LKX2W221MESB35

The LKX2W221MESB35 is a snap-in terminal aluminum electrolytic capacitor in Nichicon's LKX series, specified for audio equipment and switching power supplies. It provides a 220 µF capacitance at a 450 V rating, combining high-voltage capability with a package designed for secure snap-in mounting.

Designed with materials selected to enhance acoustic performance, this capacitor is intended for general-purpose power filtering in applications that require robust thermal endurance and straightforward board-level installation.

Key Features

• Capacitance & Voltage — 220 µF nominal capacitance at a 450 V rated voltage, with tolerance ±20% (120 Hz, 20°C).
• Snap-in Radial Can Package — Snap-in terminal type in a radial can package for reliable mechanical retention and straightforward PCB assembly.
• Operating Temperature Range — Rated for use from −25°C to +105°C for the 400–450 V range.
• Endurance — Robust endurance: 2000 hours at 105°C under DC bias plus rated ripple current, with capacitance change within ±20% after the test.
• Ripple Current Performance — Rated ripple current of 1.05 A at 120 Hz and 1.502 A at 50 kHz, with frequency-dependent coefficients provided in the LKX series documentation.
• Polarized Type — Polarized construction for DC power applications.
• RoHS Compliant — Manufactured in compliance with RoHS directives.
• Compact Dimensions — Physical size specified as L: 3.5 × D: 3 cm for board planning and enclosure fit.

Typical Applications

• Switching Power Supplies — Bulk and smoothing capacitance for high-voltage rails in switching regulators and power conversion stages.
• Audio Equipment Power Sections — Designed with selected materials to support superior acoustic sound characteristics in audio power supplies and amplification systems.
• General-Purpose Power Filtering — General-purpose DC filtering and energy storage in industrial and consumer electronics where a high-voltage snap-in capacitor is required.

Unique Advantages

• High Voltage Capability: 450 V rating enables use on higher-voltage DC rails without series stacking.
• Audio-Optimized Materials: Selected materials in the LKX series target improved acoustic performance for audio equipment applications.
• Extended High-Temperature Endurance: Rated for 2000 hours at 105°C under rated conditions, helping designs tolerate elevated operating temperatures.
• Reliable Snap-in Mounting: Radial, snap-in can package provides secure mechanical retention for through-hole PCB assemblies.
• Measured Ripple Performance: Specified ripple current values at 120 Hz and 50 kHz allow designers to assess thermal and ripple handling across typical power frequencies.
• Regulatory Compliance: RoHS compliance supports environmentally conscious product designs.

Why Choose LKX2W221MESB35?

LKX2W221MESB35 positions itself as a high-voltage, snap-in aluminum electrolytic solution tailored for audio equipment and switching power supply designs. Its 450 V rating, 220 µF capacitance, and material selection aimed at acoustic performance make it suitable for engineers specifying robust DC filtering where sound quality and high-voltage operation matter.

With a proven endurance profile at 105°C, polarized construction, and snap-in packaging, this capacitor delivers a combination of electrical performance and mechanical reliability for general-purpose power applications requiring long-term thermal stability and straightforward board-level installation.

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