LAK2G331MELC40

The LAK2G331MELC40 is a snap‑in terminal aluminum electrolytic capacitor offering 330 µF capacitance at a 400 V rating, designed for general‑purpose power applications. It uses a radial can, snap‑in package optimized for robust PCB mounting and high‑voltage DC circuits.

Engineered for demanding thermal and electrical conditions, this capacitor is specified for operation to 105°C and is built to withstand 2000 hours of rated ripple current at 105°C. The LAK series includes extended voltage options (200 V, 400 V and 420 V) and enhanced safety features for use in environments with fluctuating supply voltages. The part is RoHS‑compliant.

Key Features

• Capacitance & Voltage: 330 µF nominal capacitance with a 400 V rated voltage and tolerance of ±20% (−20% to +20%).
• High‑temperature endurance: Rated for operation up to 105°C with specified endurance of 2000 hours when rated ripple current is applied at 105°C.
• Snap‑in, radial can package: Snap‑in terminal mounting provides secure mechanical retention for through‑hole PCB assemblies.
• Ripple current performance: Rated ripple current of 1.21 A at 120 Hz and 1.391 A at 10 kHz, supporting smoothing and filtering in high‑stress power circuits.
• Leakage and dissipation characteristics: Leakage current specified as I ≤ 3√(C·V) µA after 5 minutes at 20°C; tangent of loss angle (tan δ) ≤ 0.20 at 120 Hz, 20°C.
• Safety features for abnormal voltages: Improved safety construction and a pressure‑relief vent designed to operate without flames, ignition, or dispersion of parts under abnormal excessive voltage conditions.
• Operating temperature range: −25°C to +105°C to accommodate elevated ambient and internal temperatures.
• Regulatory compliance: Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose power systems: Bulk filtering and energy storage in general‑purpose equipment requiring 330 µF at 400 V.
• Equipment operating in fluctuating supply environments: Suited for systems exposed to voltage variations due to its extended voltage range and improved safety features for abnormal overvoltage events.
• High‑voltage DC rails: Components for DC bus smoothing and filtering on 400 V systems where snap‑in mounting and high‑temperature endurance are required.

Unique Advantages

• Long endurance at elevated temperature: Rated to withstand 2000 hours of rated ripple current at 105°C, enabling reliable long‑term operation in hot environments.
• Designed for voltage variability: Part of an LAK series offering extended voltage options (200 V, 400 V, 420 V), providing flexibility for designs that require higher DC voltages.
• Robust mounting and mechanical stability: Snap‑in radial can simplifies board assembly and provides secure retention for through‑hole installations.
• Built‑in safety behavior: Pressure relief vent and safety testing reduce the risk of hazardous failure modes under abnormal excessive voltage.
• Clear electrical specification set: Explicit leakage current formula, tan δ limit, and ripple current ratings make it straightforward to evaluate for power and filtering designs.
• RoHS compliant: Meets RoHS requirements for use in regions requiring restricted substance compliance.

Why Choose LAK2G331MELC40?

The LAK2G331MELC40 positions itself as a reliable, high‑voltage electrolytic solution for designers needing robust smoothing and energy storage on 400 V DC rails. With a focus on high‑temperature endurance (105°C) and validated ripple performance, it is suited to applications and equipment operating in environments with variable supply voltages.

Engineers and procurement teams will find value in the clear, verifiable specifications for capacitance, voltage rating, ripple current, and safety behavior. The combination of snap‑in packaging, extended voltage options within the LAK series, and RoHS compliance supports long‑term deployment in industrial and general‑purpose power electronics applications.

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