LGW2W331MELB45

The LGW2W331MELB45 is a Nichicon LGW series aluminum electrolytic capacitor in a radial, snap‑in can package designed for general‑purpose power applications. It provides 330 µF capacitance at a 450 V rating and is polarized for DC use.

Engineered for elevated temperature operation and sustained ripple loading, this part withstands 3000 hours application of rated ripple current at 105°C and is RoHS compliant.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a 450 V rated voltage, suitable for high‑voltage DC smoothing and energy storage.
• High ripple current capability — Rated ripple current of 2.2 A at 120 Hz (low frequency) and 3.146 A at 50 kHz (high frequency), supporting demanding ripple environments.
• High‑temperature endurance — Designed to withstand 3000 hours of rated ripple current at 105°C, maintaining capacitance and leakage within the specified endurance limits.
• Operating temperature range — Specified for −25°C to +105°C operation, enabling use across a wide thermal envelope.
• Mounting & package — Snap‑in terminal, radial can package for secure PCB mounting in power assemblies.
• Polarized design — Polar capacitor suitable for DC filtering and bulk energy storage applications.
• Leakage current specification — Leakage current conforms to I ≤ 3√CV (µA) after 5 minutes at 20°C, per the series datasheet.
• Tolerance — Capacitance tolerance of −20% to +20% (±20%).
• RoHS compliance — Meets RoHS directive requirements (2011/65/EU, (EU)2015/863).
• Physical size — Compact radial can with dimensions L: 4.5 × D: 3 cm and maximum seated height 1.772 inch, suitable for constrained power enclosures.

Typical Applications

• Power supplies — Bulk smoothing and ripple filtering in high‑voltage DC power supplies and industrial converters.
• Motor drives and inverters — Energy buffering and ripple absorption where elevated operating temperature and sustained ripple are present.
• Uninterruptible power systems (UPS) — DC link and energy storage roles that require high voltage rating and long high‑temperature endurance.
• Industrial electronic equipment — General‑purpose DC decoupling and energy storage in factory and process control electronics.

Unique Advantages

• High ripple endurance: Withstands 3000 hours of rated ripple current at 105°C, helping maintain performance under continuous high‑load conditions.
• High voltage capability: 450 V rating enables use in high‑voltage DC circuits without additional series components.
• Frequency‑aware ripple performance: Specified ripple currents at both 120 Hz and 50 kHz (2.2 A and 3.146 A respectively) allow designers to size capacitors for their operating spectrum.
• Robust mounting: Snap‑in radial can provides secure mechanical retention for power modules and assemblies.
• Predictable leakage behavior: Leakage current follows the datasheet formula I ≤ 3√CV (µA) after 5 minutes at 20°C, aiding in design margin calculations.
• Regulatory compliance: RoHS compliance supports environmental and regulatory requirements for commercial products.

Why Choose LGW2W331MELB45?

The LGW2W331MELB45 is positioned for designs that demand a high‑voltage, high‑ripple aluminum electrolytic capacitor with proven high‑temperature endurance. Its 450 V rating, 330 µF capacitance, and specified ripple capabilities at both low and high frequencies make it a strong choice for industrial power supplies, inverter DC links, and UPS systems where sustained ripple and elevated ambient temperatures are expected.

As part of Nichicon’s LGW series, this snap‑in, radial can option offers a compact footprint, predictable leakage and tolerance characteristics, and RoHS compliance—supporting long‑term reliability and maintenance planning in professional power designs.

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