G332MSEG for your next power-electronics design.