LQS2G561MELC40

The LQS2G561MELC40 is a snap‑in terminal aluminum electrolytic capacitor designed for high‑speed charge‑discharge environments. It delivers 560 µF at a 400 V rating in a radial can snap‑in package and is part of Nichicon's LQS series engineered for demanding power applications.

Intended for applications with frequent voltage swings and regenerative energy, this capacitor offers high operating temperature capability and endurance characteristics tailored for inverters, AC servomotors and rectifier circuits.

Key Features

• Capacitance & Voltage — 560 µF nominal capacitance at a 400 V rated voltage with ±20% tolerance.
• High‑Temperature Operation — Rated for operation from −25°C to +105°C, supporting high temperature application environments.
• High‑Speed Charge‑Discharge — Designed for high speed charge‑discharge behavior; specified endurance for repeated charge/discharge cycles as detailed in the series datasheet.
• Endurance — Rated for 3000 hours at 105°C under DC bias plus rated ripple current per the LQS series specifications.
• Ripple Current Capability — Specified ripple current of 1.9 A at 120 Hz and 2.717 A at 50 kHz for applications with significant AC components.
• Package & Mounting — Radial can with snap‑in terminals for secure PCB mounting and robust mechanical retention.
• Leakage Current Specification — Leakage current conforms to I ≤ 3√(C·V) µA after 5 minutes at 20°C, per series specification.
• Dielectric Loss (tan δ) — tan δ maximum of 0.15 at 400 V (measured at 120 Hz, 20°C) as specified for the LQS series.
• RoHS Compliant — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).
• Physical Size — Package dimensions: length 4.0 cm × diameter 3.5 cm (radial can).

Typical Applications

• AC Servomotor Drives — Handles high‑frequency regenerative voltages and rapid charge/discharge cycles in servo inverter circuits.
• General Inverters — Suited for inverter DC link and energy buffering where voltage fluctuates under load.
• Voltage Doubler Rectifiers — Applicable to rectifier circuits that require robust charge storage and ripple handling.
• Equipment in Fluctuating Voltage Areas — Designed for systems exposed to frequent voltage swings and regenerative events.

Unique Advantages

• Designed for Regenerative Loads: Specified for high‑speed charge/discharge and regenerative voltage environments, making it appropriate for motor control and inverter use.
• High Temperature Endurance: 105°C rated operation and 3000‑hour endurance at that temperature provide predictable life under elevated thermal stress.
• Measured Ripple Performance: Published ripple current values at both low and high frequencies (120 Hz and 50 kHz) help designers size thermal and lifetime margins accurately.
• Reliable Leakage and Loss Characteristics: Leakage current limit and tan δ specification (0.15 at 400 V) enable predictable electrical behavior in filter and energy storage roles.
• Robust Mounting: Snap‑in radial can package offers solid mechanical retention for power‑dense PCB layouts.
• RoHS Compliance: Meets applicable RoHS directives, simplifying regulatory considerations for many industrial applications.

Why Choose LQS2G561MELC40?

The LQS2G561MELC40 is positioned for power electronics designs that require stable energy storage under frequent charge/discharge and temperature stress. Its 400 V rating, 560 µF capacitance, and specified ripple current values support inverter and motor drive topologies where regenerative events and voltage fluctuation are common.

Engineers specifying this capacitor will benefit from clear endurance and electrical limits, a snap‑in form factor for robust PCB mounting, and RoHS compliance—helping to simplify BOM decisions and long‑term maintenance planning in industrial and power conversion systems.

Request a quote or contact sales to discuss pricing, lead times and sample availability for LQS2G561MELC40.