LQS2G331MELB35

The LQS2G331MELB35 is a snap‑in terminal aluminum electrolytic capacitor in Nichicon’s LQS series designed for high‑speed charge‑discharge duty. It combines a 400 V rated voltage with 330 µF capacitance and a polarized snap‑in radial can package for robust power applications.

Engineered for inverter and motor‑drive environments, this part is suited for high‑frequency regenerative voltage, voltage‑fluctuating equipment and rectifier circuits such as voltage doublers, offering elevated operating temperature capability and RoHS compliance.

Key Features

• Snap‑in radial can package — Snap‑in terminals and radial can construction provide secure board mounting and mechanical stability for power assemblies.
• 400 V rated voltage & 330 µF capacitance — Supports higher DC bus voltages and bulk energy storage in compact form (Size L × D: 3.5 × 3 cm).
• High operating temperature — Rated for operation from –25 °C to 105 °C with endurance specified at 3000 hours at 105 °C.
• High‑speed charge‑discharge capability — Designed for high‑frequency regenerative voltages and repeated charge‑discharge cycles as described in the LQS series endurance tests.
• Ripple current performance — Specified ripple current of 1.44 A at 120 Hz and 2.059 A at 50 kHz to support AC and high‑frequency power electronics ripple loads.
• Capacitance tolerance and polarization — 330 µF with ±20% tolerance and polarized construction for correct DC application.
• RoHS compliant — Meets the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Inverters and drives — Bulk and decoupling capacitor for general inverters and AC servomotor drives exposed to regenerative and fluctuating voltages.
• Regenerative circuits — Supports high‑frequency regenerative voltage and repeated charge‑discharge cycles in motor control systems.
• Rectifier / voltage doubler circuits — Suitable for rectifier stages and voltage doubler topologies requiring 400 V rated capacitance.
• General power electronics — Use as a polarized bulk energy reservoir in power conversion modules where elevated temperature endurance is required.

Unique Advantages

• High voltage bulk storage: 400 V rating with 330 µF capacitance provides substantial DC bus energy storage in a compact snap‑in can.
• Designed for repeated charge‑discharge: LQS series testing includes extensive charge‑discharge endurance, making it appropriate for regenerative power cycles.
• Elevated temperature endurance: Specified for continuous operation to 105 °C with a 3000‑hour rated lifetime at that temperature for reliable high‑temperature performance.
• Measured ripple performance: Ripple current specifications at both 120 Hz and 50 kHz help designers size capacitors for low‑ and high‑frequency ripple conditions.
• Secure board mounting: Snap‑in terminals and radial can package simplify assembly and ensure mechanical stability under vibration and thermal stress.
• Regulatory compliance: RoHS compliance supports use in equipment where restricted substance compliance is required.

Why Choose LQS2G331MELB35?

The LQS2G331MELB35 positions itself as a practical solution for power electronics designers who need a 400 V, 330 µF polarized capacitor with snap‑in mounting and high‑temperature endurance. Its combination of rated voltage, capacitance, ripple handling and series‑level charge‑discharge endurance makes it well suited to inverter, motor drive and regenerative applications where repeated cycling and elevated temperatures are common.

Choosing this Nichicon LQS part provides a balance of energy storage, endurance and board‑mount robustness while maintaining RoHS compliance—delivering a component that integrates into demanding power assemblies with predictable, data‑backed characteristics.

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