LGU2G181MELC

The LGU2G181MELC is an aluminum electrolytic, snap-in terminal capacitor from Nichicon’s LGU series. It provides 180 µF capacitance at a 400 V rated voltage in a radial can snap-in package designed for general-purpose applications.

Designed for demanding thermal and ripple environments, this part withstands 3000 hours of rated ripple current at 105°C and is RoHS compliant, making it suitable where high-voltage capacitance and proven endurance are required.

Key Features

• Electrical Rating: 180 µF capacitance with a 400 V rated voltage and ±20% tolerance, providing specified bulk energy storage for high-voltage circuits.
• High ripple endurance: Specified ripple current handling of 980 mA at 120 Hz and 1.401 A at 50 kHz, and rated to withstand 3000 hours of rated ripple current at 105°C according to the LGU series endurance specification.
• Thermal range and reliability: Operates from −25°C to +105°C with endurance validated after 3000 hours at 105°C; endurance criteria include capacitance change within ±20% and leakage current within initial specified limits.
• Package & mounting: Radial, snap-in can package (snap-in terminal type) with dimensions L: 2.5 × D: 3.5 cm and polarization for correct DC orientation.
• Compliance: RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• High-voltage power filtering: Use where a 400 V rated capacitor with 180 µF capacitance is needed to smooth high-voltage rails and reduce ripple.
• DC bus energy storage: Suitable for DC bus decoupling in power conversion circuits that require sustained ripple endurance at elevated temperature.
• General-purpose electronic equipment: Fits general-purpose assemblies that require a robust, snap-in high-voltage electrolytic capacitor with validated high-temperature life.

Unique Advantages

• Validated high-temperature endurance: Endurance test of 3000 hours at 105°C ensures predictable performance in elevated-temperature installations.
• High-voltage capability: 400 V rating enables use in circuits that require higher DC working voltages without series stacking of capacitors.
• Snap-in mounting for secure PCB installation: Snap-in terminal construction speeds assembly and provides reliable mechanical retention for vertical can mounting.
• Frequency-aware ripple performance: Published ripple current values at 120 Hz and 50 kHz allow designers to evaluate AC stress across common switching and line frequencies.
• Regulatory compliance: RoHS conformity supports designs targeting regulated regions and helps simplify compliance management.

Why Choose LGU2G181MELC?

The LGU2G181MELC positions itself as a robust, high-voltage electrolytic solution for designs that demand sustained ripple handling and high-temperature endurance. Its 400 V rating, 180 µF capacitance, and 3000-hour endurance at 105°C make it appropriate for engineers specifying components for reliable energy storage and filtering in demanding environments.

This part is well suited to designers and procurement teams seeking a proven, RoHS-compliant snap-in aluminum electrolytic capacitor with clear published ripple and endurance specifications to simplify performance validation and long-term reliability planning.

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