LGW2W121MELA30

The LGW2W121MELA30 is an aluminum electrolytic, snap-in terminal capacitor specified for high-voltage, general-purpose designs. It provides 120 µF of capacitance at a 450 V rating, polarized construction, and is RoHS compliant.

Designed for applications that require high ripple current endurance and elevated operating temperature capability, this radial can (snap-in) capacitor is specified for continuous operation to 105°C and a rated life of 3000 hours at 105°C when subjected to rated ripple current.

Key Features

• Capacitance & Voltage — 120 µF capacitance rated at 450 V, providing high-voltage energy storage in a compact radial can snap-in package (L: 3 × D: 2.5 cm).
• High Temperature & Endurance — Rated for operation up to 105°C with an endurance specification of 3000 hours at 105°C under DC bias plus rated ripple current.
• High Ripple Current Capability — Specified ripple currents include 1.22 A at 120 Hz and 1.745 A at 50 kHz; frequency coefficients for the 400–450 V category allow scaling of rated ripple current across frequency bands.
• Reliable Electrical Characteristics — Capacitance tolerance of ±20% and polarized construction; leakage current is specified by the formula I ≤ 3√CV (µA) after 5 minutes at 20°C, enabling predictable performance.
• Snap-in Radial Package — Radial, can-type snap-in mounting provides secure mechanical retention for board-level installations and is suitable for general-purpose assemblies.
• Environmental Compliance — RoHS compliant, meeting the directive requirements listed in the product datasheet.

Typical Applications

• General-purpose power filtering — Provides DC smoothing and ripple handling on high-voltage rails where a 450 V rating and elevated temperature endurance are required.
• High-voltage DC bus decoupling — Suitable for bulk energy storage and decoupling on 400–450 V DC buses, leveraging the 120 µF capacitance and high ripple current capability.
• Industrial power electronics — Fits designs that demand 105°C operation and long-duration ripple endurance (3000 hours at 105°C) for robust performance in demanding environments.

Unique Advantages

• High-voltage capability: 450 V rating enables use on higher-voltage rails without series stacking, simplifying design.
• Proven thermal endurance: 3000-hour rated life at 105°C under rated ripple current supports long-term reliability in elevated-temperature applications.
• Quantified ripple performance: Explicit ripple current specifications at 120 Hz and 50 kHz, together with frequency coefficients for the 400–450 V range, allow predictable thermal and lifetime planning.
• Predictable leakage behavior: Leakage current specified by I ≤ 3√CV (µA) after 5 minutes at 20°C enables controlled power-loss budgeting.
• Secure PCB mounting: Snap-in radial can construction offers robust mechanical retention for assembly and serviceability.
• Regulatory compliance: RoHS compliance supports integration into designs that must meet environmental directive requirements.

Why Choose LGW2W121MELA30?

The LGW2W121MELA30 is positioned for designs that need a high-voltage aluminum electrolytic capacitor with measurable ripple handling and elevated temperature endurance. Its 450 V rating, 120 µF capacitance, snap-in radial package, and 105°C/3000-hour endurance make it a practical choice for engineers specifying components for high-voltage DC smoothing and decoupling where long-term thermal robustness and predictable electrical behavior matter.

This part is appropriate for design teams and procurement looking for a RoHS-compliant, polarized aluminum electrolytic solution with documented ripple current performance and clear leakage-current characterization for accurate system-level thermal and power planning.

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