LGW2G181MELZ40

The LGW2G181MELZ40 from Nichicon is a snap‑in terminal aluminum electrolytic capacitor designed for general‑purpose applications that require high voltage and high ripple‑current handling. It delivers 180 µF at 400 V with a polarized can‑style snap‑in package and is designed for continuous operation up to 105°C.

Key value propositions include high ripple current capability, extended endurance at elevated temperature, and a compact φ22 × 40 mm can footprint for board‑mounted power assemblies.

Key Features

• Capacitance & Voltage — 180 µF rated capacitance at 400 V with ±20% tolerance, suitable for high‑voltage, polarized capacitor requirements.
• High Ripple Current — Rated ripple current: 1.43 A at 120 Hz (low frequency) and 2.045 A at 50 kHz (high frequency), supporting applications with significant AC ripple demands.
• High‑Temperature Endurance — Specified 3000 hours lifetime at 105°C under rated ripple current, providing extended life in elevated temperature environments.
• Low Loss & Leakage — Maximum tanδ of 0.15 (measured at 20°C, 120 Hz) and leakage current of 800 µA, supporting stable performance and low standby current.
• Robust Package & Mounting — Snap‑in terminal, radial can package (φ22 × 40 mm / L: 4 × D: 2.2 cm) for secure board mounting and mechanical stability; supplied in trays for production use.
• Operating Range & Compliance — Operating temperature range −25°C to +105°C and RoHS compliance for environmental conformity.

Typical Applications

• General‑Purpose Power Electronics — Use where a 400 V polarized capacitor with high ripple current and 105°C endurance is required for power filtering and energy storage.
• Industrial Equipment — Suitable for board‑mounted systems that need a compact, snap‑in aluminum electrolytic with long life at elevated temperatures.
• Power Supply Filtering — Applied in circuits that demand sustained ripple handling (1.43 A @120 Hz / 2.045 A @50 kHz) alongside 180 µF capacitance for smoothing and decoupling.

Unique Advantages

• Measured High Ripple Capability: Specified ripple currents at both low and high frequencies (1.43 A @120 Hz, 2.045 A @50 kHz) allow designers to match performance to switching and linear environments.
• Extended High‑Temperature Life: 3000 hours endurance at 105°C under rated conditions reduces the need for early replacements in hot operating environments.
• Stable Electrical Characteristics: Low tanδ (0.15 at 20°C, 120 Hz) and controlled leakage current (800 µA) support predictable behavior in long‑running systems.
• Board‑Ready Snap‑In Form Factor: φ22 × 40 mm radial can with snap‑in terminals simplifies mounting for through‑hole assemblies and mass production (tray packing).
• Regulatory Compliance: RoHS‑compliant construction supports deployment in regulated markets.

Why Choose LGW2G181MELZ40?

The LGW2G181MELZ40 is positioned for engineers who need a robust, high‑voltage electrolytic capacitor that balances capacitance, ripple‑handling, and long‑term thermal endurance. Its snap‑in radial can and tray packing make it practical for production board assembly while the 3000‑hour rating at 105°C provides confidence in high‑temperature applications.

This part is well suited for designs where a 400 V polarized capacitor with verified ripple current ratings, low loss factor, and RoHS compliance are required. Choosing the LGW2G181MELZ40 delivers a predictable, production‑ready capacitor from the Nichicon LGW series backed by documented endurance and electrical characteristics.

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