LGU2G391MELB

The LGU2G391MELB is a Nichicon LGU series aluminum electrolytic capacitor in a snap‑in terminal (radial can) package. It provides 390 µF capacitance at a 400 V rated voltage and is designed for general‑purpose power applications that require high‑voltage capacitance with snap‑in mounting.

Engineered for sustained operation up to 105°C, the device delivers long endurance and robust ripple handling, offered in tray packing for production volumes and listed as mass production.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a 400 V rated voltage and tolerance of ±20% (–20%~20%).
• Snap‑In Radial Can — Snap‑in terminal type in a radial, can‑snap‑in package (φ30×45L) for secure PCB mounting and simplified assembly.
• High‑Temperature Endurance — Rated for 3000 hours at 105°C when exposed to D.C. bias plus rated ripple current, supporting demanding thermal environments.
• Ripple Current Capability — Low‑frequency ripple current of 1.6 A (120 Hz) and high‑frequency ripple current of 2.288 A (50 kHz), supporting dynamic power demands.
• Loss and Leakage — tanδ (loss tangent) of 0.15 measured at 20°C, 120 Hz, and a specified leakage current of 1180 µA under rated conditions.
• Operating Temperature Range — Specified for operation from –25°C to +105°C (for 315 to 450 V parts), suitable for elevated ambient temperatures.
• Compliance & Packaging — RoHS‑compliant and supplied in tray packing; product status: mass production.
• Polarized Device — Polar capacitor; designed for circuits that accommodate polarized electrolytic devices.

Typical Applications

• General Purpose Power Circuits — Use where a 390 µF, 400 V polarized capacitor with snap‑in mounting is required for power filtering and energy buffering.
• Industrial Power Modules — Suitable for high‑voltage power assemblies that demand extended endurance at elevated temperatures (3000 h at 105°C).
• High‑Voltage Filtering — Appropriate for circuits requiring specified ripple current handling at both low and high frequencies (1.6 A at 120 Hz; 2.288 A at 50 kHz).

Unique Advantages

• 400 V Rated Voltage: Enables use in higher‑voltage power designs without additional series stacking.
• Long Endurance at 105°C: 3000‑hour rating under rated ripple current and DC bias for reliable long‑term operation in hot environments.
• Dual Frequency Ripple Performance: Specified ripple current at both 120 Hz and 50 kHz supports a range of power‑conversion topologies.
• Compact Snap‑In Form Factor: φ30×45L radial can with snap‑in terminals simplifies board retention and mechanical stability in assemblies.
• Measured Loss Characteristics: tanδ of 0.15 (20°C, 120 Hz) provides a known dissipation behavior for thermal and circuit design.
• RoHS‑Compliant Production: Meets RoHS directive requirements and is offered in tray packing for production handling.

Why Choose LGU2G391MELB?

LGU2G391MELB combines a high 400 V rating with substantial capacitance (390 µF) and snap‑in packaging to address general‑purpose high‑voltage power needs where space, reliable mounting, and elevated‑temperature endurance matter. Its defined ripple current specifications and 3000‑hour endurance at 105°C give design teams predictable behavior for thermal and lifetime planning.

This part is well suited to engineers and procurement sourcing capacitors for production assemblies that require RoHS compliance, tray packing, and mass‑production availability from the Nichicon LGU series.

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