LKX2E391MESA30

The LKX2E391MESA30 is a polarized aluminum electrolytic capacitor in a radial, snap‑in can package from Nichicon's LKX series. It delivers 390 µF capacitance at a 250 V rating and is designed specifically for audio equipment and switching power supply applications.

Built from selected materials to achieve superior acoustic sound and specified for operation up to 105 °C, this RoHS‑compliant component balances ripple handling, thermal endurance and secure PCB mounting for general‑purpose power and audio designs.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a 250 V rated voltage suitable for high‑voltage power rails.
• Package & Mounting — Radial, snap‑in can (snap‑in terminal type) for reliable mechanical retention and straightforward PCB assembly.
• Temperature Range & Endurance — Rated for operation from −40 °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 current of 1.3 A at 120 Hz and 1.95 A at 50 kHz, supporting switching regulator and audio power applications.
• Tolerance & Polarization — Capacitance tolerance ±20% (at 120 Hz, 20 °C); polarized design for DC filtering and energy storage roles.
• Audio‑Oriented Materials — Selected materials in the LKX series to support superior acoustic sound in audio equipment applications.
• Regulatory Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).
• Compact Footprint — Body dimensions approximately L: 3.0 cm × D: 2.5 cm for space‑conscious layouts.

Typical Applications

• Audio Equipment — Used for power smoothing and decoupling where selected materials contribute to improved acoustic characteristics.
• Switching Power Supplies — Filter and energy storage in high‑voltage rails of SMPS designs, compatible with specified ripple current handling.
• General‑Purpose Power Electronics — Bulk capacitance and DC link duties in industrial and consumer power designs that require a 250 V rated polarized capacitor.

Unique Advantages

• Acoustic‑oriented construction: Selected series materials target superior sound quality for audio applications, aligning capacitor choice with audio system design needs.
• High‑temperature endurance: Rated for continuous operation up to 105 °C with a 2000‑hour endurance specification to support demanding thermal environments.
• Robust ripple performance: Defined ripple current specifications at both low and high frequencies (1.3 A @ 120 Hz, 1.95 A @ 50 kHz) to meet switching and audio power demands.
• Secure PCB mounting: Snap‑in terminal radial can provides mechanical stability for vertical mounting and simplified assembly.
• Regulatory compliance: RoHS compliance for easier integration into products targeting restricted‑substance requirements.

Why Choose LKX2E391MESA30?

The LKX2E391MESA30 positions itself as a durable, audio‑focused electrolytic capacitor for designers needing 390 µF at 250 V in a snap‑in radial package. Its combination of specified ripple current handling, 105 °C endurance and materials selected for acoustic performance make it well suited for audio equipment, switching power supplies and general power electronics where both electrical and sound performance matter.

Engineers and procurement teams will find this part appropriate for designs requiring polarized bulk capacitance with clear, verifiable specifications for temperature range, tolerance, ripple current and lifecycle performance.

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