LGW2G181MELA30

The LGW2G181MELA30 is a snap-in terminal aluminum electrolytic capacitor from Nichicon’s LGW series. It is a polarized, radial can-type capacitor rated 400 V with a nominal capacitance of 180 µF, designed for general-purpose power electronics where high ripple current capability and elevated operating temperature are required.

Targeted for applications requiring robust ripple endurance and compact energy storage, this capacitor delivers validated performance up to 105°C and is RoHS compliant.

Key Features

• Rated Performance — 180 µF capacitance at 400 V nominal rating, with ±20% tolerance.
• High Ripple Current Capability — Specified ripple current of 1.43 A at 120 Hz and 2.045 A at 50 kHz for effective AC stress handling in power circuits.
• 105°C Endurance — Withstands 3000 hours of rated ripple current at 105°C; post-test limits include capacitance change within ±20% and leakage current meeting initial specification.
• Operating Temperature — Rated for operation from -25°C to +105°C, suitable for elevated-temperature environments within that range.
• Snap-In Radial Can Package — Snap-in mounting for secure PCB retention and robust mechanical connection in power assemblies; package dimensions approximately φ25 × 30 mm (L: 3 × D: 2.5 cm).
• Environmental Compliance — Compliant with RoHS directives (2011/65/EU, (EU)2015/863).

Typical Applications

• Power Supplies — DC-link and smoothing in high-voltage power supplies where 400 V rating and high ripple capability improve voltage stability.
• DC-DC Converters — Input/output filtering for converters that require compact bulk capacitance with proven ripple endurance at elevated temperatures.
• Industrial Power Electronics — Energy storage and ripple suppression in industrial inverters, drives, and motor controllers operating within the product’s temperature and voltage limits.

Unique Advantages

• Proven Ripple Endurance — Rated to withstand 3000 hours of rated ripple current at 105°C, providing predictable long-term behavior under continuous AC stress.
• High-Voltage Capacity — 400 V rating enables use in higher-voltage sections of power systems without series stacking.
• Frequency-Responsive Ripple Handling — Specified ripple current values at both low (120 Hz) and higher (50 kHz) frequencies facilitate selection for a range of switching and line-frequency applications.
• Compact Snap-In Form Factor — Radial snap-in can (φ25 × 30 mm footprint) simplifies mounting for board-level power modules while maintaining substantial capacitance.
• Regulatory Compliance — RoHS-compliant construction supports environmentally constrained designs.

Why Choose LGW2G181MELA30?

The LGW2G181MELA30 combines a 400 V rating and 180 µF capacitance in a compact snap-in aluminum electrolytic package engineered for sustained ripple operation at elevated temperatures. Its endurance specification—3000 hours at 105°C under rated ripple current—makes it suitable for designers who need reliable bulk capacitance and predictable aging in demanding power applications.

Manufactured by Nichicon and offered as part of the LGW series, this part is aimed at engineers and procurement teams building power supplies, converters, and industrial power electronics that require a balance of voltage rating, ripple capability, and RoHS compliance.

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