LGN2W391MELC40

The LGN2W391MELC40 from Nichicon is a snap‑in terminal aluminum electrolytic capacitor in the LGN series, specified for general‑purpose electronic applications. It delivers 390 µF at 450 V in a smaller-sized snap‑in can, designed for high ripple environments and long endurance at elevated temperatures.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance rated at 450 V, with tolerance ±20% (–20% to +20%) measured at 120 Hz, 20°C.
• High‑temperature Endurance — Rated for operation up to 105°C with a specified endurance of 3000 hours when subjected to D.C. bias plus rated ripple current at 105°C.
• Ripple Current Performance — Specified ripple current capability of 1.61 A at 120 Hz and 2.302 A at 100 kHz, supporting high‑ripple power circuits.
• Package & Mounting — Snap‑in radial can package for robust chassis and PCB mounting; one rank smaller case size than LGU for space‑constrained designs.
• Operating Temperature Range — –25°C to +105°C for 350–600 V range parts, matching the 450 V rating of this part.
• Leakage & Dissipation — Leakage current specified by I ≤ 3 / √C (μA) after 5 minutes at 20°C; tan δ (loss factor) max 0.20 at 120 Hz, 20°C for the 450 V rating.
• Polarized Design & Marking — Polarized aluminum electrolytic with white lettering on a black sleeve for clear polarity identification.
• RoHS Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose electronic equipment — Suited for designs requiring a 390 µF, 450 V polarized capacitor in a snap‑in package for power-related circuitry.
• High‑temperature power modules — Intended for applications operating up to 105°C where endurance under rated ripple current (3000 h at 105°C) is required.
• Space‑constrained assemblies — The one‑rank smaller case size than LGU makes this part appropriate for designs needing a compact snap‑in electrolytic at high voltage.

Unique Advantages

• Long endurance at elevated temperature: Withstands 3000 hours of rated ripple current at 105°C, providing predictable life performance under sustained thermal stress.
• High ripple capability: Specified ripple ratings of 1.61 A (120 Hz) and 2.302 A (100 kHz) support heavy AC content on DC rails.
• Compact snap‑in form factor: Snap‑in radial can construction and a smaller case size than LGU save chassis and PCB space without sacrificing rated voltage or capacitance.
• Measurable electrical limits: Clear leakage current formula (I ≤ 3/√C μA after 5 minutes at 20°C) and specified tan δ limits (0.20 max at 450 V) make electrical budgeting straightforward.
• Wide rated voltage and capacitance context: As part of the LGN series (160–600 V, 56–3300 μF range), this part fits into a broader family for design scaling and inventory consistency.
• RoHS compliant: Meets current RoHS requirements for restricted substances.

Why Choose LGN2W391MELC40?

LGN2W391MELC40 is positioned for designers who need a reliable, high‑voltage polarized electrolytic in a compact snap‑in package. Its combination of 390 µF at 450 V, defined ripple current ratings, and 3000‑hour endurance at 105°C offers a verifiable performance profile for general‑purpose power applications.

This part is suited to teams seeking predictable long‑term behavior, straightforward electrical characterization, and RoHS compliance, with the flexibility to align with other members of the LGN series for design scalability and parts commonality.

To request a quote or submit a procurement inquiry for the LGN2W391MELC40, please contact the supplier or distributor with your quantity and delivery requirements.