LKX2W181MESA40

The LKX2W181MESA40 is a snap‑in aluminum electrolytic capacitor from Nichicon’s LKX series designed for general purpose use in audio equipment and switching power supplies. It combines a high 450 V rated voltage with a 180 µF capacitance in a radial, snap‑in can suitable for power filtering and bulk energy storage on high‑voltage rails.

Key value propositions include high ripple handling, a wide operating temperature range, and a 2000‑hour endurance at 105 °C—making it appropriate for applications that require stable performance under elevated temperatures and DC bias conditions.

Key Features

• Electrolytic core & mounting: Aluminum electrolytic, polarized design with a snap‑in terminal for secure, vertical PCB mounting in radial can format.
• Rated capacitance and tolerance: 180 µF nominal capacitance with ±20% tolerance (measured at 120 Hz, 20 °C).
• High voltage rating: 450 V rated voltage for high‑voltage power rails and bulk filtering.
• Loss characteristic: tan δ = 0.2 measured at 20 °C and 120 Hz, providing a defined loss profile for AC performance planning.
• Ripple current capability: 870 mA at 120 Hz (low frequency) and 1.244 A at 50 kHz (high frequency), supporting both mains‑frequency and high‑frequency ripple conditions.
• Leakage current: 850 µA specified leakage current after voltage application at 20 °C.
• Thermal and endurance rating: Operating temperature range −25 °C to +105 °C with 2000 hours endurance at 105 °C under rated ripple and DC bias.
• Package and size: φ25 × 40 mm (diameter × length) can; tray packing and mass production availability.
• Environmental compliance: RoHS‑compliant construction.

Typical Applications

• Audio equipment: Bulk and smoothing capacitance for power supplies in audio systems, leveraging the LKX series’ selection of materials for sound‑sensitive designs.
• Switching power supplies: High‑voltage bulk filtering and energy storage on 450 V rails where high ripple current capability and elevated temperature endurance are required.
• General power filtering: Decoupling and smoothing on high‑voltage industrial and commercial power circuits that need compact snap‑in mounting and defined leakage/tan δ characteristics.

Unique Advantages

• High voltage capability: 450 V rating enables use on elevated DC rails without series stacking.
• Defined ripple performance: Specified ripple currents at both 120 Hz and 50 kHz allow designers to size capacitors for both low‑frequency and high‑frequency filtering requirements.
• Elevated temperature endurance: 2000 hours at 105 °C supports reliable operation in hotter environments and under sustained load.
• Compact snap‑in packaging: φ25 × 40 mm snap‑in can simplifies board layout and mechanical retention for vertical mounting.
• Measured electrical parameters: Specified tan δ and leakage current provide predictable behavior for thermal and loss calculations in power designs.
• RoHS compliant and mass production ready: Environmentally compliant construction and production status suitable for volume deployment.

Why Choose LKX2W181MESA40?

The LKX2W181MESA40 is positioned for designs that require a reliable, high‑voltage electrolytic solution with verified ripple handling and thermal endurance. Its combination of 180 µF capacitance, 450 V rating, snap‑in package, and 2000‑hour life at 105 °C makes it suitable for audio power supplies, switching converters, and other high‑voltage filtering roles.

Designed and manufactured by Nichicon and supplied in tray packing for production use, this part delivers predictable electrical characteristics (tan δ, leakage, ripple current) so engineers can plan for thermal, loss, and lifetime behavior in their systems.

Request a quote or submit an inquiry for LKX2W181MESA40 to receive pricing, availability, and technical support for your project needs.