LGX2W121MELA30

The LGX2W121MELA30 is an aluminum electrolytic capacitor in a snap-in terminal radial can designed for long-life, high-voltage power applications. As part of Nichicon's LGX series, it delivers a compact footprint and is optimized for rectifier circuits in general inverters and switching power supplies.

Key engineering attributes include a 450 V rating, 120 µF capacitance, -25 °C to 105 °C operating range, and a long-life assurance of 5000 hours at 105 °C, making it suitable where high-temperature endurance and reliable ripple-current handling are required.

Key Features

• Capacitance and Tolerance: 120 µF nominal with ±20% tolerance at 120 Hz, 20 °C for predictable filtering and energy storage performance.
• High Voltage Rating: 450 V rated voltage for use in higher-voltage rectifier and power conversion stages.
• High-Temperature, Long-Life Design: Endurance rating of 5000 hours at 105 °C under D.C. bias plus rated ripple current; capacitance change remains within ±20% after the endurance test as specified.
• Ripple Current Capability: Handles 880 mA at 120 Hz and 1.258 A at 50 kHz, supporting demanding AC ripple conditions in power supplies and inverters.
• Operating Temperature Range: Rated for -25 °C to +105 °C to cover a wide set of industrial and power-electronics environments.
• Leakage Current Specification: Leakage current meets I ≤ 3√(C·V) µA after 5 minutes’ application of rated voltage at 20 °C, supporting low-loss operation.
• Electrical Stability Metrics: tan δ maximum of 0.20 for 450 V parts (measured at 120 Hz, 20 °C) and impedance stability characterized at low temperatures (Z(-25 °C)/Z(+20 °C) up to 8 for 400–500 V range).
• Package and Mounting: Snap-in terminal radial can (polarized) in a smaller-sized package with dimensions approximately L: 3 × D: 2.5 cm and a seated height up to 1.181 inch for compact board layouts.
• Environmental Compliance: RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• General Inverters: Used in rectifier and DC-link stages where 450 V rating and high-temperature life are required for sustained operation.
• Switching Power Supplies: Suitable for input/output filtering and bulk storage in high-voltage supply rails, leveraging its ripple-current capability and long-life rating.
• General Purpose Power Electronics: Applicable where compact, high-voltage, long-life capacitors are needed for energy buffering and smoothing in industrial equipment.

Unique Advantages

• Long-Life High-Temperature Assurance: 5000-hour endurance at 105 °C provides predictable performance and reduced maintenance in high-temperature installations.
• High Voltage and Energy Density: 450 V rating combined with 120 µF capacitance supports higher-voltage power stages without excessive board area.
• Robust Ripple Handling: Rated ripple currents of 880 mA (120 Hz) and 1.258 A (50 kHz) help maintain low ripple and reliable operation under dynamic load conditions.
• Compact Snap-In Packaging: Smaller-sized radial can with snap-in terminals enables secure PCB mounting and space-efficient designs.
• Measured Electrical Stability: Specified tan δ and impedance ratios give designers quantifiable metrics for temperature and frequency behavior.
• Regulatory Compliance: RoHS compliance supports use in regulated product lines and reduces material-related risks.

Why Choose LGX2W121MELA30?

LGX2W121MELA30 is positioned for engineers designing high-voltage, high-temperature power electronics that require a compact, durable electrolytic capacitor. Its combination of 450 V capability, 120 µF capacitance, specified ripple-current ratings, and 5000-hour endurance at 105 °C delivers a balance of energy storage and thermal reliability for rectifier circuits and power-supply applications.

This part is well suited to customers seeking a proven, RoHS-compliant capacitor with clear electrical and lifetime specifications for industrial and power-conversion designs where long-term stability and board-level mounting robustness are important.

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