LGN2H181MELA50

The LGN2H181MELA50 is a Nichicon LGN-series snap-in aluminum electrolytic capacitor specified at 180 µF and 500 V. It is a polarized, radial can package designed for general-purpose power applications that require a compact high-voltage capacitor with robust ripple-current endurance.

Built for continuous operation up to 105°C, this part withstands 3000 hours of rated ripple-current stress at 105°C and is RoHS compliant, offering a balance of high-voltage capability and long-term reliability in demanding power circuits.

Key Features

• High voltage rating (500 V) — Supports circuits requiring a 500 V working voltage for energy storage and smoothing in high-voltage power stages.
• Capacitance and tolerance — 180 µF nominal capacitance with ±20% tolerance at 120 Hz, 20°C, suitable for predictable bulk capacitance in design calculations.
• Snap-in radial can package — Snap-in terminal mounting for secure PCB retention and mechanical stability in power assemblies.
• 105°C endurance: 3000 hours — Withstands 3000 hours of rated ripple-current application at 105°C (applies to 500 V rating), delivering durability under elevated thermal stress.
• Ripple current capability — Rated ripple current performance of 900 mA at 120 Hz and 1.287 A at 100 kHz, providing specified AC handling across common frequencies.
• Leakage current specification — Leakage current limited to I ≤ 3/√C µA after 5 minutes at 20°C (C in µF), enabling predictable standby and leakage behavior.
• Operating temperature range — –25°C to +105°C for this voltage class, supporting operation across a wide temperature span for industrial applications.
• Compact case — One rank smaller case size than the LGU series, offering space savings while maintaining performance; physical size approximately 50 × 25 mm with seated height up to 1.969 inches.
• RoHS compliant — Conforms to applicable RoHS directives, supporting regulatory requirements for lead-free assembly.

Typical Applications

• General-purpose power filtering — Provides bulk capacitance and smoothing in high-voltage power supplies and DC circuits where 500 V rating and high ripple tolerance are required.
• DC bus and energy storage — Used for DC link and energy-storage duties in converters and power stages that demand stable capacitance and long-term endurance at elevated temperatures.
• Industrial power electronics — Suitable for power modules and assemblies that need a compact, high-voltage capacitor with snap-in mounting and reliable ripple handling.

Unique Advantages

• Long endurance at elevated temperature — 3000 hours at 105°C under rated ripple current helps ensure predictable life and reduced maintenance in continuous-duty installations.
• High ripple-current capability across frequencies — Specified ripple current at both 120 Hz and 100 kHz supports designers addressing low- and high-frequency AC stress.
• Predictable leakage behavior — Leakage current defined by I ≤ 3/√C µA after 5 minutes enables conservative power budgeting and thermal management.
• Space-efficient packaging — One-rank smaller case than the LGU series saves board space without sacrificing voltage or endurance properties.
• Robust mounting — Snap-in terminals provide reliable mechanical retention for high-vibration or heavy-current assemblies.
• Regulatory readiness — RoHS compliance supports integration into lead-free manufacturing processes.

Why Choose LGN2H181MELA50?

LGN2H181MELA50 combines a high 500 V rating with 180 µF capacitance in a snap-in radial can designed for long-term operation at up to 105°C. Its 3000-hour ripple-current endurance and specified ripple performance at both low and high frequencies make it a dependable choice for designers who need compact, high-voltage bulk capacitance with predictable leakage and thermal behavior.

This part is well suited for engineers specifying general-purpose high-voltage capacitors in power supplies, converters, and industrial power electronics where regulatory conformity, mechanical robustness and long operational life are important considerations.

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