LKX2G391MESB45

The LKX2G391MESB45 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon's LKX series, designed specifically for audio equipment and switching power supplies. It combines a 390 µF capacitance with a 400 V rating and polarized snap‑in packaging to deliver robust bulk energy storage and filtering for high‑voltage power rails.

Selected materials and construction target improved acoustic performance for audio applications while providing high‑temperature endurance (2000 hours at 105°C) and RoHS compliance for modern designs.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a 400 V rated voltage and ±20% tolerance for power‑rail smoothing and bulk storage.
• High‑temperature Endurance — Rated for operation from −25°C to 105°C with a rated lifetime of 2000 hours at 105°C under DC bias plus rated ripple current.
• Snap‑in Mounting — Radial can with snap‑in terminals for secure panel or chassis mounting and ease of assembly.
• Acoustic‑oriented Materials — Selected materials and construction intended to achieve superior acoustic sound in audio equipment applications.
• Ripple Current Capability — Rated ripple performance includes 1.55 A at 120 Hz and 2.216 A at 50 kHz, supporting both low‑ and high‑frequency ripple environments.
• Physical Package — Compact radial can with dimensions L: 4.5 × D: 3 cm and a seated height of 1.772 inches for power‑dense layouts.
• Regulatory Compliance — Compliant with the RoHS directive (2011/65/EU,(EU)2015/863).
• Polarized — Designed as a polarized electrolytic capacitor for DC power applications.

Typical Applications

• Audio Equipment — Bulk filtering and power smoothing in audio amplifiers and related equipment where selected materials are used to support superior acoustic characteristics.
• Switching Power Supplies — High‑voltage energy storage and ripple filtering on the DC side of switching regulators in power conversion systems.
• General Purpose Power Rails — Bulk decoupling and energy reservoir for industrial and professional electronic equipment requiring a 400 V rated capacitor.

Unique Advantages

• High Voltage Handling: 400 V rating enables use on high‑voltage DC rails and in power conversion topologies that require elevated working voltage.
• Audio‑Focused Material Selection: Materials chosen to improve acoustic performance, making the part suitable for audio‑centric power supply designs.
• Robust Thermal Endurance: 2000 hours at 105°C endurance under rated conditions supports long‑term operation in thermally demanding environments.
• Snap‑in Mechanical Reliability: Snap‑in terminals simplify mechanical retention and assembly for chassis‑mounted power modules.
• Measured Ripple Performance: Specified ripple currents (1.55 A at 120 Hz and 2.216 A at 50 kHz) help designers match the capacitor to expected ripple conditions.
• Regulatory Compliance: RoHS compliance supports use in designs requiring restricted‑substance conformance.

Why Choose LKX2G391MESB45?

The LKX2G391MESB45 positions itself as a purpose‑built, high‑voltage electrolytic solution for audio and switching power supply applications that demand reliable bulk capacitance and thermal endurance. Its combination of a 390 µF capacitance, 400 V rating, and snap‑in radial package makes it suitable for designers seeking a compact, mountable capacitor with specified ripple performance and extended high‑temperature life.

This part is appropriate for engineers and procurement teams building high‑voltage power rails in audio equipment, power supplies, or general industrial electronics who require verifiable endurance, RoHS compliance, and acoustic‑oriented material choices from a known manufacturer.

To request a quote or check availability for LKX2G391MESB45, please submit a quote request to sales with your quantity and delivery requirements.