LQS2W331MELC35

The LQS2W331MELC35 is a snap-in terminal aluminum electrolytic capacitor from Nichicon's LQS series, specified for high-speed charge–discharge applications. It combines a 330 µF capacitance with a 450 V rating and a –25 °C to +105 °C operating range, targeting power-electronics designs that require robust high-voltage energy storage.

Designed for use in environments with voltage fluctuation and high-frequency regenerative voltages, this capacitor is suited to inverters, AC servomotor systems and rectifier/voltage-doubler circuits where reliable high-voltage performance and long-term endurance are required.

Key Features

• Capacitance & Voltage — 330 µF rated capacitance at 450 V, providing high-voltage bulk energy storage for power conversion circuits.
• High-temperature capability — Rated for operation from –25 °C to +105 °C with an endurance specification of 3000 hours at 105 °C under DC bias plus rated ripple current.
• Snap-in terminal package — Radial can with snap-in mounting for secure PCB or chassis installation in power assemblies.
• High-speed charge–discharge design — Specifically specified for high-speed charge–discharge behavior and suited to high-frequency regenerative voltage applications.
• Ripple current performance — Rated ripple current of 1.38 A at 120 Hz (low frequency) and 1.973 A at 50 kHz (high frequency), enabling effective handling of AC ripple in power systems.
• Electrical loss and leakage — Tangent of loss angle (tan δ) for 450 V rated units up to 0.20; leakage current specification follows I ≤ 3√(C·V) μA after five minutes at 20 °C (series-level guidance).
• Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).
• Compact dimensions — Can dimensions approximately 3.5 × 3.5 cm (L × D) with snap-in form factor for power module integration.

Typical Applications

• Industrial drives & AC servomotors — Handles high-frequency regenerative voltages encountered in motor control systems and drive inverters.
• General inverters — Provides bulk energy storage and ripple handling in inverter DC-link and power stage circuits.
• Rectifier and voltage-doubler circuits — Suitable for rectifier stages and voltage-doubler topologies where high-voltage capacitance and charge–discharge endurance are needed.
• Equipment operating under fluctuating voltage — Built for environments with variable line conditions, supporting stable DC bus performance.

Unique Advantages

• High-voltage energy storage: 450 V rating with 330 µF capacitance provides substantial DC-link storage for high-voltage power designs.
• Thermal endurance: Rated to +105 °C with a specified 3000-hour endurance at that temperature, supporting reliability in elevated-temperature installations.
• Designed for rapid cycling: Specified for high-speed charge–discharge behavior and tested for charge–discharge endurance, making it appropriate for regenerative and switching applications.
• Measured ripple capability: Published ripple current values at both 120 Hz and 50 kHz allow designers to size the capacitor against real AC ripple conditions.
• Practical mounting: Snap-in terminal and radial can package simplify assembly in power modules and reduce handling complexity compared with other high-voltage packaging.
• Regulatory compliance: RoHS compliance supports use in products that require restricted-substance conformity.

Why Choose LQS2W331MELC35?

The LQS2W331MELC35 delivers a combination of high-voltage capability (450 V), substantial capacitance (330 µF), and a 105 °C temperature rating tailored for demanding power-electronics applications such as inverters, motor drives, and high-frequency regenerative systems. Its snap-in construction and defined ripple ratings make it straightforward to integrate into DC-link and rectifier designs where reliable bulk energy storage and fast charge–discharge performance are required.

As part of Nichicon's LQS series, this capacitor offers documented endurance characteristics (including 3000 hours at 105 °C) and series-level electrical parameters (tan δ, leakage current guidance), giving design and procurement teams clear, verifiable data for long-term system planning.

Request a quote or submit an inquiry to our sales team for pricing and availability of the LQS2W331MELC35 and to discuss volume requirements or lead-time options.