LGW2W181MELC25

The LGW2W181MELC25 is an aluminum electrolytic, snap-in terminal capacitor from Nichicon’s LGW series. It provides 180 µF capacitance at a 450 V rating in a radial, snap-in can package designed for general-purpose applications.

This part is optimized for designs that require high ripple-current handling and extended operation at elevated temperatures, with an operating temperature range of −25°C to +105°C and endurance tested for 3000 hours at 105°C under rated ripple current conditions.

Key Features

• Capacitance & Voltage — 180 µF rated capacitance at 450 V for bulk energy storage in high-voltage circuits.
• High ripple-current capability — Rated ripple current of 1.6 A at 120 Hz (low frequency) and 2.288 A at 50 kHz (high frequency), supporting demanding AC ripple conditions.
• High-temperature endurance — Endurance specification: able to withstand 3000 hours of DC bias plus rated ripple current at 105°C per the LGW series endurance test.
• Operating temperature — Specified for −25°C to +105°C application temperature range.
• Mounting & package — Snap-in terminal radial can (φ35×25L) for secure PCB mounting in tray packing; size listed as L: 2.5 × D: 3.5 cm.
• Leakage current specification — Leakage current conforms to I ≤ 3√CV (µA) after 5 minutes at 20°C, per datasheet method.
• Tolerance & polarization — Capacitance tolerance ±20% (at 120 Hz, 20°C); polarized electrolytic construction.
• RoHS compliant — Meets RoHS directive requirements as indicated for the LGW series.

Typical Applications

• General-purpose power circuits — Suitable for general-purpose applications requiring 180 µF at 450 V and robust ripple-current handling.
• High-ripple environments — Appropriate where elevated ripple currents are present, leveraging ratings of 1.6 A (120 Hz) and 2.288 A (50 kHz).
• Elevated-temperature operation — Designed for continuous operation up to 105°C with 3000-hour endurance under rated conditions.

Unique Advantages

• Designed for sustained high ripple — Specified ripple currents at both low and high frequencies reduce the need for oversizing in ripple-heavy designs.
• Long endurance at 105°C — 3000-hour endurance under rated ripple current provides predictable life performance in hot environments.
• Compact, secure snap-in mounting — Radial snap-in can (φ35×25L) enables robust PCB mounting in tray-packed production runs.
• Clear electrical specifications — Leakage current defined by I ≤ 3√CV (µA) and standard ±20% capacitance tolerance for predictable design margins.
• Regulatory compliance — RoHS-compliant construction supports regulatory requirements for restricted substances.

Why Choose LGW2W181MELC25?

The Nichicon LGW2W181MELC25 positions itself as a reliable aluminum electrolytic solution for designs that need 180 µF at 450 V with verified high ripple-current capability and extended high-temperature endurance. Its snap-in radial can package and specified leakage/tolerance characteristics make it a practical choice for engineers specifying general-purpose capacitors with clear, verifiable electrical and thermal performance.

This capacitor is suited to applications where long-term operation at elevated temperatures and robust ripple performance are priorities, offering designers predictable behavior backed by LGW series specifications such as the 3000-hour endurance at 105°C and the leakage current formula published in the datasheet.

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