LQS2V471MELB40

The LQS2V471MELB40 from Nichicon is a snap‑in terminal aluminum electrolytic capacitor designed for high‑speed charge–discharge in power electronics. It delivers 470 µF at 350 V with a polarized radial can, engineered for demanding industrial use cases such as inverters and regenerative motor drives.

Key value comes from its 105°C operating temperature rating, high ripple capability across low and high frequencies, and a 3000‑hour endurance at 105°C under rated conditions—making it suitable for equipment exposed to voltage fluctuations and high‑frequency regenerative voltages.

Key Features

• Capacitance & Voltage — 470 µF rated capacitance at 350 V for bulk energy storage and smoothing in power circuits.
• High‑Temperature Operation — Rated for −25 to +105°C to support elevated ambient environments and heated enclosures.
• High Speed Charge–Discharge — Designed specifically for high speed charge‑discharge performance and suitability for high‑frequency regenerative voltages.
• Ripple Current Capability — Specified ripple handling of 1.4 A at 120 Hz and 2.002 A at 50 kHz to address both low‑ and high‑frequency ripple conditions.
• Endurance — 3000 hours at 105°C under D.C. bias plus rated ripple current with capacitance change within ±20%, tan δ within 200% of initial, and leakage current not exceeding initial specified value.
• Charge–Discharge Durability — Endurance for 50 million charge/discharge cycles (δV = rated voltage + 0.35, 6 Hz) at room temperature with capacitance change within ±20% and controlled tan δ and leakage current.
• Leakage Current Specification — Leakage current guaranteed to meet I ≤ 3√(C·V) µA after 5 minutes’ application of rated voltage at 20°C.
• Mechanical & Mounting — Radial can with snap‑in terminals for robust board retention in power assemblies; nominal size L × D: 4 × 3 cm.
• Environmental Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Inverter and Servo Drives — Handles high‑frequency regenerative voltages and rapid charge/discharge cycles in AC servomotor and general inverter systems.
• Power Rectifiers and Voltage Doublers — Suitable for rectifier circuits and voltage doubler topologies where sustained high voltage and capacitance are required.
• Voltage‑Fluctuating Environments — Designed for equipment operating in areas with unstable line conditions, providing stable filtering and energy buffering.
• General Power Electronics — Bulk smoothing and energy storage for industrial power supplies and converters where high temperature and ripple endurance are needed.

Unique Advantages

• High Temperature Reliability: 105°C rating and 3000‑hour endurance at 105°C provide predictable long‑term performance in hot environments.
• Dual‑Frequency Ripple Performance: Explicit ripple current ratings at both 120 Hz and 50 kHz let designers size capacitors for mixed spectral ripple loads.
• Proven Cycle Endurance: Specification for 50 million charge/discharge cycles supports designs with frequent regenerative events or pulse loading.
• Measurable Leakage Control: Leakage current limited by the I ≤ 3√(C·V) formula after voltage application, simplifying leakage budgeting in designs.
• RoHS Compliance: Conforms to relevant RoHS directives for systems requiring restricted‑substance compliance.
• Robust Mounting: Snap‑in radial can provides secure mechanical retention for high‑vibration or high‑current board assemblies.

Why Choose LQS2V471MELB40?

The LQS2V471MELB40 is positioned for industrial power applications that require high‑voltage bulk capacitance with reliable high‑temperature and high‑cycle endurance. Its combination of 470 µF at 350 V, defined ripple ratings at both low and high frequencies, and validated endurance behavior make it well suited to inverter, motor drive and rectifier designs operating under fluctuating voltages.

Designed and manufactured by Nichicon, this capacitor offers a clear specification set—temperature range, leakage limits, tan δ, and endurance metrics—that supports engineering decisions for robust, long‑life power systems while maintaining environmental compliance.

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