LKX2E391MESY45

The LKX2E391MESY45 is a snap‑in terminal aluminum electrolytic capacitor from Nichicon’s LKX series, optimized for audio equipment and switching power supply applications. It provides 390 µF capacitance at a 250 V rating in a radial, can-style snap‑in package for robust board retention and serviceable mounting.

Designed for general-purpose power filtering and smoothing, this polarized capacitor combines a wide operating temperature range and specified ripple handling to support reliable operation in demanding power and audio environments.

Key Features

• Capacitance & Voltage: 390 µF nominal capacitance with a 250 V rated voltage suitable for mid‑ to high‑voltage power rails.
• Snap‑in Can Package: Radial, can-style snap‑in mounting provides secure PCB retention for through‑hole assemblies and easier handling during assembly.
• Temperature Range & Endurance: Rated for operation from −40 °C to +105 °C with an endurance specification of 2000 hours at 105 °C under rated conditions.
• Ripple Current Performance: Specified ripple current of 1.3 A at 120 Hz and 1.95 A at 50 kHz, supporting AC ripple and switching supply applications across common frequencies.
• Acoustic Design Consideration: Selected materials and construction targeted to achieve superior acoustic sound, highlighting suitability for audio equipment applications.
• Tolerance & Polarization: Capacitance tolerance of −20% to +20% and polarized construction for proper electrolytic application.
• RoHS Compliant: Manufactured in compliance with RoHS requirements.

Typical Applications

• Audio Equipment: Power supply smoothing and decoupling in audio amplifiers and components where material selection targets improved acoustic characteristics.
• Switching Power Supplies: Bulk filtering and ripple suppression on mid‑voltage rails within switching regulator outputs and power conversion stages.
• General Purpose Power Filtering: Energy storage and smoothing in industrial and consumer electronic systems requiring a polarized electrolytic capacitor.

Unique Advantages

• Rated for Mid‑High Voltage: 250 V rating enables use on higher-voltage rails without stacking or additional components.
• High‑Temperature Endurance: 2000 hours at 105 °C provides defined longevity under elevated operating temperatures for more predictable maintenance cycles.
• Frequency‑aware Ripple Handling: Specified ripple current at both low (120 Hz) and high (50 kHz) frequencies helps designers match capacitor selection to switching and audio frequency environments.
• Secure Snap‑in Mounting: Radial snap‑in terminals simplify board placement and improve mechanical retention in through‑hole assemblies.
• Audio‑focused Materials: Component construction and selected materials are tuned to support quality sound reproduction in audio applications.
• RoHS Compliance: Meets RoHS directive requirements for restricted substances.

Why Choose LKX2E391MESY45?

The LKX2E391MESY45 positions itself as a reliable, application-focused electrolytic solution for designers needing a 390 µF, 250 V polarized capacitor with defined ripple performance and elevated temperature endurance. Its snap‑in can package and material choices make it especially suitable for audio equipment and switching power supply designs where both electrical performance and acoustic considerations matter.

This capacitor is well suited for engineers and procurement teams seeking a RoHS‑compliant, general‑purpose electrolytic with clear lifetime and ripple specifications to support predictable design outcomes and long‑term robustness.

To request a quote, check availability, or get more information on lead times and ordering, contact our sales team or submit a request for a formal quote.