LGX2G391MELC30

The LGX2G391MELC30 is a Nichicon LGX series snap-in aluminum electrolytic capacitor specified for 400 V, 390 µF applications. It is a smaller-sized, snap-in terminal type capacitor designed for power electronics requiring sustained performance at elevated temperatures.

Engineered for rectifier circuits in general inverters and switching power supplies, this part offers long-life assurance with defined endurance at 105°C and RoHS compliance for regulatory compatibility.

Key Features

• Electrical Rating — 390 µF capacitance at a 400 V rated voltage with ±20% tolerance, suitable for high-voltage power circuits.
• High-Temperature Endurance — Rated operating temperature from -25°C to 105°C with a lifetime assurance of 5000 hours at 105°C under rated ripple and DC bias conditions.
• Ripple Current Capability — Rated ripple handling of 1.52 A at 120 Hz and 2.174 A at 50 kHz, supporting typical rectifier and switching conditions.
• Snap-In Package — Radial can with snap-in mounting for secure board retention and simplified assembly in power-supply layouts; physical size L: 3 × D: 3.5 cm.
• Reliability Characteristics — Endurance criteria: capacitance change within ±20% and leakage current not exceeding initial specified value after endurance testing; shelf-life recovery defined after storage at 105°C for 1000 hours.
• Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Inverter Rectifier Circuits — Provides bulk and smoothing capacitance for rectifier stages in general inverter systems, benefiting from the 400 V rating and high-temperature endurance.
• Switching Power Supplies — Used for DC link and output filtering where sustained ripple handling and long life at elevated temperatures are required.
• General Purpose Power Systems — Applicable where polarized aluminum electrolytic capacitors are needed for energy storage and decoupling in industrial power electronics.

Unique Advantages

• Long-life performance at 105°C: Engineered to withstand 5000 hours of rated ripple current at 105°C, providing predictable end-of-life behavior for thermal-stressed designs.
• High-voltage capability: 400 V rating enables use in higher-voltage rails and DC link applications without additional derating.
• Measured ripple specifications: Published ripple current values at 120 Hz and 50 kHz aid in accurate thermal and lifetime budgeting for power converters.
• Compact snap-in form factor: Smaller-sized radial can with snap-in terminals simplifies mounting and saves PCB area compared to larger power capacitors.
• RoHS-compliant material set: Meets regulatory requirements for restricted substances.

Why Choose LGX2G391MELC30?

LGX2G391MELC30 targets power-electronics designs that require a combination of high-voltage rating, significant capacitance, and verified long-term performance at elevated temperatures. Its snap-in package and defined ripple current specifications make it suitable for rectifier and switch-mode power topologies where thermal resilience and predictable endurance are important design considerations.

As a member of Nichicon's LGX series, this capacitor delivers datasheet-backed endurance and electrical characteristics that help engineers plan lifetime and thermal management for industrial power conversion and general-purpose power systems.

Request a quote or submit an inquiry to check availability and obtain pricing for LGX2G391MELC30.