LKX2W221MESA45

The LKX2W221MESA45 from Nichicon is a snap-in terminal aluminum electrolytic capacitor in the LKX series, specified at 220 µF and 450 V. It is designed for audio equipment and switching power supply applications where a high-voltage, snap-in radial can is required.

Built from selected materials to support superior acoustic sound and provided as a 105°C standard series, this polarized capacitor combines high-voltage capability with snap-in mounting and RoHS compliance for general-purpose power filtering and energy storage in electronic systems.

Key Features

• Electrical Rating — 220 µF capacitance with a 450 V rated voltage and ±20% tolerance, suitable for high-voltage filtering and bulk energy storage.
• High-temperature endurance — Rated for operation from −25°C to 105°C with an endurance specification of 2000 hours at 105°C under DC bias plus rated ripple current.
• Ripple current capability — Specified ripple currents include 1.05 A at 120 Hz and 1.502 A at 50 kHz, supporting both low-frequency and higher-frequency ripple environments.
• Package and mounting — Radial, snap-in can (snap-in terminal type) for secure board retention and straightforward assembly into power supply and amplifier chassis.
• Size — Compact dimensions of L: 4.5 × D: 2.5 cm allow for dense packing in power supply and audio circuits.
• Polarized design — Polarized aluminum electrolytic construction for DC power applications.
• Environmental compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Audio equipment — Bulk filtering and power decoupling in amplifier and preamplifier power supplies where selected materials contribute to improved acoustic characteristics.
• Switching power supplies — High-voltage bulk and smoothing capacitor for switch-mode power supplies up to the 450 V rating.
• General-purpose power systems — Energy storage and ripple suppression in industrial and laboratory power modules that require a snap-in radial can solution.

Unique Advantages

• High-voltage handling: 450 V rating enables use in elevated-voltage rails and SMPS designs without stepping up component count.
• Designed for audio: Selected materials and series positioning for audio equipment support improved acoustic sound where capacitor materials affect output quality.
• Robust thermal performance: 105°C temperature rating and 2000-hour endurance at 105°C provide durable performance in high-temperature operating environments.
• Snap-in mounting: Radial snap-in terminals simplify mechanical retention and assembly for high-density power supply boards.
• Measurable ripple capability: Specified ripple currents at both 120 Hz and 50 kHz allow designers to evaluate suitability across low- and high-frequency ripple conditions.
• Regulatory compliance: RoHS compliance supports use in regulated markets and reduces material restriction concerns.

Why Choose LKX2W221MESA45?

The LKX2W221MESA45 is positioned for engineers needing a high-voltage, snap-in aluminum electrolytic capacitor that balances audio-focused material selection with power-system durability. Its 220 µF/450 V rating, 105°C endurance, and specified ripple currents make it well suited to switching power supplies and audio equipment where reliable high-voltage filtering and acoustic performance are important.

This part is a practical choice for designers and purchasers seeking a tested, RoHS-compliant snap-in capacitor from the Nichicon LKX series that delivers known electrical and thermal characteristics for medium-term high-temperature operation.

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