LGR2G331MELB50

The LGR2G331MELB50 is a snap-in terminal aluminum electrolytic capacitor designed for general-purpose high-voltage power applications. It pairs a 330 µF capacitance with a 400 V rated voltage and a snap-in radial can package to support robust board retention and high ripple handling in power systems.

This part emphasizes long-life reliability with 10,000 hours endurance at 105°C under rated ripple and DC bias, making it suited for industrial and commercial power electronics where sustained performance at elevated temperature is required.

Key Features

• Capacitance & Tolerance — 330 µF nominal capacitance with ±20% tolerance (measured at 120 Hz, 20°C).
• High Voltage Rating — 400 V rated voltage for use in high-voltage DC circuits.
• Long-Life Endurance — Designed to withstand 10,000 hours at 105°C with DC bias plus rated ripple current; capacitance change remains within ±25% after endurance testing.
• Temperature Range — Operating temperature range from −25°C to +105°C for elevated-temperature applications at 400 V rating.
• Ripple Current Performance — Rated ripple current of 1.2 A at 120 Hz and 1.716 A at 50 kHz; frequency coefficients for 400/450 V group allow scaling by operating frequency (e.g., 1.00 at 120 Hz, 1.43 at 50 kHz and above).
• Electrical Characteristics — Leakage current specified by I ≤ 3√(C·V) (µA) after 5 minutes at 20°C; tan δ maximum 0.15 for rated voltages up to 400 V.
• Package & Mounting — Radial, can-type snap-in package for secure board mounting and mechanical stability in power assemblies; physical size approximately L: 5 × D: 3 cm with a maximum seated height of 1.969 inches.
• Compliance — RoHS compliant.

Typical Applications

• Power supply smoothing and filtering — Bulk capacitance and high voltage rating support DC link and output filtering in high-voltage power supplies.
• Industrial power conversion — Long-life 105°C endurance and high ripple capability make it suitable for industrial converters and power electronics modules.
• High-voltage general-purpose circuits — Polarized, high-voltage design for general-purpose high-voltage DC applications requiring stable capacitance over time and temperature.

Unique Advantages

• Long-life assurance: 10,000 hours at 105°C under rated conditions provides predictable end-of-life behavior for maintenance planning and system reliability.
• High-voltage capability: 400 V rating enables use in elevated-voltage DC circuits without stacking multiple capacitors.
• High ripple handling: Measured ripple currents and frequency coefficients allow designers to size the capacitor accurately across a range of operating frequencies.
• Secure snap-in mounting: Radial snap-in package delivers stable mechanical retention for high-vibration or assembly-intensive environments.
• Measured electrical limits: Specified leakage current formula and tan δ limits give clear, testable acceptance criteria for incoming inspection and design validation.
• RoHS compliance: Meets RoHS directive requirements for environmental regulation adherence in commercial and industrial products.

Why Choose LGR2G331MELB50?

The LGR2G331MELB50 positions itself as a reliable, high-voltage electrolytic solution for designers needing robust bulk capacitance with long-term thermal endurance. Its combination of 330 µF at 400 V, defined ripple-current performance, and a snap-in radial package make it practical for power supply filtering and industrial power conversion where life and stability at elevated temperature matter.

Choose this part when your design requires predictable end-of-life characteristics, clear electrical acceptance criteria, and a mechanically secure capacitor package that aligns with general-purpose high-voltage applications.

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