LGR2W121MELA45

The LGR2W121MELA45 is an aluminum electrolytic, snap-in terminal capacitor in Nichicon's LGR long-life series. It provides 120 µF capacitance at a 450 V rating in a radial, can-style snap-in package designed for general-purpose high-voltage applications.

Engineered for durability, this part is specified to withstand 10,000 hours of ripple-current operation at 105°C, combining high-voltage capability, measurable ripple handling, and RoHS compliance for reliable, long-term operation in demanding environments.

Key Features

• Electrical Performance: 120 µF nominal capacitance with ±20% tolerance and a 450 V rated voltage for high-voltage circuit use.
• Long-life Endurance: Designed as part of the LGR long-life series to withstand 10,000 hours of rated ripple current at 105°C.
• Ripple Current Capability: Rated ripple current of 720 mA at 120 Hz and 1.03 A at 50 kHz for effective smoothing under AC load; frequency coefficients from the LGR series are provided for frequency scaling.
• Thermal Range and Stability: Operating temperature range of −25°C to +105°C for 400 V and 450 V types; tan δ maximum for 450 V is 0.20 (measured at 120 Hz, 20°C).
• Mechanical & Mounting: Radial can with snap-in terminals and a compact footprint (L: 4.5 × D: 2.5 cm) for secure board mounting and space-efficient implementation.
• Leakage Current Specification: Leakage current follows the series guideline I ≤ 3√(C·V) μA after 5 minutes’ application of rated voltage at 20°C.
• Environmental Compliance: RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• High-voltage power circuits: Provides bulk smoothing and ripple handling in general-purpose circuits operating up to 450 V where long-term ripple endurance is required.
• Industrial power conversion: Suitable for general-purpose industrial equipment requiring high-voltage capacitance with sustained operation at elevated temperatures.
• Commercial power supplies: Useful for energy storage and filtering in commercial electronic power supplies where 450 V rating and high ripple capability are needed.

Unique Advantages

• Long-duration ripple endurance: Specified to withstand 10,000 hours of ripple-current application at 105°C, providing predictable life performance in continuous-duty installations.
• High-voltage, high-capacitance combination: 120 µF at 450 V delivers substantial energy storage for high-voltage systems while maintaining a compact radial snap-in package.
• Measured ripple specifications: Published ripple current values (720 mA at 120 Hz; 1.03 A at 50 kHz) allow engineers to size capacitors against expected AC stress with frequency coefficients available from the series data.
• Secure snap-in mounting: Radial, snap-in terminal design enables reliable mechanical retention on PCBs for robust assembly and serviceability.
• Predictable electrical limits: Leakage current defined by the series formula and a specified tan δ for 450 V (0.20 max) help with thermal and loss budgeting during design.
• RoHS compliance: Meets RoHS directives (2011/65/EU, (EU)2015/863) for regulatory and environmental compatibility.

Why Choose LGR2W121MELA45?

The LGR2W121MELA45 is positioned for designs that require reliable high-voltage bulk capacitance with documented long-life endurance at elevated temperature. Its 450 V rating, 120 µF capacitance, and series-proven 10,000-hour ripple endurance at 105°C make it suitable for engineers specifying predictable performance and longevity in general-purpose power and industrial circuits.

This part is a practical choice for teams focused on long-term robustness and clear, measurable electrical characteristics—delivering high-voltage energy storage, defined ripple-handling capability, and secure snap-in mounting in a RoHS-compliant package.

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