LKX2E821MESB40

The LKX2E821MESB40 is a snap‑in terminal aluminum electrolytic capacitor designed for audio equipment and switching power supplies. It delivers 820 µF at 250 V in a polarized radial can package, combining high bulk capacitance with snap‑in mounting for secure PCB assembly.

Engineered for elevated operating environments, the part is specified for –40 °C to 105 °C, includes materials selected for superior acoustic sound, and is RoHS compliant.

Key Features

• Capacitance & Voltage 820 µF nominal capacitance with a 250 V rated voltage and ±20% tolerance for bulk energy storage and smoothing.
• High‑Temperature 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.
• Snap‑In Radial Can Package Snap‑in terminal, radial can construction for secure through‑hole mounting; physical dimensions approximately L: 4 × D: 3 cm with seated height specified.
• Ripple Current Performance Specified ripple handling of 2 A at 120 Hz and 3 A at 50 kHz to support both low‑ and high‑frequency ripple conditions.
• Acoustic‑Grade Materials Selected materials intended to achieve superior acoustic sound, targeting audio equipment applications.
• Regulatory Compliance & Polarity Polarized electrolytic design and RoHS compliant to 2011/65/EU and (EU)2015/863.

Typical Applications

• Audio Equipment — Bulk storage and power‑supply smoothing in amplifiers and audio power stages where materials are selected to support acoustic performance.
• Switching Power Supplies — Bulk and output filtering at 250 V in high‑voltage switching regulator designs operating at elevated temperatures.
• General Purpose Power Circuits — Polarized high‑voltage filtering and decoupling in industrial and consumer power subsystems.

Unique Advantages

• High Bulk Energy Density: 820 µF at 250 V provides substantial capacitance for smoothing and energy buffering in high‑voltage rails.
• Elevated Temperature Reliability: 105 °C rated operation with a 2000‑hour endurance specification supports sustained performance in warm operating environments.
• Acoustic‑Focused Material Selection: Materials chosen to enhance audio characteristics where sound quality is a design consideration.
• Secure Snap‑In Mounting: Radial snap‑in can simplifies assembly and provides mechanical retention for through‑hole PCBs.
• Specified Ripple Handling: Rated ripple currents at 120 Hz and 50 kHz enable use across a range of switching and line‑frequency conditions.
• RoHS Compliance: Conforms to applicable RoHS directives for regulatory alignment in commercial products.

Why Choose LKX2E821MESB40?

LKX2E821MESB40 is positioned for designs that require a high‑capacitance, high‑voltage electrolytic capacitor with reliable performance at elevated temperatures. Its 820 µF / 250 V rating, 105 °C endurance, and specified ripple current make it suitable for power supplies and audio equipment where bulk energy storage, thermal robustness, and acoustic considerations matter.

This capacitor is a practical choice for engineers and procurement teams building switching power supplies, amplifier power rails, or general purpose power modules that demand a polarized, snap‑in aluminum electrolytic with defined lifetime and ripple specifications.

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