LKX2D391MESY40

The LKX2D391MESY40 is a 390 µF, 200 V polarized aluminum electrolytic capacitor in a snap‑in can package, optimized for audio equipment and switching power supplies. Built from selected materials to achieve superior acoustic sound, this 105 °C standard series part combines high capacitance and ripple handling with a snap‑in mounting style for secure installation in power applications.

Key Features

• Capacitance & Voltage — 390 µF rated capacitance with a 200 V rated voltage and ±20% tolerance at 120 Hz, 20 °C.
• Thermal Performance — Operates from −40 °C to +105 °C with endurance specified as 2000 hours at 105 °C under D.C. bias plus rated ripple current.
• Ripple Current — Rated ripple current of 1.31 A at 120 Hz; frequency behavior provided up to high frequencies (1.965 A at 50 kHz measured ripple current available).
• Package & Mounting — Radial, snap‑in can package (20 × 40 mm) designed for secure snap‑in terminal mounting on power PCBs.
• Audio‑Grade Materials — Selected materials and construction specifically cited to support superior acoustic sound in audio equipment designs.
• Regulatory Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).
• Reliability Metrics — Endurance and shelf‑life characteristics defined by capacitance change, tan δ, and leakage current limits after specified stress and storage conditions.

Typical Applications

• Audio Equipment — Power filtering and bulk energy storage in audio amplifiers and related equipment where selected materials support acoustic performance.
• Switching Power Supplies — Bulk and smoothing capacitor for 200 V power rails in switch‑mode power supplies.
• General Purpose Power Electronics — High‑capacitance, high‑voltage applications requiring snap‑in mounting and 105 °C operation.

Unique Advantages

• High Voltage Bulk Capacitance: 390 µF at 200 V provides substantial energy storage for smoothing and decoupling in power rails.
• Designed for Audio Quality: Selected materials and construction aimed at superior acoustic sound make it suitable for audio‑centric power stages.
• Robust Thermal Endurance: Rated for continuous operation at 105 °C with a 2000‑hour endurance specification for reliable performance in demanding thermal environments.
• Snap‑In Mounting: Radial snap‑in can package (20 × 40 mm) enables secure PCB retention and simplified assembly in power modules and chassis.
• Frequency‑Aware Ripple Performance: Specified ripple current at 120 Hz (1.31 A) and measured high‑frequency ripple current figures support designs across switching frequencies.
• RoHS Compliant: Meets RoHS directive requirements for restricted substances.

Why Choose LKX2D391MESY40?

LKX2D391MESY40 positions itself as a purpose‑built electrolytic solution for designers who need high capacitance at 200 V with robust thermal endurance and snap‑in mounting. Its materials and construction target audio applications while the endurance and ripple specifications make it suitable for demanding switching power supply and general power electronics designs.

This part is suited for engineers and procurement teams seeking a RoHS‑compliant, 105 °C rated aluminum electrolytic capacitor that combines acoustic‑focused materials with practical power handling and secure snap‑in installation.

If you’d like pricing or availability information, request a quote or submit an inquiry and our team will respond with the details you need.