LGM2W331MELA40

The LGM2W331MELA40 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LGM series. It provides 330 µF capacitance at a 450 V rating in a compact, large‑can snap‑in package designed to support equipment downsizing.

Engineered for general‑purpose power applications, the device delivers high working voltage, 105 °C endurance, and RoHS compliance, making it suitable for designs that require a compact, high‑voltage electrolytic solution with secure snap‑in mounting.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance rated at 450 V, providing energy storage and smoothing capability at high working voltage.
• Compact Snap‑in Can Package — Radial, snap‑in terminal construction in a 25 × 40 mm (φD × L) can; one rank smaller case than the LGL series to help with equipment downsizing.
• Temperature & Endurance — Rated operating temperature range of −25 °C to +105 °C with endurance specified at 2000 hours at 105 °C under DC bias plus rated ripple current.
• Ripple Current Capability — Rated ripple current of 750 mArms at 120 Hz (105 °C); frequency coefficients in the datasheet allow scaling for other frequencies (e.g., 50 kHz coefficient 1.43).
• Leakage & Dissipation — Leakage current specified by I ≤ 3√(C·V) (µA) after 5 minutes at 20 °C; tangent of loss angle (tan δ) ≤ 0.20 at 120 Hz, 20 °C.
• Environmental Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose power systems — For circuits that require 450 V capacitance in a compact snap‑in can for energy storage and filtering.
• Equipment downsizing projects — One rank smaller case than the LGL series supports more compact power assemblies where board space is constrained.
• High‑temperature environments — Suitable for applications that need continuous operation up to 105 °C with specified endurance and recovery characteristics.

Unique Advantages

• Compact high‑voltage form factor — 25 × 40 mm can provides 330 µF at 450 V while occupying less volume than the LGL family option.
• Snap‑in mounting for secure board retention — Radial snap‑in terminals simplify PCB installation and mechanical stability in power assemblies.
• Designed for sustained high‑temperature operation — 2000 hours endurance at 105 °C under rated conditions supports reliability in demanding thermal environments.
• Frequency‑scalable ripple capability — 750 mArms rated ripple at 120 Hz with frequency coefficients provided for accurate ripple current planning at other frequencies, including high‑frequency conditions.
• Measured electrical stability — Capacitance tolerance ±20% and defined limits for tan δ and leakage current ensure predictable behavior and recovery after shelf‑life conditioning.
• RoHS compliant — Conforms to current RoHS requirements for lead‑free and restricted‑substance initiatives.

Why Choose LGM2W331MELA40?

The LGM2W331MELA40 balances high working voltage and capacitance with a reduced case size and secure snap‑in mounting, making it a practical choice for engineers optimizing power modules and equipment layouts. Its 105 °C rating with 2000‑hour endurance supports reliable operation in thermally demanding systems while maintaining predictable electrical characteristics defined in the datasheet.

This capacitor is well suited to customers and designs that require a robust, general‑purpose aluminum electrolytic at 450 V and 330 µF with a focus on compact packaging, board retention, and compliance with RoHS directives.

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