LKX2W391MESC40

The LKX2W391MESC40 is a snap-in terminal aluminum electrolytic capacitor designed for audio equipment and switching power supplies. It combines a high 450 V rated voltage with 390 µF capacitance in a snap-in can package suitable for robust board mounting.

Engineered from selected materials to prioritize acoustic performance, this capacitor is part of a 105°C standard series that offers long-term endurance and RoHS compliance for modern electronic assemblies.

Key Features

• Capacitance & Voltage: 390 µF rated capacitance at 450 V, with capacitance tolerance ±20% (measured at 120 Hz, 20°C).
• Package & Mounting: Snap-in radial can package for secure PCB installation and efficient assembly in power and audio systems.
• Temperature & Lifetime: Rated operating range −25°C to +105°C with endurance specified as 2000 hours at 105°C under DC bias plus rated ripple current.
• Ripple Current Performance: Specified ripple current of 1.61 A at 120 Hz and 2.302 A at 50 kHz, with frequency coefficients provided for scaling across operating frequencies.
• Acoustic-Grade Materials: Selected materials and construction focus on achieving superior acoustic sound for audio applications.
• Polarized Electrolytic: Polarized design suitable for DC filtering and energy storage in power circuits.
• RoHS Compliant: Meets RoHS directive requirements (2011/65/EU, (EU)2015/863), supporting regulatory compliance in assemblies.
• Compact Dimensions: Physical size approximately L: 4 cm × D: 3.5 cm, offering a high-voltage solution in a compact footprint.

Typical Applications

• Audio Equipment: Bulk filtering and power smoothing in audio amplifiers and other audio electronics where material selection supports acoustic quality.
• Switching Power Supplies: High-voltage bulk or smoothing capacitor for switch-mode power supplies used in industrial and consumer electronics.
• General Purpose Electronics: General-purpose DC filtering and energy storage where a polarized, high-voltage electrolytic is required.

Unique Advantages

• High Voltage Capability: 450 V rating enables use in high-voltage supply rails and applications requiring elevated working voltages.
• Designed for Acoustic Performance: Selected materials and series design aim to improve sound quality when used in audio equipment.
• High-Temperature Endurance: 2000 hours at 105°C endurance under rated conditions supports reliability in demanding thermal environments.
• Frequency-Aware Ripple Ratings: Rated ripple currents provided at multiple frequencies (including 120 Hz and 50 kHz) help engineers size capacitors for expected operating conditions.
• Assembly-Friendly Snap-In Form: Snap-in terminals simplify PCB mounting and provide secure mechanical retention for high-stress applications.
• Regulatory Compliance: RoHS compliance supports inclusion in modern, environmentally regulated product designs.

Why Choose LKX2W391MESC40?

The LKX2W391MESC40 positions itself as a durable, high-voltage electrolytic solution for designers building audio equipment and switching power supplies. With a 450 V rating, 390 µF capacitance, and a 105°C endurance profile, it is suited to applications demanding both electrical robustness and attention to acoustic performance.

This part is a fit for engineers and procurement teams seeking a polarized snap-in capacitor that balances high-voltage capability, frequency-aware ripple handling, and material choices tuned for audio use, backed by RoHS compliance and defined endurance specifications.

Request a quote or submit an inquiry to discuss pricing, availability, or integration guidance for LKX2W391MESC40 and to receive detailed support for your application requirements.