LGU2C391MELZ

The LGU2C391MELZ is a snap-in terminal aluminum electrolytic capacitor from Nichicon's LGU series. It delivers 390 µF capacitance at a 160 V rating and is designed for general-purpose power applications that require robust ripple handling and extended endurance.

Engineered for high-temperature operation, this capacitor supports continuous use up to 105°C with endurance validated to 3000 hours under rated ripple and temperature conditions, making it suitable for demanding power filtering and energy-storage tasks in industrial and commercial equipment.

Key Features

• Capacitance and Tolerance — 390 µF nominal capacitance with tolerance of −20% to +20% (measured at 120 Hz, 20°C).
• Rated Voltage — 160 V DC rating for medium-voltage power applications.
• Ripple Current Performance — Low-frequency ripple current 1.30 A (120 Hz) and high-frequency ripple current 1.95 A (specified at higher frequencies), enabling effective smoothing under AC ripple conditions.
• Loss Tangent (tan δ) — tan δ = 0.15 (measured at 20°C, 120 Hz), indicating the specified dissipation factor for this voltage class.
• Leakage Current — Typical leakage current specified at 740 µA (after rated voltage applied at 20°C, measurement conditions per datasheet).
• Thermal and Endurance — Operational temperature range −40°C to +105°C with endurance of 3000 hours at 105°C under rated ripple and DC bias conditions.
• Polarized Snap-In Package — Snap-in terminal radial can (snap-in) construction for secure board mounting and mechanical stability; size indicated as φ22×25L. Tray packing is provided for production handling.
• RoHS Compliant — Manufactured in compliance with RoHS directives.

Typical Applications

• Power supply filtering — Bulk smoothing and decoupling in mid-voltage power supplies where 160 V rating and substantial ripple current capability are required.
• Industrial power modules — Energy storage and ripple attenuation in industrial converters and power-conditioning equipment operating up to 105°C.
• Inverter and drive support — DC-link and intermediate filtering in inverter systems that demand sustained ripple endurance and thermal stability.

Unique Advantages

• High-temperature endurance: Rated for 3000 hours at 105°C under rated ripple conditions, reducing the need for frequent replacements in high-heat environments.
• Strong ripple handling: Specified ripple currents at both low and high frequencies enable cleaner DC outputs across a range of switching and line frequencies.
• Robust voltage margin: 160 V rating supports mid-voltage topologies common in industrial and commercial power systems.
• Snap-in mounting reliability: Snap-in terminal design offers secure mechanical retention for heavy-current board-level applications.
• Clear electrical characterization: Specified tan δ and leakage current values (measured at standard test conditions) aid in precise circuit design and thermal budgeting.
• Regulatory compliance: RoHS compliance aligns the component with modern environmental requirements for electronic assemblies.

Why Choose LGU2C391MELZ?

The LGU2C391MELZ positions itself as a reliable, mid-voltage aluminum electrolytic solution for designers needing a combination of high ripple capability, validated high-temperature endurance, and a snap-in package for secure board retention. Its electrical specifications—390 µF at 160 V, defined tan δ, and leakage current—provide concrete parameters that simplify selection and integration into power supply, inverter, and industrial power modules.

This part is well suited to engineers and procurement teams focused on durable, production-ready capacitors for demanding thermal and ripple environments. Backed by Nichicon's LGU series specifications and RoHS compliance, the LGU2C391MELZ supports long-term system robustness and predictable performance under rated conditions.

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