LGN2V391MELA45

The LGN2V391MELA45 is a snap‑in terminal aluminum electrolytic capacitor in the Nichicon LGN series, designed for general purpose power applications. It delivers 390 µF at 350 V with a compact φ25 × 45 mm can and snap‑in mounting for robust board retention and high ripple handling.

Engineered for long endurance and elevated operating temperatures, this part supports a 3000‑hour rated life at 105°C and provides defined ripple and leakage characteristics for reliable performance in power conversion and filtering applications.

Key Features

• Capacitance and Voltage — 390 µF rated capacitance at 350 V, ±20% tolerance for bulk energy storage and smoothing in high‑voltage circuits.
• High‑Temperature Endurance — Rated life of 3000 hours at 105°C; designed to withstand prolonged operation at elevated temperatures while maintaining specified characteristics.
• Ripple Performance — Low‑frequency ripple current of 1.3 A (120 Hz) and high‑frequency ripple current of 1.859 A (100 kHz) to support AC ripple handling across a range of switching frequencies.
• Controlled Loss and Leakage — Tangent of loss angle (tan δ) max 0.15 at 20°C, 120 Hz; leakage current specified at 1100 µA to help predict standby and steady‑state losses.
• Snap‑In Mounting — Radial can, snap‑in type package for secure PCB retention and straightforward assembly in power chassis and board layouts.
• Operating Range — Rated for operation from −25°C to +105°C (per series specification for 350 V ratings), matching the endurance specification for high‑temperature applications.
• RoHS Compliant — Meets RoHS requirements for environmental compliance.

Typical Applications

• Power supply filtering: Bulk smoothing and ripple reduction in high‑voltage power supplies, leveraging the 390 µF capacitance and specified ripple current capability.
• Power conversion and inverters: Energy buffering and DC link smoothing where sustained ripple handling and 105°C endurance are required.
• Industrial power electronics: General purpose use in industrial systems that demand long life at elevated temperatures and secure snap‑in mounting.

Unique Advantages

• Long high‑temperature life: 3000 hours at 105°C ensures predictable aging and stability for designs exposed to sustained thermal stress.
• Defined ripple ratings: Published low‑ and high‑frequency ripple currents (1.3 A at 120 Hz, 1.859 A at 100 kHz) let designers size capacitors against actual switching and mains ripple profiles.
• Predictable electrical behavior: Maximum tan δ of 0.15 (20°C, 120 Hz) and specified leakage current provide measurable parameters for efficiency and thermal budgeting.
• Robust mechanical mounting: Snap‑in radial can package provides secure PCB retention suited to board and chassis installations.
• Compact footprint: φ25 × 45 mm size delivers high voltage and capacitance in a relatively small package for space‑constrained power designs.

Why Choose LGN2V391MELA45?

The LGN2V391MELA45 positions itself as a reliable, general purpose high‑voltage electrolytic solution where sustained ripple handling and high‑temperature endurance matter. With explicit ripple current ratings, controlled dissipation characteristics, and a 3000‑hour life at 105°C, it supports predictable performance in demanding power and industrial applications.

This part is suited for engineers and procurement teams specifying capacitors for power supplies, converters, and other high‑voltage circuits that require measured electrical parameters, secure snap‑in mounting, and RoHS compliance.

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