LGU2E391MELZ

The LGU2E391MELZ is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LGU series, specified for general‑purpose power applications. It delivers 390 µF nominal capacitance at a 250 V rating with a wide operating temperature range to support robust filtering and energy‑storage needs.

Designed for sustained operation up to 105°C, this radial can (snap‑in) capacitor combines high ripple‑current capability, controlled loss tangent, and RoHS compliance for use in demanding electrical environments.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a rated voltage of 250 V and capacitance tolerance of −20% to +20%.
• High‑Temperature Endurance — Specified life of 3000 hours at 105°C under rated conditions, meeting the LGU series endurance criteria.
• Ripple‑Current Performance — Low‑frequency ripple current of 1.49 A at 120 Hz and high‑frequency ripple current of 2.235 A at 50 kHz, supporting heavy ripple load conditions.
• Electrical Loss and Leakage — Tangent of loss angle (tanδ) specified at 0.15 (20°C, 120 Hz) and leakage current measured at 930 µA for stable electrical performance.
• Package & Mounting — Snap‑in terminal, radial can package (snap‑in type) supplied in tray packing for straightforward PCB assembly and handling.
• Operating Range & Compliance — Rated for −40°C to +105°C operation and compliant with RoHS directives.

Typical Applications

• Power Supplies — Bulk filtering and smoothing in power supply and converter circuits requiring 250 V capability and substantial ripple handling.
• Industrial Electronics — Energy storage and decoupling in equipment operating in elevated temperature environments up to 105°C.
• General‑Purpose Power Designs — Capacitance and reliability characteristics suited to a wide range of general‑purpose applications where long endurance and RoHS compliance are needed.

Unique Advantages

• Robust Endurance: 3000 hours rated life at 105°C provides predictable long‑term performance under sustained thermal stress.
• Strong Ripple Handling: Specified ripple currents at both low and high frequencies help reduce heating and extend capacitor life in high‑ripple circuits.
• Controlled Dielectric Loss: Low tanδ (0.15 at 20°C, 120 Hz) supports efficient operation and lower self‑heating in AC conditions.
• Low Leakage: Measured leakage current of 930 µA contributes to stable bias performance after voltage application.
• Practical Mounting Form Factor: Snap‑in radial can simplifies PCB integration and mechanical retention for through‑hole assemblies.
• Regulatory Compliance & Availability: RoHS compliant and listed as mass production status for supply continuity.

Why Choose LGU2E391MELZ?

The LGU2E391MELZ is positioned for designs that require a reliable, high‑voltage electrolytic solution with strong ripple‑current capability and long endurance at elevated temperatures. Its combination of 390 µF capacitance, 250 V rating, controlled loss tangent, and snap‑in mounting makes it suitable for engineers seeking a durable, general‑purpose capacitor for demanding power circuits.

Available from Nichicon as part of the LGU series and supplied in tray packing, this part offers a balance of electrical performance, thermal endurance, and regulatory compliance for production designs and volume use.

If you’d like a quote or more information about using the LGU2E391MELZ in your design, submit a request and our team will respond with pricing and availability details.