LGU2F391MELB

The LGU2F391MELB is a snap-in terminal aluminum electrolytic capacitor from Nichicon’s LGU series, offering 390 µF nominal capacitance at a 315 V rated voltage. Designed for general-purpose power applications, it combines high-voltage capability with elevated temperature endurance for demanding board-level power filtering and energy storage tasks.

Key value is delivered through a 105°C operating range with a 3000-hour endurance at that temperature, low- and high-frequency ripple current ratings, and a compact φ30 × 35 mm snap-in can package supplied in tray packing for production use.

Key Features

• Snap-in Terminal Package Radial, can-type snap-in mounting for secure board installation and straightforward mechanical retention in panel or PCB assemblies.
• 315 V Rated Voltage High-voltage operation up to 315 V to support medium-voltage power circuits and energy storage requirements.
• 390 µF Capacitance (±20%) Nominal capacitance with industry-standard ±20% tolerance measured at 120 Hz, 20°C.
• 105°C Endurance — 3000 hours Designed to withstand 3000 hours at 105°C with rated ripple current applied, meeting endurance criteria for prolonged high-temperature operation.
• High Ripple Current Capability Low-frequency ripple current 1.47 A (120 Hz) and high-frequency ripple current 2.102 A (50 kHz) for effective smoothing across a wide frequency range.
• Leakage and Dissipation Characteristics Leakage current specified at 1050 µA and tangent of loss angle (tan δ) of 0.15 measured at 20°C, 120 Hz—parameters useful for thermal and loss budgeting.
• Compact Mechanical Size Physical dimensions φ30 × 35 mm provide a compact footprint for high-voltage capacitors in space-constrained assemblies.
• RoHS Compliant & Tray Packed RoHS-compliant construction and tray packing suitable for production handling and automated assembly processes.

Typical Applications

• General-purpose power electronics — Suitable for general-purpose power circuits that require a 315 V, 390 µF snap-in capacitor with high-temperature endurance.
• Power supply filtering — Used where DC-link smoothing and ripple handling at both low and high frequencies are needed, leveraging specified ripple current ratings.
• Industrial equipment — Applicable in industrial power modules operating up to 105°C and requiring long-life performance (3000 hours at 105°C).

Unique Advantages

• Long high-temperature life: 3000-hour endurance at 105°C provides predictable aging and reliability for sustained high-temperature operation.
• High-voltage capability: 315 V rating enables use in medium-voltage power circuits without series stacking of lower-voltage parts.
• Wide ripple frequency support: Specified ripple currents at 120 Hz and 50 kHz support effective filtering across low and high frequency components.
• Measured loss and leakage data: tan δ = 0.15 (120 Hz, 20°C) and leakage current = 1050 µA provide quantifiable inputs for thermal and leakage budgeting in designs.
• Production-friendly packaging: Tray packing simplifies handling and integration into automated assembly workflows.
• RoHS compliance: Environmentally compliant construction for markets requiring restricted substance adherence.

Why Choose LGU2F391MELB?

The LGU2F391MELB positions itself as a robust snap-in aluminum electrolytic solution for engineers who need a 315 V, 390 µF capacitor with proven high-temperature endurance and measurable ripple-handling capability. Its combination of a compact φ30 × 35 mm can, snap-in mounting, and documented electrical characteristics makes it suitable for designers balancing voltage, capacitance, and thermal reliability in general-purpose power designs.

Ideal for procurement and design teams targeting reliable, production-ready capacitors, this part offers clear electrical and mechanical specifications to simplify selection, thermal modeling, and production planning while maintaining RoHS compliance.

Request a quote or submit an inquiry for pricing, availability, and lead-time information to evaluate LGU2F391MELB for your next design.