LKX2W331MESB45

The LKX2W331MESB45 is a snap-in terminal aluminum electrolytic capacitor designed for audio equipment and switching power supplies. It delivers 330 µF capacitance at a 450 V rated voltage in a radial, can-style snap-in package suited for power filtering and energy storage in high-voltage circuits.

This capacitor is polarized, RoHS compliant, and specified for operation from −25 °C to +105 °C with an endurance rating of 2000 hours at 105 °C, offering stability for sustained high-temperature applications.

Key Features

• Electrical — 330 µF nominal capacitance with ±20% tolerance and a 450 V rated voltage for high-voltage energy storage and filtering.
• Ripple Performance — Rated ripple currents include 1.38 A at 120 Hz and 1.973 A at 50 kHz; frequency coefficients for 400–450 V are provided in the datasheet (e.g., 120 Hz = 1.00, 50 kHz or more = 1.43) to size ripple handling across frequencies.
• Thermal and Reliability — Operating temperature range −25 °C to +105 °C with a 2000-hour endurance at 105 °C under DC bias plus rated ripple current; leakage current and tan δ limits are specified in the datasheet.
• Mounting and Packaging — Snap-in (radial can) package for secure PCB installation; physical size approximately L: 4.5 × D: 3 cm with a maximum seated height of 1.772 inches.
• Audio-optimized Materials — Constructed using selected materials to support superior acoustic sound as noted in the LKX series documentation.
• Regulatory — RoHS compliant.

Typical Applications

• Audio Equipment — Filtering and energy storage in audio power supplies where capacitor construction and selected materials help support acoustic performance.
• Switching Power Supplies — Bulk filtering and smoothing on high-voltage rails in switching PSU topologies that require 450 V rated components.
• General-Purpose Power Electronics — High-voltage power filtering and decoupling in industrial or commercial equipment that operate within the specified temperature and endurance parameters.

Unique Advantages

• High Voltage Rating: 450 V nominal rating enables use on elevated DC link and high-voltage rails.
• Substantial Capacitance: 330 µF provides significant energy storage per component for bulk filtering and transient support.
• Snap-in Mounting: Radial snap-in terminals simplify PCB retention and mechanical stability in power assemblies.
• High-Temperature Endurance: Specified 2000 hours at 105 °C under rated conditions for reliable performance in thermally demanding environments.
• Audio-Focused Materials: Selected materials in the LKX series target improved acoustic characteristics for audio designs.
• RoHS Compliant: Enables deployment in designs requiring restricted-substance compliance.

Why Choose LKX2W331MESB45?

LKX2W331MESB45 combines a high 450 V rating with a sizable 330 µF capacitance in a snap-in aluminum electrolytic package tailored for audio equipment and switching power supply applications. Its specified ripple current values across frequencies, along with a 2000-hour qualification at 105 °C, make it suitable for designers who need durable high-voltage filtering and energy storage in thermally challenging designs.

This part is well-suited to engineers and procurement teams building high-voltage power electronics or audio power stages that require verified endurance, polarization, and RoHS compliance backed by series documentation and datasheet specifications.

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