LGG2W391MELB40

The LGG2W391MELB40 is an aluminum electrolytic capacitor from Nichicon's LGG series, featuring a snap-in terminal can construction in a compact φ30×40L package and supplied in tray packing for mass production. It delivers 390 µF capacitance at a 450 V rating and is specified for general-purpose applications where a compact, high-voltage electrolytic solution is required.

Designed as an ultra-smaller-sized snap-in type, the LGG series is suited for equipment downsizing while offering extended endurance and RoHS compliance for environmentally conscious designs.

Key Features

• Electrical Capacity: 390 µF nominal capacitance with ±20% tolerance at 120 Hz, 20°C.
• High Voltage Rating: Rated voltage 450 V suitable for high-voltage general-purpose circuits.
• Ripple Performance: Rated ripple currents of 1.38 A at 120 Hz and 1.973 A at 100 kHz as specified for this part.
• Thermal and Endurance: Operating temperature range −25°C to +105°C and endurance specified as 2000 hours at 105°C under rated conditions.
• Leakage and Dissipation: Leakage current specified by I ≤ 3√CV (μA) after 5 minutes at 20°C; tan δ max 0.20 at the 450 V rating (measured at 120 Hz, 20°C).
• Mechanical & Mounting: Snap-in terminal, radial can (snap-in) package, physical size φ30 × 40 mm (size dimension: L: 4 × D: 3 cm) for compact assemblies.
• Stability at Low Temperature: Impedance ratio Z(−25°C)/Z(+20°C) up to 8 for the 400–450 V range (measurement frequency 120 Hz).
• Environmental Compliance: RoHS compliant per product data.

Typical Applications

• General-purpose electronics: Specified for "General Purpose" use, providing bulk capacitance and energy storage in a wide range of electronic equipment.
• Equipment downsizing and compact systems: Ultra-smaller-sized snap-in design is suited to applications where reduced case size helps shrink overall equipment footprint.
• High-volume assembly: Tray packing and snap-in mounting support mass-production workflows and automated assembly processes.

Unique Advantages

• High-voltage capability: 450 V rating enables use in higher-voltage general-purpose circuits without additional stacking.
• Compact, snap-in construction: φ30×40L radial can with snap-in terminals reduces required PCB area while providing a robust mechanical mount.
• Designed for elevated temperature operation: Rated to 105°C with 2000-hour endurance testing at that temperature for reliable life performance in demanding thermal environments.
• Measurable ripple performance: Published ripple current values at both 120 Hz and 100 kHz allow designers to assess AC stress limits for their application.
• Controlled leakage specification: Leakage current defined by I ≤ 3√CV (μA) after initial application of rated voltage helps predict standby and no-load behavior.
• RoHS compliance: Meets RoHS requirements noted in the product data for environmental regulatory alignment.

Why Choose LGG2W391MELB40?

The LGG2W391MELB40 combines a high 450 V rating and substantial 390 µF capacitance in a compact snap-in can optimized for equipment downsizing and mass-production assembly. Its specified endurance of 2000 hours at 105°C, defined leakage and ripple current parameters, and RoHS compliance make it a practical choice for designers seeking a reliable, high-voltage aluminum electrolytic solution for general-purpose applications.

This part is well suited to projects that require a balance of voltage capability, compact mechanical footprint, and defined thermal endurance — offering clear, datasheet-backed parameters for engineering evaluation and volume deployment.

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