LGR2G331MELC40

The LGR2G331MELC40 is a snap‑in terminal aluminum electrolytic capacitor designed for long‑life, high‑voltage power applications. It delivers 330 µF capacitance at a 400 V rating in a radial, can-type snap‑in package with polarized terminals.

Engineered for sustained operation up to 105°C and offering 10,000 hours of ripple‑current endurance at that temperature, this part targets general‑purpose power filtering and smoothing in industrial and commercial power systems where high voltage and long operational life are required.

Key Features

• Capacitance & Voltage: 330 µF nominal capacitance with a 400 V rated voltage and ±20% tolerance (measured at 120 Hz, 20°C), suitable for bulk energy storage and filtering at high DC bus voltages.
• Long‑life Endurance: Rated for 10,000 hours at 105°C with applied D.C. bias plus rated ripple current; after endurance the capacitor meets specified limits for capacitance change, tan δ and leakage current.
• High Temperature Operation: Operating temperature range of −25°C to +105°C, enabling use in elevated ambient environments within its rated conditions.
• Snap‑In Radial Package: Radial, can‑style snap‑in mounting for secure panel or board installation and mechanical stability in power assemblies.
• Ripple Current Capability: Rated ripple current of 1.2 A at 120 Hz and 1.716 A at 50 kHz, with frequency coefficients provided for deriving ripple performance across common frequencies.
• Leakage & Dissipation Characteristics: Leakage current specified as I ≤ 3√(C·V) µA after 5 minutes at 20°C; tan δ maximum 0.15 for 200–400 V units (measured at 120 Hz, 20°C).
• RoHS Compliant: Manufactured in compliance with the RoHS directive.
• Compact Footprint: Physical size approximately L: 4 × D: 3.5 cm in a snap‑in can package, providing a compact high‑voltage solution for power assemblies.

Typical Applications

• Power Supplies: General‑purpose smoothing and bulk energy storage on high‑voltage DC rails in industrial and commercial power supplies.
• Power Conversion Equipment: Filtering and ripple management in converters and inverters where a 400 V rated capacitor and long life at elevated temperature are required.
• Industrial Electronics: Energy buffering and decoupling in industrial control and power distribution modules operating in higher ambient temperatures.

Unique Advantages

• Extended Operational Life: 10,000‑hour ripple endurance at 105°C provides predictable long‑term performance in sustained high‑temperature, high‑ripple environments.
• High Voltage Capability: 400 V rating supports higher DC bus designs without series stacking, simplifying BOM and layout choices.
• Broad Frequency Ripple Support: Published ripple values at 120 Hz and 50 kHz plus frequency coefficients allow accurate ripple‑current sizing across a wide frequency range.
• Measurable Electrical Limits: Clear leakage current formula (I ≤ 3√CV µA) and tan δ limits enable straightforward validation against system requirements.
• RoHS Compliance: Conforms to RoHS requirements for regulatory compliance in commercial and industrial products.
• Secure Snap‑In Mounting: Radial snap‑in terminals provide mechanical stability for power assemblies subject to vibration and handling.

Why Choose LGR2G331MELC40?

The LGR2G331MELC40 combines a 400 V rating with 330 µF capacitance and a snap‑in radial can to deliver a compact, long‑life solution for high‑voltage power filtering. Its 10,000‑hour endurance at 105°C and well‑defined electrical parameters (leakage current formula, tan δ limits, and ripple current coefficients) make it straightforward to specify and validate in demanding power assemblies.

Manufactured by Nichicon and RoHS compliant, this part is suited to designers seeking reliable, high‑voltage electrolytic capacitors for general‑purpose industrial and commercial power systems where predictable long‑term behavior and frequency‑dependent ripple performance are required.

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