LGX2E391MELA30

The LGX2E391MELA30 is a snap-in terminal aluminum electrolytic capacitor designed for high-temperature, long-life power applications. It delivers 390 µF at a 250 V rating in a compact radial can snap-in package suited to space-constrained power electronics.

Engineered for rectifier circuits in general inverters and switching power supplies, this RoHS-compliant capacitor offers sustained performance at elevated temperatures with a guaranteed 5000 hours of rated ripple current endurance at 105°C.

Key Features

• Capacitance & Voltage: 390 µF nominal capacitance with a 250 V rated voltage and ±20% tolerance.
• Snap-in Radial Package: Radial, can-type snap-in mounting for secure PCB retention in high-current power assemblies; nominal size L: 3 × D: 2.5 cm for compact layouts.
• High-Temperature Long Life: Specified endurance of 5000 hours at 105°C when subjected to D.C. bias plus rated ripple current; capacitance change is within ±20% after the test.
• Operating Temperature Range: −25°C to +105°C to cover a wide range of industrial power environments.
• Ripple Current Capability: Rated ripple current of 1.43 A at 120 Hz and 2.145 A at 50 kHz to support power filtering and smoothing in switching converters and rectifier circuits.
• Leakage Current Specification: Series leakage guideline I ≤ 3√CV (µA) measured after 5 minutes at 20°C, supporting predictable leakage behavior for design calculations.
• Endurance and Stability: After 5000 hours at 105°C the part meets series endurance criteria for capacitance, dissipation factor (tan δ ≤ 200% of initial), and leakage current (≤ initial specified value).
• Compliance: RoHS directive compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Inverter Power Stages: Used in rectifier and DC link circuits to provide bulk energy storage and smoothing in general inverter systems.
• Switching Power Supplies: Serves as output and smoothing capacitors where high ripple handling and elevated temperature endurance are required.
• Industrial Power Electronics: Suitable for filter and energy storage roles in industrial converters that operate at elevated temperatures and require long-life components.

Unique Advantages

• Long Life at Elevated Temperature: 5000-hour endurance at 105°C provides predictable aging and maintenance planning for power systems.
• High Ripple Handling: Established ripple current ratings at 120 Hz and 50 kHz support use in both low- and high-frequency converter stages.
• Compact Snap-In Format: Radial snap-in can and smaller-sized footprint (L: 3 × D: 2.5 cm) enable dense board layouts without sacrificing power capability.
• Designable Leakage Specification: Leakage current defined by I ≤ 3√CV (µA) after initial charge allows precise margining in leakage-sensitive designs.
• Wide Operating Range: −25°C to +105°C operation fits many industrial and power-electronics environments.
• RoHS Compliance: Meets regulatory material restrictions for modern electronics manufacturing.

Why Choose LGX2E391MELA30?

The LGX2E391MELA30 combines a high-voltage 250 V rating and 390 µF capacitance with a snap-in radial package optimized for power-electronics applications that demand long-term stability at elevated temperatures. Its verified 5000-hour endurance at 105°C, defined leakage behavior, and rated ripple currents make it a practical choice for engineers specifying reliable bulk and smoothing capacitors in inverters, switching supplies, and industrial converters.

This capacitor is well suited to system designs where predictable aging, compact board footprint, and RoHS compliance are required. It provides a clear specification set to support qualification, BOM selection, and long-term operational planning.

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