LGW2W181MELA40

The LGW2W181MELA40 from Nichicon is a snap‑in terminal aluminum electrolytic capacitor rated 450 V and 180 µF. It is designed for general‑purpose power applications that require high ripple current handling and elevated temperature endurance.

This part delivers high ripple current capability with endurance for 3000 hours under rated ripple current at 105°C, making it suitable where long‑term stability under thermal and electrical stress is required.

Key Features

• Rated Capacitance & Voltage: 180 µF nominal capacitance at a rated voltage of 450 V, suitable for high‑voltage DC applications within the LGW series range.
• High Ripple Current: Specified ripple current performance of 1.35 A at 120 Hz and 1.931 A at 50 kHz for this part, enabling effective AC ripple handling in power circuits.
• 105°C Endurance: Withstands 3000 hours of application of rated ripple current at 105°C per product specification, supporting sustained operation in elevated temperature environments.
• Snap‑in Terminal Package: Radial can with snap‑in terminals for secure board mounting and robust mechanical retention in high‑power assemblies.
• Operating Temperature Range: −25°C to +105°C rating for this 400–450 V variant, providing reliable performance across a wide operating temperature span.
• Compact Metal Can Dimensions: 25 mm diameter × 40 mm length (φD × L), offering a high energy density footprint for power system layouts.
• RoHS Compliant: Conforms to RoHS directive (2011/65/EU,(EU)2015/863), meeting environmental regulatory requirements.

Typical Applications

• High‑voltage power supplies: Used for DC bus smoothing and energy buffering where a 450 V rated capacitor and high ripple current capability are required.
• Industrial power equipment: Suitable for general‑purpose power electronics in industrial systems that demand thermal endurance and steady capacitance under ripple load.
• Power conversion modules: Employed in circuits needing compact high‑voltage capacitance with snap‑in mounting for secure board integration.

Unique Advantages

• Durable high‑temperature performance: Rated to withstand 3000 hours at 105°C with applied ripple current, helping maintain capacitance and leakage stability over long service intervals.
• High ripple handling: Measured ripple currents at 120 Hz and 50 kHz demonstrate the part’s capability to manage AC stress across common power frequencies.
• Secure snap‑in mounting: Snap‑in terminals provide reliable mechanical retention for high‑power boards and simplify assembly.
• High voltage rating: 450 V rating supports use in elevated voltage DC applications without stepping up component count.
• Regulatory compliance: RoHS compliance reduces environmental risk and streamlines regulatory acceptance in many regions.

Why Choose LGW2W181MELA40?

LGW2W181MELA40 combines a high 450 V rating with a 180 µF capacitance in a compact snap‑in aluminum can, offering a balanced solution for designers needing high ripple current capability and long‑term thermal endurance. Its 3000‑hour rating at 105°C under rated ripple current demonstrates suitability for demanding, sustained power applications.

This part is a practical choice for engineers and procurement teams specifying general‑purpose, high‑voltage capacitors where verified endurance, compact dimensions (25 mm × 40 mm), and secure snap‑in mounting are important. Backed by Nichicon documentation for the LGW series, it supports reliable integration into high‑voltage power designs.

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