LAK2G271MELB40ZB

The LAK2G271MELB40ZB is a Nichicon LAK series aluminum electrolytic capacitor in a snap-in radial can package, offering 270 µF capacitance at a 400 V rating. Designed for general-purpose power electronics, it targets applications that require high-voltage bulk capacitance with robust thermal and safety characteristics.

As part of the LAK series, this part supports extended voltage ranges and includes improved safety features for abnormally excessive voltage. It is RoHS compliant (2011/65/EU, (EU)2015/863).

Key Features

• Rated Capacitance: 270 µF nominal with a tolerance of ±20% (measured at 120 Hz, 20°C).
• High Voltage Rating: 400 V rated voltage suitable for higher-voltage power rails and bulk energy storage.
• High Temperature Endurance: Operating temperature range −25°C to +105°C with endurance specified as 2000 hours at 105°C.
• Ripple Current Capability: Rated ripple current of 980 mA at 120 Hz and 1.127 A at 10 kHz for handling AC ripple on DC rails.
• Leakage Current Specification: Leakage current specified by I ≤ 3√(C·V) μA after 5 minutes at 20°C (C = µF, V = V), enabling predictable standby and leakage behavior.
• Safety and Abnormal Voltage Handling: Improved safety features for abnormally excessive voltage and a pressure-relief vent designed to operate without dangerous outcomes under test conditions.
• Packaging & Mounting: Snap-in terminal radial can simplifies board insertion and mechanical retention for power assemblies. Approximate body size L: 4 × D: 3 cm.
• Environmental Compliance: Compliant with RoHS directives (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies: Bulk smoothing and energy storage for AC/DC and DC/DC converters where 400 V DC rails are present.
• Power Conversion & Inverters: DC-link and filter capacitor for inverters and converters that require high-voltage capacitance and ripple handling.
• Uninterruptible Power Supplies (UPS): Energy buffering and ripple suppression on high-voltage storage rails.
• Motor Drive Electronics: DC-link smoothing for drives and power modules operating with fluctuating input voltages.

Unique Advantages

• High-voltage bulk capacitance: 270 µF at 400 V provides substantial energy storage for high-voltage power rails.
• Designed for elevated temperature operation: 2000-hour endurance at 105°C supports sustained performance in warm operating environments.
• Predictable ripple handling: Specified ripple currents at 120 Hz and 10 kHz make it easier to size components for ripple and thermal budgets.
• Safety-focused construction: Improved abnormal-voltage measures and a pressure-relief vent reduce risk in overvoltage events under the series test conditions.
• Board-ready snap-in package: Radial snap-in can simplifies mechanical retention and assembly for power modules and chassis-mounted designs.
• Regulatory compliance: RoHS conformity supports designs targeting regulated markets.

Why Choose LAK2G271MELB40ZB?

The LAK2G271MELB40ZB is positioned for power designers who need a high-voltage aluminum electrolytic capacitor with proven thermal endurance and explicit safety measures. Its combination of 400 V rating, 270 µF capacitance, and 2000-hour endurance at 105°C delivers a durable bulk energy-storage option for converters, inverters, UPS systems, and other general-purpose power equipment operating in voltage-fluctuating environments.

Engineers specifying this part benefit from well-defined electrical parameters (including leakage current formulation and ripple current ratings) and RoHS compliance, simplifying integration into regulated product designs that require predictable long-term performance.

Request a quote or contact sales to discuss LAK2G271MELB40ZB availability, lead times, and sample or volume pricing tailored to your design requirements.