LGU2W391MELC

The LGU2W391MELC is a snap-in terminal aluminum electrolytic capacitor from Nichicon's LGU series. It delivers a 390 µF capacitance at a 450 V rating in a radial, snap-in can designed for general purpose applications.

Key value comes from its high-voltage capability, engineered ripple-current performance at both low and high frequencies, and extended endurance at elevated temperature — attributes suited to general-purpose power assemblies and production environments.

Key Features

• Electrical Characteristics — 390 µF capacitance with tolerance of -20% to +20%, polarized, rated for 450 V. Specified tangent of loss angle (tan δ) is 0.2 measured at 20°C, 120 Hz, and leakage current is specified at 1250 µA.
• Ripple Current & Frequency Performance — Low-frequency ripple current of 1.5 A at 120 Hz and high-frequency ripple current of 2.145 A at 50 kHz, supporting a range of power-frequency and switching-frequency conditions.
• Endurance at Elevated Temperature — Designed to withstand 3000 hours of rated ripple current at 105°C, meeting the LGU series endurance specification after D.C. bias plus rated ripple current.
• Operating Temperature Range — Rated for operation from -25°C to +105°C.
• Package & Mounting — Radial, snap-in terminal can with dimensions φ35 × 40L (mm). Supplied in tray packing for production handling; the part is in mass production.
• Environmental Compliance — RoHS compliant.

Typical Applications

• General-purpose power assemblies — Suitable where a 450 V, 390 µF snap-in electrolytic capacitor is required for general-purpose DC link or bulk capacitance needs.
• High-temperature power environments — Applicable in designs that require sustained operation up to 105°C with long-duration ripple-current endurance.
• Production-oriented assemblies — Snap-in mounting and tray packing support efficient PCB assembly and handling in production workflows.

Unique Advantages

• High-voltage capability: 450 V rating enables use in higher-voltage general-purpose applications without additional series stacking.
• Strong ripple performance: Specified ripple currents at both 120 Hz and 50 kHz help address a range of power frequency and switching scenarios.
• Extended high-temperature endurance: 3000 hours at 105°C under rated ripple current provides a predictable durability metric for thermal-stressed designs.
• Production-ready packaging: Tray packing and snap-in termination simplify handling and assembly for medium- to high-volume manufacturing.
• Verified loss and leakage specs: Defined tan δ and leakage current give clear electrical expectations for design margining and qualification.
• RoHS compliant: Meets environmental directive requirements for restricted substances.

Why Choose LGU2W391MELC?

The LGU2W391MELC combines a 450 V rating with 390 µF capacitance in a snap-in, production-friendly package engineered for general-purpose power applications. Its specified ripple-current ratings at low and high frequencies, plus a 3000-hour endurance at 105°C, deliver measurable performance for designs that must endure elevated temperatures and continuous ripple stress.

This part is suited to designers and procurement teams specifying reliable, RoHS-compliant aluminum electrolytic capacitors for general-purpose power assemblies where high voltage capability, defined loss/leakage characteristics, and production handling considerations matter.

Request a quote or submit an inquiry to receive pricing, availability, and additional ordering information for the LGU2W391MELC.