LKX2D681MESA40

The LKX2D681MESA40 is a snap-in, radial can aluminum electrolytic capacitor engineered for audio equipment and switching power supplies. It delivers 680 µF capacitance at a 200 V rating with a polarized snap-in package optimized for robust power filtering and decoupling.

Designed as part of Nichicon’s 105°C standard series with selected materials for superior acoustic sound, this capacitor is RoHS compliant and specified for continuous operation across a wide temperature range and extended endurance at elevated temperatures.

Key Features

• Capacitance & Voltage: 680 µF nominal capacitance with a 200 V rated voltage and ±20% tolerance (120 Hz, 20°C), providing substantial energy storage for power supply smoothing and bulk decoupling.
• High Temperature Endurance: Rated for operation from −40°C to +105°C and specified endurance of 2000 hours at 105°C under DC bias plus rated ripple current, with capacitance change within ±20% after the endurance test.
• Ripple Current Performance: Rated ripple current of 1.75 A at 120 Hz and 2.625 A at 50 kHz, supporting both low- and high-frequency ripple conditions encountered in switching supplies and audio power stages.
• Snap-In Radial Can Package: Snap-in mounting style in a radial can simplifies PCB assembly and provides secure mechanical retention for high-vibration environments.
• Acoustic-Focused Materials: Selected materials and construction aimed at achieving superior acoustic sound suitable for audio equipment applications.
• RoHS Compliant: Meets RoHS directive requirements (2011/65/EU, (EU)2015/863), supporting regulatory compliance for assemblies.
• Leakage Current Characteristic: Leakage current defined by I ≤ 3√3V (µA) after 5 minutes at rated voltage and 20°C, facilitating predictable leakage behavior in designs.

Typical Applications

• Audio Equipment: Bulk smoothing and output filtering in audio amplifiers and power rails where material selection influences acoustic performance.
• Switching Power Supplies: Input/output filtering and energy storage for SMPS designs requiring 200 V rating and elevated ripple handling.
• General-Purpose Power Electronics: Power rail decoupling and bulk storage in industrial and consumer electronics that operate up to 105°C.

Unique Advantages

• High Capacitance at Elevated Voltage: 680 µF at 200 V provides significant energy reserve for smoothing and load transients, reducing the need for large arrays of smaller capacitors.
• Designed for Acoustic Performance: Selected materials and series-level design choices target superior acoustic sound, an advantage in audio-focused power stages.
• Robust Thermal Endurance: 2000 hours rated endurance at 105°C under DC bias plus rated ripple current ensures durability in high-temperature applications.
• Wide Operating Temperature Range: −40°C to +105°C supports use across a broad range of environmental conditions without compromise to basic performance specs.
• Practical Mounting Form Factor: Snap-in radial can simplifies mechanical installation and secures the component for reliable long-term operation.
• Regulatory Compliance: RoHS conformity supports regulatory needs for environmentally restricted applications.

Why Choose LKX2D681MESA40?

The LKX2D681MESA40 combines high capacitance and a 200 V rating with elevated temperature endurance and ripple handling suited for audio equipment and switching power supply designs. Its snap-in radial can package and material choices focused on acoustic quality make it a practical choice for engineers requiring reliable bulk energy storage and sound-conscious performance in demanding thermal environments.

This part is well matched to designers seeking a durable, RoHS-compliant electrolytic solution that maintains capacitance and leakage characteristics after extended high-temperature stress and standard shelf-life conditions, simplifying BOM selection for power and audio applications.

Request a quote or contact sales to discuss availability, lead times, and how LKX2D681MESA40 can be specified into your next power or audio design.