LQS2V561MELC35

The LQS2V561MELC35 is a snap‑in terminal aluminum electrolytic capacitor rated at 350 V and 560 µF with ±20% tolerance. Designed for high‑speed charge‑discharge performance, it targets power electronics applications such as high‑frequency regenerative circuits, inverters and equipment operating in fluctuating voltage environments.

This polarized, radial can package is specified for operation from –25°C to +105°C and is compliant with RoHS (2011/65/EU, (EU)2015/863), making it suitable for demanding industrial power designs that require elevated temperature endurance and high ripple capability.

Key Features

• Electrical Capacity — 560 µF capacitance at a 350 V rated voltage with ±20% tolerance for energy buffering and smoothing in high‑voltage supplies.
• High‑speed charge‑discharge — Engineered for repeated charge/discharge cycles; the series endurance test covers 50 million cycles under specified conditions to verify charge/discharge behavior.
• Ripple performance — Rated ripple current of 1.5 A at 120 Hz and 2.145 A at 50 kHz to support both low‑ and high‑frequency applications.
• Temperature and endurance — Operating range –25°C to +105°C with an endurance rating of 3000 hours at 105°C under DC bias plus rated ripple current.
• Low‑loss characteristics — Dissipation factor (tan δ) specified at a maximum of 0.15 for 350 V at 120 Hz, supporting efficient energy handling.
• Mechanical / Mounting — Snap‑in radial can package (size: L 3.5 × D 3.5 cm, height seated max 1.378 inch) for PCB snap‑in mounting and secure mechanical retention.
• Leakage current specification — Leakage current follows the standard I ≤ 3√(C·V) (µA) after 5 minutes at 20°C, providing a predictable leakage behavior reference for design.
• RoHS compliant — Conforms to applicable RoHS directives (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor regenerative circuits — Energy recovery and buffering in high‑frequency regenerative systems where fast charge/discharge cycles are required.
• General inverters — DC link and smoothing applications in inverter power stages operating under fluctuating load and voltage conditions.
• Voltage‑fluctuation environments — Systems exposed to unstable supply voltages that require reliable bulk capacitance and thermal endurance.
• Rectifier/voltage doubler circuits — Use in rectifier or voltage doubler topologies where stable high‑voltage capacitance is needed.

Unique Advantages

• High‑voltage energy storage: 350 V rating combined with 560 µF capacitance provides substantial energy buffering for power electronics DC buses.
• Designed for repeated charge/discharge: Series charge‑discharge endurance testing demonstrates suitability for regenerative and cyclic applications.
• Wide operating temperature: –25°C to +105°C range with 3000 hours endurance at 105°C supports robust operation in elevated‑temperature industrial environments.
• Dual‑frequency ripple capability: Specified ripple currents at 120 Hz and 50 kHz make the part applicable across a range of switching and line frequencies.
• Snap‑in mounting convenience: Radial snap‑in can simplifies PCB assembly and provides a secure mechanical connection for high‑power boards.
• Predictable leakage and loss behavior: Clear leakage current formula and tan δ limits enable designers to model performance and thermal dissipation accurately.

Why Choose LQS2V561MELC35?

The LQS2V561MELC35 combines high‑voltage rating, substantial capacitance and high‑temperature endurance in a snap‑in aluminum electrolytic package intended for power electronics applications. Its charge/discharge characterization, dual‑frequency ripple specifications and RoHS compliance make it a practical choice for engineers building inverters, regenerative drives and equipment exposed to variable voltages.

This capacitor is suited to designs that require reliable bulk energy storage, predictable leakage and loss characteristics, and a mounting style that supports robust PCB retention. The specified endurance and thermal ratings provide clear expectation for long‑term performance in industrial power systems.

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