LKX2W121MESA30

The LKX2W121MESA30 is a snap-in terminal aluminum electrolytic capacitor designed for audio equipment and switching power supplies. It combines a 450 V voltage rating with 120 µF capacitance in a radial, can-type snap-in package for robust power-filtering roles.

Engineered as part of a 105°C standard series, this capacitor uses selected materials to support superior acoustic sound while delivering high-temperature endurance and RoHS compliance for professional audio and industrial power applications.

Key Features

• Electrical Performance — 120 µF, 450 V  120 µF capacitance with a 450 V rated voltage and ±20% tolerance for stable high-voltage energy storage.
• Ripple-Handling Capability  Specified ripple current of 720 mA at 120 Hz and 1.03 A at 50 kHz; frequency coefficients for 400–450 V rails (50 Hz: 0.77, 60 Hz: 0.82, 120 Hz: 1.00, 50 kHz+: 1.43) allow frequency-dependent ripple sizing.
• High-Temperature Endurance  Rated for operation from –25°C to +105°C with a specified endurance of 2000 hours at 105°C under D.C. bias plus rated ripple current (capacitance change within ±20%, leakage current ≤ initial value).
• Acoustic-Optimized Materials  Selected materials and construction targeted to achieve superior acoustic sound for audio-focused power circuits.
• Mechanical & Mounting  Radial, can-type snap-in package (snap-in terminal) for secure chassis or board-mount assembly; physical size L: 3 × D: 2.5 cm.
• Polarized Design  Polar capacitor suitable for typical DC filtering and smoothing applications.
• Regulatory Compliance  Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Audio Equipment Power Supplies  Bulk smoothing and energy storage in switching supplies where material selection contributes to improved acoustic performance.
• Switching Power Supplies  High-voltage rail decoupling and ripple filtering on 400–450 V DC buses with high ripple-current requirements.
• Professional and Industrial Power Filtering  High-temperature, high-voltage filtering in enclosed or continuously operating power systems.

Unique Advantages

• High-voltage capability: 450 V rating enables direct use on elevated DC rails without series stacking, simplifying designs.
• Validated high-temperature reliability: 2000 hours endurance at 105°C under rated conditions supports long-term operation in hot environments.
• Frequency-aware ripple handling: Published ripple current values and frequency coefficients help engineers size capacitors accurately across low and high-frequency ripple.
• Acoustic-optimized construction: Material choices intended to improve acoustic characteristics make this capacitor well suited to audio-focused power stages.
• Secure snap-in mounting: Radial snap-in can simplifies mechanical retention for chassis-mounted power supplies and reduces assembly complexity.
• RoHS compliance: Meets current RoHS requirements, easing regulatory conformance for commercial products.

Why Choose LKX2W121MESA30?

The LKX2W121MESA30 positions itself as a high-voltage, high-temperature electrolytic solution for designers of audio and switching power systems who need reliable bulk capacitance with attention to acoustic performance. Its 450 V rating, explicit ripple-current specifications, and documented endurance at 105°C provide quantifiable parameters for thermal and electrical design margins.

Manufactured by Nichicon and built for continuous operation in demanding environments, this capacitor is suitable for engineers seeking a robust, RoHS-compliant component for professional audio power supplies and industrial filtering tasks where both electrical performance and acoustic considerations matter.

Request a quote or submit an inquiry to our sales team to discuss pricing, lead times and sample availability for the LKX2W121MESA30.