LKX2W271MESB40

The LKX2W271MESB40 is a snap-in terminal aluminum electrolytic capacitor from Nichicon's LKX series, designed for audio and switching power supply applications. It combines high-voltage capability with materials selected to support superior acoustic sound in audio designs.

Built for general-purpose power filtering and energy storage, this polarized capacitor delivers 270 µF at a 450 V rating with construction and endurance suited for elevated operating temperatures up to 105 °C.

Key Features

• Electrical Performance — 270 µF capacitance at a 450 V rated voltage with a tolerance of ±20% (measured at 120 Hz, 20 °C); polarized design for DC bus and power supply filtering.
• Thermal & Endurance — Rated for operation from −25 °C to +105 °C for 400–450 V parts; endurance specified as 2000 hours at 105 °C under D.C. bias plus rated ripple current.
• Ripple Current Capability — Specified ripple current of 1.23 A at 120 Hz and 1.759 A at 50 kHz, with frequency coefficients provided across standard test bands.
• Mounting & Package — Snap-in terminal, radial can (snap-in) package for secure board mounting; size listed as L: 4 × D: 3 cm for board and mechanical planning.
• Audio-Optimized Materials — Series design includes selected materials intended to achieve superior acoustic sound for audio equipment applications.
• Regulatory — RoHS compliant.

Typical Applications

• Audio Equipment Power Supplies — Provides DC bus filtering and energy storage in amplifier and audio power modules where sound quality is a consideration.
• Switching Power Supplies — Used for bulk filtering and smoothing on high-voltage DC rails in switching PSUs operating up to 450 V.
• General-Purpose Power Filtering — Suitable for general-purpose high-voltage filtering and energy storage in industrial and electronic equipment designs.

Unique Advantages

• High-Voltage Capability: 450 V rating enables use on elevated DC buses and high-voltage power rails.
• High-Temperature Endurance: 2000 hours at 105 °C under rated conditions supports sustained performance in demanding thermal environments.
• Designed for Audio: Materials selected for improved acoustic characteristics make this part well suited for audio-centric power stages.
• Robust Ripple Performance: Specified ripple currents at both low and high frequencies help ensure stable operation across switching and line-frequency conditions.
• Secure Snap-In Mounting: Snap-in radial can package provides reliable mechanical retention for PCB-mounted power components.
• RoHS Compliance: Meets RoHS directive requirements for restricted substances.

Why Choose LKX2W271MESB40?

The LKX2W271MESB40 is positioned for engineers who need a high-voltage, audio-aware electrolytic capacitor with proven endurance at elevated temperatures. Its 270 µF / 450 V rating, combined with snap-in mounting and specified ripple current performance, makes it appropriate for switching power supplies and audio power stages where both electrical performance and acoustic considerations matter.

Designed and manufactured within the Nichicon LKX series specifications, this capacitor offers a balance of voltage capability, thermal endurance, and mounting robustness for reliable long-term operation in demanding electronic power systems.

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