LGW2W181MELZ45

The LGW2W181MELZ45 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LGW series. It delivers 180 µF capacitance at a 450 V rating in a compact 22 mm × 45 mm radial, can‑style package designed for general‑purpose applications.

Designed for high ripple current operation and long endurance, this polarized capacitor is specified to withstand 3000 hours of rated ripple current at 105°C and is RoHS compliant.

Key Features

• Electrical Performance — 180 µF nominal capacitance with ±20% tolerance at 120 Hz, 20°C; rated for 450 V DC.
• High Ripple Endurance — Engineered for high ripple current operation and specified to endure 3000 hours of rated ripple current at 105°C.
• Ripple Current Specifications — Ripple current values: 1.35 A at 120 Hz (low frequency) and 1.931 A at 50 kHz (high frequency) for this part.
• Thermal Range & Reliability — Operating temperature range of −25°C to +105°C with endurance and shelf‑life performance characterized in the LGW series specifications.
• Package & Mounting — Snap‑in radial can package (22 mm diameter × 45 mm length) for secure board mounting and mechanical stability.
• Compliance & Marking — RoHS compliant with white lettering on a black sleeve for easy identification.

Typical Applications

• General‑Purpose Power Circuits — Provides high‑voltage energy storage and ripple handling where a 450 V, 180 µF electrolytic capacitor is required.
• High‑Ripple Environments — Intended for designs that require sustained ripple tolerance, backed by a 3000‑hour ripple endurance at 105°C.
• Board‑Mounted Energy Storage — Snap‑in radial package enables reliable PCB mounting for compact power assemblies.

Unique Advantages

• High Voltage Capability: 450 V rating supports higher DC bus designs without series stacking.
• Proven Ripple Endurance: Specified to withstand 3000 hours of rated ripple current at 105°C, reducing the need for frequent replacements in high‑stress environments.
• Frequency‑Characterized Ripple Data: Published ripple current values at 120 Hz and 50 kHz allow designers to evaluate performance across common operating frequencies.
• Compact Snap‑In Form Factor: 22 mm × 45 mm radial can with snap‑in terminals provides a balance of capacitance and space efficiency for chassis and PCB assemblies.
• Temperature‑Rated Reliability: Specified operating range to 105°C with endurance and shelf‑life limits defined in the LGW series datasheet.
• RoHS Compliant: Meets EU RoHS requirements for lead‑restricted applications.

Why Choose LGW2W181MELZ45?

LGW2W181MELZ45 is positioned for designs that require a robust, high‑voltage electrolytic capacitor with verified ripple endurance and compact snap‑in mounting. Its 450 V rating, 180 µF capacitance, and specified ripple current figures make it a suitable component where sustained ripple handling and thermal endurance to 105°C are important design considerations.

This part is appropriate for engineers and purchasers seeking a RoHS‑compliant, board‑mountable aluminum electrolytic solution with clear endurance and performance data documented by the LGW series specifications.

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