LGW2G181MELB25

The LGW2G181MELB25 is an aluminum electrolytic capacitor in a snap-in, radial can package designed for general-purpose applications. It combines a 180 µF capacitance with a 400 V rating and polarized construction to support higher-voltage circuits that require durable bulk energy storage.

Engineered for elevated ripple-handling and long-term stability, this part is specified for operation from −25 °C to 105 °C and is rated to withstand rated ripple current and DC bias for 3000 hours at 105 °C. The component is RoHS compliant and intended for designers seeking reliable, high-voltage electrolytic capacitance in a snap-in footprint.

Key Features

• High voltage, high capacitance: 180 µF capacitance at a 400 V rated voltage provides substantial energy storage for high-voltage designs.
• 105 °C endurance: Specified for continuous operation up to 105 °C with an endurance rating of 3000 hours under DC bias plus rated ripple current.
• High ripple current capability: Measured ripple current of 1.68 A at 120 Hz and 2.402 A at 50 kHz; designed to tolerate elevated ripple environments.
• Snap-in radial can package: Snap-in terminals for robust board retention and straightforward assembly in through-hole applications.
• Polarized construction: Designed as a polar capacitor for correct orientation in DC circuits.
• Tolerance and electrical characteristics: Capacitance tolerance ±20% at 120 Hz, tan δ (max.) 0.15 for the 200–400 V range, and leakage current specified as I ≤ 3√CV (μA) after 5 minutes at 20 °C.
• Operating temperature range: −25 °C to 105 °C to cover a wide set of ambient and enclosure conditions.
• RoHS compliant: Meets RoHS directive requirements.
• Compact footprint: Package dimension L: 2.5 × D: 3 cm in a radial, snap-in can.

Typical Applications

• General-purpose power filtering — Provides bulk capacitance and ripple smoothing in higher-voltage DC circuits where a 400 V rating is required.
• Energy storage for power electronics — Supports DC link and energy buffering in equipment that must tolerate elevated ripple currents and temperatures up to 105 °C.
• Industrial and commercial equipment — Suitable for general-purpose roles in industrial assemblies that require robust, snap-in through-hole capacitors compliant with RoHS.

Unique Advantages

• Long-term thermal reliability: 3000 hours endurance at 105 °C under rated ripple current offers predictable performance for designs exposed to sustained elevated temperatures.
• Frequency-resilient ripple handling: Documented ripple current values at both 120 Hz and 50 kHz demonstrate the capacitor’s capability across low and high ripple-frequency environments.
• High-voltage capability: The 400 V rating enables use in higher-voltage DC circuits without resorting to stacked or series arrangements.
• PCB-friendly snap-in mounting: Snap-in terminals provide secure mechanical retention and simplify assembly in through-hole layouts.
• Measurable loss and leakage limits: Specified tan δ and leakage current limits (I ≤ 3√CV after 5 minutes at 20 °C) allow designers to budget for loss and leakage in power budgets and thermal models.
• Regulatory compliance: RoHS compliance supports deployments where restricted substance conformity is required.

Why Choose LGW2G181MELB25?

LGW2G181MELB25 targets designs that require robust high-voltage bulk capacitance with demonstrable ripple endurance and thermal stability. Its 180 µF / 400 V rating, combined with snap-in packaging and a 105 °C endurance specification, positions it for general-purpose power-filtering and energy-buffering roles in industrial and commercial equipment.

For engineers needing predictable electrical parameters—capacitance tolerance, tan δ, leakage limits—and long-term behavior under elevated ripple and temperature, this part provides a specification-driven option with RoHS compliance and a compact radial can form factor.

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