LAQ2G331MELB45ZB

The LAQ2G331MELB45ZB is a 330 µF, 400 V aluminum electrolytic capacitor in a snap‑in radial can designed for general‑purpose power applications. It is part of Nichicon's LAQ series, offering a smaller case size with enhanced ripple capability and improved safety handling for abnormally excessive voltages.

Engineered for operation from -25°C to 105°C, this snap‑in capacitor withstands 2000 hours of rated ripple current at 105°C and is suitable for equipment used in environments with fluctuating supply voltage. The part is RoHS compliant.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a 400 V rated voltage; capacitance tolerance is ±20% (measured at 120 Hz, 20°C).
• High‑temperature Endurance — Specified endurance: 2000 hours under D.C. bias plus rated ripple current at 105°C; after endurance testing, capacitance change remains within ±20% and leakage current remains at or below initial specified values.
• Ripple Current Capability — Rated ripple current: 1.47 A at 120 Hz and 1.69 A at 10 kHz, supporting high‑ripple applications at elevated temperatures.
• Package & Mounting — Snap‑in radial can package for secure chassis or module mounting; nominal dimensions L: 4.5 × D: 3 cm and polarization as a polarized electrolytic.
• Safety & Abnormal Voltage Performance — Designed with permissible abnormal voltage handling and a pressure relief vent engineered to operate without flame, ignition, or dangerous case dispersion under test conditions.
• Electrical Stability — Low loss characteristic with tan δ ≤ 0.20 (120 Hz, 20°C) and a leakage current specified by I ≤ 3√C (μA) after 5 minutes at rated voltage (20°C).
• Environmental Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose equipment — Bulk energy storage and filtering in a wide range of industrial and commercial applications where a 400 V rated snap‑in capacitor is required.
• Voltage‑fluctuating environments — Suited for equipment operating in areas with unstable supply voltage thanks to permissible abnormal voltage design and safety venting.
• High‑ripple, high‑temperature systems — Components requiring sustained ripple handling at elevated temperatures can leverage the 2000‑hour endurance at 105°C.
• Chassis and power module assemblies — Snap‑in radial mounting provides a robust mechanical attachment for power electronics enclosures and modules.

Unique Advantages

• Compact high‑voltage solution: 400 V rating in a smaller case size allows high‑voltage capability without excessive board or chassis footprint.
• Designed for elevated ripple stress: Specified ripple currents at 120 Hz and 10 kHz and a 2000‑hour endurance at 105°C reduce the need for oversized capacitors in high‑ripple designs.
• Improved abnormal‑voltage safety: Permissible abnormal voltage design and pressure relief venting minimize hazardous failure modes under test conditions.
• Measured electrical stability: Tight limits on tan δ and leakage current, plus defined post‑endurance capacitance retention, support predictable long‑term performance.
• RoHS compliance: Meets regulatory requirements for lead‑free applications and environmentally conscious designs.
• Secure snap‑in mounting: Radial snap‑in package provides reliable mechanical retention for power assemblies and chassis installations.

Why Choose LAQ2G331MELB45ZB?

LAQ2G331MELB45ZB balances compact packaging with high‑voltage and high‑ripple performance for general‑purpose power applications. Its 400 V rating, 330 µF capacitance, and endurance at 105°C make it well suited to designers needing reliable bulk capacitance in environments with supply fluctuations and elevated thermal stress.

Backed by Nichicon's LAQ series design parameters, this capacitor offers predictable electrical characteristics, safety features for abnormal voltage conditions, and RoHS compliance—providing a durable component choice for industrial and commercial power systems.

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