LAK2G331MELC40ZB

The LAK2G331MELC40ZB is a Nichicon LAK series aluminum electrolytic capacitor in a snap-in terminal radial can. It delivers 330 µF capacitance at a 400 V rating with ±20% tolerance, targeted for general-purpose power filtering and applications exposed to voltage fluctuation.

Designed for robust operation, this snap-in capacitor combines high ripple-current capability, a 2000-hour endurance at 105°C, and safety features from the LAK series to offer reliable DC bus and bulk energy storage performance in demanding environments.

Key Features

• Capacitance and Voltage: 330 µF nominal capacitance with a 400 V rated voltage and ±20% tolerance, providing bulk energy storage for high-voltage DC circuits.
• High Temperature Endurance: 2000 hours rated life at 105°C under rated ripple current, supporting long-term operation in elevated-temperature environments.
• Ripple Current Performance: 1.21 A at 120 Hz (low frequency) and 1.391 A at 10 kHz (high frequency), enabling effective smoothing of both low- and high-frequency ripple components.
• Loss and Leakage Characteristics: Tangent of loss angle (tan δ) ≤ 0.20 at 20°C and 120 Hz, and a specified leakage current of 1080 µA, allowing predictable dissipation and self-discharge behavior.
• Safety and Robustness: LAK series safety design includes improved safety features for abnormal voltage and a pressure-relief vent mechanism to reduce hazardous failure modes.
• Package and Mounting: Snap-in terminal, radial can package (φ35 × 40L; L: 4 × D: 3.5 cm) for secure PCB mounting and high-current connection integrity.
• Temperature Range and Compliance: Rated for −25°C to +105°C operating range and compliant with RoHS (2011/65/EU, (EU)2015/863).

Typical Applications

• General-purpose power filtering: Bulk smoothing and DC bus filtering where 330 µF at 400 V and specified ripple currents (1.21 A @120 Hz, 1.391 A @10 kHz) are required.
• Equipment in voltage-fluctuating environments: LAK series construction and improved safety features make this part suitable for systems exposed to variable or transient voltages.
• High-temperature enclosures: 2000-hour endurance at 105°C supports use in assemblies with sustained elevated operating temperatures.

Unique Advantages

• Long endurance at elevated temperature: 2000 hours at 105°C ensures predictable lifetime behavior in hot operating conditions.
• Measured ripple capability: Distinct low- and high-frequency ripple current ratings enable designers to quantify filtering performance across frequencies.
• Series-level safety design: LAK series improved safety features and pressure-relief venting reduce risk under abnormal voltage conditions.
• Snap-in radial package: Robust mechanical mounting for power electronics assemblies where secure board attachment is required.
• Clear electrical characterization: Specified tan δ (≤ 0.20 at 20°C/120 Hz) and leakage current values provide reliable electrical modeling and BOM validation.
• RoHS compliant: Meets RoHS directives, simplifying environmental compliance for new designs.

Why Choose LAK2G331MELC40ZB?

LAK2G331MELC40ZB is positioned for designers who need a high-voltage aluminum electrolytic capacitor with proven thermal endurance and measurable ripple-handling capability. Its combination of 330 µF at 400 V, defined loss/leakage characteristics, and LAK series safety features makes it appropriate for general-purpose power filtering and systems operating in voltage-variable or elevated-temperature conditions.

For engineers specifying long-life electrolytic solutions, this part balances bulk capacitance, ripple performance, and series-level safety considerations from Nichicon, enabling straightforward integration into power supplies and industrial equipment designs that require predictable electrical and thermal behavior.

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