LGN2W391MELB50

The LGN2W391MELB50 is a 390 µF, 450 V aluminum electrolytic capacitor in a snap‑in radial can designed for general-purpose power applications. It delivers sustained performance at elevated temperatures with rated ripple endurance and a compact, snap‑in package.

This part is optimized for applications that require high-voltage capacitance with long-term stability up to 105°C and is RoHS compliant.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance at 450 V, providing bulk energy storage for high‑voltage circuits.
• High‑Temperature Endurance — Specified lifetime of 3000 hours at 105°C under DC bias plus rated ripple current, supporting long service life in elevated temperature environments.
• Ripple Current Capability — Rated ripple current of 1.61 A at 120 Hz and 2.302 A at 100 kHz, enabling robust handling of AC ripple on DC bus lines.
• Package & Mounting — Radial, snap‑in can package for secure board mounting and simplified assembly.
• Operating Range & Polarization — Polarized device with an operating temperature range of −25°C to +105°C and capacitance tolerance of ±20%.
• Regulatory — Compliant to the RoHS directive (2011/65/EU, (EU)2015/863).
• Physical Size — Compact dimensions listed as L: 5 × D: 3 cm with a maximum seated height of 1.969 inch for space‑conscious designs.

Typical Applications

• General‑purpose power filtering — Bulk smoothing and energy storage in high‑voltage DC circuits that require 390 µF at 450 V.
• High‑temperature environments — Circuits operating up to 105°C where long ripple endurance (3000 hours at 105°C) is required.
• Board‑mounted power assemblies — Snap‑in radial mounting for secure mechanical installation and straightforward PCB integration.

Unique Advantages

• Long high‑temperature reliability — Endurance specified for 3000 hours at 105°C helps ensure stable capacitance and leakage over extended elevated‑temperature operation.
• High voltage capability — 450 V rating supports demanding DC bus and power conversion applications.
• Strong ripple handling — Dual ripple current ratings (120 Hz and 100 kHz) provide clear performance expectations across common ripple frequencies.
• Compact snap‑in package — Radial, snap‑in can and a smaller case size (one rank smaller than LGU in the series) reduce board footprint without sacrificing performance.
• RoHS compliance — Meets current RoHS requirements for restricted substances, supporting regulatory alignment.

Why Choose LGN2W391MELB50?

The LGN2W391MELB50 combines high‑voltage capacitance (390 µF, 450 V) with validated endurance at elevated temperature (3000 hours at 105°C), making it a strong candidate for designers needing reliable bulk energy storage and ripple handling in compact, board‑mounted formats. Its snap‑in radial package and RoHS compliance support straightforward assembly and regulatory needs.

This capacitor is well suited to engineers specifying general‑purpose, high‑voltage smoothing and energy storage where long life at elevated temperatures and clear ripple performance metrics are important to system reliability.

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