LKX2G271MESA45

The LKX2G271MESA45 is a Nichicon LKX series snap‑in aluminum electrolytic capacitor designed for audio equipment and switching power supplies. It delivers 270 µF at a 400 V rating in a radial can with snap‑in terminals, offering reliable high‑voltage energy storage and filtering for general‑purpose power applications.

Selected materials and construction are chosen to achieve superior acoustic sound characteristics while meeting RoHS requirements, making this capacitor suitable for audio‑centric power designs that require high voltage handling and long endurance at elevated temperature.

Key Features

• High voltage & capacitance — 270 µF nominal capacitance at a 400 V rated voltage for bulk energy storage and high‑voltage filtering in power rails.
• Snap‑in, radial can package — Snap‑in terminal mounting for secure PCB retention and easy assembly in power supply layouts.
• Audio‑grade materials — Selected materials aimed at superior acoustic sound, suitable for audio equipment power stages and signal‑sensitive designs.
• Operating temperature & endurance — Specified for −25 °C to 105 °C with an endurance rating of 2000 hours at 105 °C under rated bias and ripple conditions.
• Ripple current performance — Rated ripple current values include 1.22 A at 120 Hz and 1.745 A at 50 kHz; frequency coefficients for 400–450 V parts are provided in the datasheet (e.g., 120 Hz = 1.00, 50 kHz or more = 1.43).
• Polarized, ±20% tolerance — Polarized aluminum electrolytic with capacitance tolerance of −20% to +20% at 120 Hz, 20 °C.
• RoHS compliant — Conforms to RoHS directives (2011/65/EU, (EU)2015/863).
• Leakage current specification — Leakage current defined in the datasheet as I ≤ 3√3V (µA) after 5 minutes at 20 °C, providing a verifiable leakage limit for design calculations.

Typical Applications

• Audio equipment power supplies — Bulk filtering and energy storage in audio switching supplies where material selection supports acoustic performance.
• Switching power supplies — High‑voltage smoothing and ripple suppression on 400 V rails in SMPS front‑end and intermediate circuits.
• General purpose high‑voltage circuits — Energy storage and decoupling in industrial and consumer designs that require a 400 V rated electrolytic solution.

Unique Advantages

• Audio‑oriented material selection — Materials chosen to support superior acoustic sound, helping preserve signal quality where power stage noise matters.
• High‑voltage capability — 400 V rating enables use in elevated DC bus and SMPS applications without the need for series stacking.
• Robust thermal endurance — 2000 hours at 105 °C endurance under rated conditions supports long‑term reliability in thermally challenging environments.
• Snap‑in mounting — Mechanically secure, board‑friendly package to simplify assembly in power supply modules and high‑vibration equipment.
• Frequency‑aware ripple specification — Datasheet provides ripple current values and frequency coefficients for the 400–450 V range, enabling accurate ripple and thermal design.
• RoHS compliance — Environmentally compliant materials for global product designs requiring RoHS conformance.

Why Choose LKX2G271MESA45?

The LKX2G271MESA45 combines a high 400 V rating with 270 µF capacitance in a snap‑in radial can built for audio and switching power supply environments. Its specified endurance at 105 °C, defined leakage current, and ripple current data give engineers the verifiable performance needed for power‑stage design and thermal budgeting.

This part is well suited for designers of audio equipment and high‑voltage SMPS who need a RoHS‑compliant, audio‑optimized electrolytic capacitor with secure snap‑in mounting and documented frequency‑dependent ripple behavior. Backed by Nichicon’s LKX series specifications, it supports reliable long‑term operation in demanding power applications.

Request a quote or contact sales to discuss availability, lead times, and how LKX2G271MESA45 can fit into your next audio or high‑voltage power design.