LGX2G391MELA50

The LGX2G391MELA50 is a snap-in terminal aluminum electrolytic capacitor from Nichicon’s LGX series designed for power conversion circuits. It delivers 390 µF at 400 V in a smaller-sized radial can with snap-in mounting and is intended for rectifier sections of general inverters and switching power supplies.

Engineered for long-life operation, this capacitor is specified to withstand rated ripple current for 5000 hours at 105°C and is RoHS compliant, making it suitable for designs that require extended endurance at elevated temperatures.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance at 400 V provides bulk energy storage for power-supply and rectifier circuits.
• High Temperature Long Life — Specified endurance of 5000 hours at 105°C with rated ripple current applied; capacitance change is within ±20% after the endurance test per the series specification.
• Ripple Current Capability — Rated ripple current of 1.44 A at 120 Hz and 2.059 A at 50 kHz, supporting common power-conversion switching frequencies and rectifier loads.
• Operating Temperature Range — Usable from −25°C to +105°C to accommodate elevated operating environments.
• Snap-In Radial Package — Snap-in terminal, radial can construction for secure board mounting in power assemblies.
• Leakage Current Specification — Leakage current defined by I ≤ 3√CV (µA) after 5 minutes at 20°C, per series datasheet guidance.
• Polarized Component — Designed as a polarized electrolytic capacitor for DC filtering and bulk storage applications.
• RoHS Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Inverter Rectifier Circuits — Bulk smoothing and energy storage on rectifier outputs for general inverter systems.
• Switching Power Supplies — DC link and output filtering where elevated ripple endurance and high voltage are required.
• Industrial Power Electronics — Use in industrial converters and power modules that need long-term operation at up to 105°C.

Unique Advantages

• Long-Life Endurance: 5000 hours at 105°C under rated ripple current provides predictable aging and maintenance planning for power systems.
• High Voltage Capability: 400 V rating supports high-voltage DC link and rectifier applications without series stacking.
• Compact Snap-In Form Factor: Smaller-sized radial can with snap-in terminals simplifies PCB mounting and mechanical retention in power assemblies.
• Measured Ripple Performance: Explicit ripple-current ratings at 120 Hz and 50 kHz allow designers to match capacitor selection to switching frequencies and expected ripple loads.
• Clear Endurance Criteria: Endurance and shelf-life limits (capacitance, tan δ, leakage) are specified in the series datasheet to guide reliability assessments.
• Regulatory Compliance: RoHS compliance supports restricted-substance requirements for commercial and industrial projects.

Why Choose LGX2G391MELA50?

The LGX2G391MELA50 positions itself as a durable, high-voltage bulk capacitor for power-conversion designs that require long operational life at elevated temperature. Its combination of 390 µF at 400 V, explicit ripple-current ratings, and a 5000-hour endurance rating at 105°C makes it suitable for rectifier and DC-link duties in inverters and switching supplies.

Designed for engineers and procurement teams focused on robust, verifiable performance, this Nichicon LGX series part delivers documented endurance, leakage, and loss characteristics to support system-level reliability and lifecycle planning.

Request a quote or submit an inquiry for pricing and availability to evaluate LGX2G391MELA50 for your next power-electronics design.