LAK2G331MELB50

The LAK2G331MELB50 is a snap-in terminal, aluminum electrolytic capacitor in Nichicon’s LAK series, rated at 400V with 330µF capacitance. It is designed for general-purpose applications and for use in environments with fluctuating supply voltages, offering high-voltage capability in a radial, snap-in can package.

Key engineered attributes include high-temperature endurance (2000 hours at 105°C under rated ripple), pressure-relief safety features for abnormal over-voltage conditions, and RoHS compliance.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a 400 V rated voltage, tolerance ±20% (at 120 Hz, 20°C).
• High‑Temperature Endurance — Endurance specification: 2000 hours at 105°C with DC bias plus rated ripple current; after recovery to 20°C, capacitance change is within ±20% and leakage current remains at or below the initial specified value.
• Safety Performance — Pressure relief vent designed to operate without producing flames, ignition, or dangerous dispersion of parts under abnormal excessive voltage conditions. For 400 V units with capacitance ≥220 µF, limited DC current rating for safety testing is 7 A (test voltages 500 VDC and 600 VDC) as specified in the series datasheet.
• Ripple Current Ratings — Specified ripple current: 1.21 A at 120 Hz and 1.391 A at 10 kHz for this part.
• Electrical Loss & Leakage — Tangent of loss angle (tan δ) maximum 0.20 at 120 Hz, 20°C; leakage current specified by I ≤ 3√CV (µA) after 5 minutes’ application of rated voltage at 20°C.
• Package & Mounting — Radial, can-style snap-in package for secure PCB mounting; mounting type: snap-in (radial, can - snap-in).
• Operating Range — Rated for operation from −25°C to +105°C; shelf life specification includes storage at 105°C for 1000 hours followed by required voltage treatment and recovery limits (capacitance within ±15%, tan δ ≤150% of initial, leakage ≤ initial).

Typical Applications

• General Purpose Electronics — Suitable for designers specifying a 400 V, 330 µF snap-in electrolytic capacitor for general-purpose circuits.
• Equipment in Voltage‑Fluctuating Areas — The LAK2G331MELB50 is described as ideally suited for equipment used in areas with fluctuating supply voltages, due to its improved safety features and high-voltage ratings.
• High‑Temperature Environments — Appropriate where sustained operation at elevated temperatures is required, backed by a 2000-hour endurance rating at 105°C under rated ripple conditions.

Unique Advantages

• High Voltage Capability: 400 V rating provides headroom for high-voltage circuits and applications within the LAK series voltage range.
• Long High‑Temperature Life: 2000 hours endurance at 105°C under rated ripple current provides predictable performance in demanding thermal environments.
• Engineered Safety Features: Pressure-relief venting and series-defined safety test limits reduce risk during abnormal over-voltage events.
• Clear Electrical Limits: Specified tan δ, leakage current formula (I ≤ 3√CV), and ripple current values enable straightforward thermal and reliability calculations.
• Robust Mounting: Snap-in radial can package offers a secure PCB mounting option for applications requiring a through‑hole, mechanically stable capacitor.
• RoHS Compliant: Conforms to RoHS directives (2011/65/EU, (EU)2015/863), supporting regulatory requirements for restricted substances.

Why Choose LAK2G331MELB50?

The LAK2G331MELB50 delivers a combination of high voltage rating, substantial capacitance, and specified high-temperature endurance in a snap-in radial package—making it suitable for designers needing a reliable electrolytic solution for general-purpose and voltage‑variable environments. Its safety-focused design and clear electrical specifications enable predictable integration into power and industrial systems where RoHS compliance and robust thermal performance are required.

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