LQS2W561MELC50

The LQS2W561MELC50 is a Nichicon LQS-series aluminum electrolytic capacitor with a snap-in terminal configuration designed for high-speed charge–discharge applications. It provides 560 µF capacitance at a rated voltage of 450 V and is specified for operation from –25 °C to +105 °C.

Engineered for power conversion environments, this capacitor is suited to high-frequency regenerative voltages encountered in AC servomotors and general inverters, equipment operating in voltage-fluctuating areas, and rectifier circuits such as voltage doublers. It is RoHS compliant.

Key Features

• Capacitance & Voltage — 560 µF nominal capacitance with a 450 V rated voltage for energy storage in high-voltage power circuits.
• High-Temperature Operation — Rated to +105 °C with a specified 3000-hour endurance at 105 °C under DC bias plus rated ripple current.
• Snap-in Radial Can — Snap-in terminal mounting for secure mechanical retention in power assemblies and ease of PCB installation.
• Charge–Discharge Endurance — Endurance under repeated charge–discharge: after 50 million cycles (6 Hz, room temperature, charge–discharge voltage = rated voltage + 0.35 V) capacitance change remains within ±20% and leakage/tan δ meet specified limits.
• Ripple Current Capability — Rated ripple current specified as 1.99 A at 120 Hz and 2.846 A at 50 kHz, suitable for both low- and high-frequency ripple environments.
• Leakage & Dissipation — Leakage current specified by I ≤ 3√(C·V) μA (after 5 minutes at 20 °C); tangent of loss angle (tan δ) specified up to 0.20 for 450 V parts.
• Low-Temperature Stability — Impedance ratio Z(–25 °C)/Z(+20 °C) up to 8 for rated voltages 350–450 V, supporting use in colder ambient conditions.
• RoHS Compliance — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servomotor Regeneration: Energy buffering and smoothing in high-frequency regenerative voltage circuits for motor drives.
• General Inverters: Bulk energy storage and ripple management in inverter DC-link and power-stage circuits.
• Voltage-Fluctuating Equipment: Stabilizing DC supply in systems exposed to variable line conditions or transient voltages.
• Rectifier / Voltage Doubler Circuits: Filtering and charge storage in rectifier stages and voltage-doubler topologies.

Unique Advantages

• High-Voltage Energy Density: 560 µF at 450 V provides substantial stored energy for power-stage filtering and transient suppression.
• Designed for High-Frequency Duty: Ripple current ratings at 120 Hz and 50 kHz support both mains-frequency and high-frequency switching environments.
• Thermal and Endurance Reliability: 105 °C rating with 3000-hour endurance and verified charge–discharge lifetime characteristics help ensure longer service life in demanding applications.
• Robust Mechanical Mounting: Snap-in radial can format offers secure mounting for power modules and assemblies where mechanical retention is important.
• Measured Low-Temperature Performance: Specified impedance stability down to –25 °C aids performance predictability across a wide ambient range.
• Compliance-Ready: RoHS compliance supports deployments requiring restricted-substance conformance.

Why Choose LQS2W561MELC50?

The LQS2W561MELC50 is positioned for power-electronics designs that require high-voltage bulk capacitance, robust thermal endurance to 105 °C, and proven charge–discharge reliability. Its combination of 560 µF at 450 V, snap-in mounting, and ripple current capability addresses common needs in inverter, motor-drive, and power conversion systems operating in variable-voltage environments.

Choose this Nichicon LQS-series part when your design requires a durable, RoHS-compliant aluminum electrolytic capacitor with specified endurance and measurable performance across temperature and frequency conditions.

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