LGN2E391MELY40

The LGN2E391MELY40 is an aluminum electrolytic capacitor in a snap‑in terminal, radial can package designed for general‑purpose power applications. It delivers 390 µF nominal capacitance at a 250 V rating and is polarized for DC filtering and bulk energy storage.

Engineered for elevated operating temperatures, this LGN series part withstands rated ripple current for 3000 hours at 105°C. The component is RoHS‑compliant and occupies a smaller case size compared to the LGU series, helping save board area in power assemblies.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a 250 V rated voltage for mid‑voltage DC applications.
• High‑Temperature Endurance — Rated for operation to 105°C and specified to withstand 3000 hours of rated ripple current at 105°C, supporting reliable performance under elevated thermal stress.
• Ripple Current Capability — Handles 1.3 A at 120 Hz and 1.95 A at 100 kHz, enabling effective smoothing of AC ripple across a range of switching frequencies.
• Snap‑In Radial Can Package — Snap‑in terminal mounting simplifies PCB assembly for power modules and vertical mounting designs.
• Compact Footprint — Smaller case sizing relative to the LGU series helps reduce required board area for comparable capacitance.
• Operating Range & Tolerance — Rated for −40°C to +105°C with a capacitance tolerance of −20% to +20%.
• RoHS Compliance — Meets RoHS directive requirements (2011/65/EU, (EU)2015/863).

Typical Applications

• Power supplies — Bulk decoupling and smoothing on 250 V rails where 390 µF capacitance and robust ripple handling improve voltage stability.
• Industrial power electronics — Energy storage and filtering in general‑purpose industrial converters and control systems operating up to 105°C.
• Switch‑mode power supplies (SMPS) — Input/output filtering for mid‑voltage converters, leveraging the part's high ripple current capability across low and high frequencies.

Unique Advantages

• Proven high‑temperature endurance: 3000 hours at 105°C under rated ripple current reduces risk of premature degradation in hot environments.
• Wide ripple frequency coverage: Specified ripple current at both 120 Hz and 100 kHz supports designs spanning line‑frequency and high‑frequency switching domains.
• Space‑saving form factor: One rank smaller than the LGU series, enabling more compact power assemblies without reducing capacitance.
• Snap‑in mounting for secure placement: Snap‑in terminals provide a robust mechanical and electrical connection suitable for vertical PCB implementations.
• Design‑friendly tolerances and temperature range: ±20% capacitance tolerance and −40°C to +105°C operating range accommodate typical industrial and commercial power designs.
• Regulatory compliance: RoHS adherence simplifies material compliance for commercial products.

Why Choose LGN2E391MELY40?

The LGN2E391MELY40 combines mid‑voltage capability (250 V), substantial bulk capacitance (390 µF), and engineered endurance for 105°C operation—making it a practical choice for general‑purpose power filtering and energy storage in industrial and commercial designs. Its snap‑in radial can package and reduced case size versus comparable series options help designers optimize board layout without sacrificing performance.

This part is suitable for engineers and procurement teams seeking a reliable, RoHS‑compliant electrolytic capacitor that balances capacitance, ripple handling, and thermal endurance for sustained operation in demanding power applications.

Request a quote or contact sales to discuss pricing, availability, and volume options for the LGN2E391MELY40.