LQR2V472MSEHBB

The LQR2V472MSEHBB is a screw‑terminal aluminum electrolytic capacitor from Nichicon’s LQR series, delivering 4.7 mF (4700 µF) at a 350 V rated voltage in a radial can with screw terminals. It is designed for high‑speed charge–discharge and high‑frequency regenerative voltage applications.

Typical markets and use cases include AC servomotor regenerative systems, general inverters, rectifier circuits such as voltage doublers, and equipment exposed to fluctuating line voltages. The device combines high capacitance and voltage rating with elevated ripple handling and endurance for demanding power‑conversion environments.

Key Features

• Core electrical specification — 4.7 mF (4700 µF) nominal capacitance with a 350 V rated voltage and ±20% tolerance at 120 Hz, 20°C.
• High ripple current capability — Rated ripple current: 16.4 A at 120 Hz and 22.96 A at 10 kHz, supporting high‑frequency and high‑current applications.
• Operating temperature and lifetime — Rated for −25°C to +85°C with endurance specified as 5000 hours at 85°C under DC bias plus rated ripple current.
• Endurance and charge‑discharge robustness — Meets endurance criteria after 5000 hours at 85°C (capacitance change within ±20%, tan δ ≤ 300% of initial, leakage ≤ initial spec); also specified for 20 million charge–discharge cycles (ΔV = rated × 0.3, 3 Hz) at room temperature with the same limits.
• Leakage and low‑temperature behavior — Leakage current after 5 minutes at rated voltage is limited to 3√V µA or 5 mA, whichever is smaller (at 20°C); impedance ratio Z(−25°C)/Z(+20°C) ≤ 8.
• Mechanical and mounting — Radial can with screw terminals for secure electrical connection; nominal package size L: 9 × D: 7.62 cm and a polar configuration.
• Regulatory compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servo drives and regenerative systems — Provides bulk energy storage and high‑frequency charge/discharge capability suited to regenerative voltage handling in motor drives.
• General inverters — Used in inverter DC‑link and smoothing stages where high voltage and elevated ripple handling are required.
• Rectifier and voltage doubler circuits — Applicable for rectifier circuits, including voltage doubler topologies, where large capacitance at high voltage is needed.
• Equipment in fluctuating‑voltage environments — Selected for systems exposed to variable line conditions where robust voltage endurance and long operating life are important.

Unique Advantages

• High‑voltage bulk capacitance: 4.7 mF at 350 V supplies substantial energy storage for power conversion and buffering.
• Designed for high‑frequency operation: Ripple current ratings specified at both 120 Hz and 10 kHz match the needs of high‑speed charge/discharge and regenerative applications.
• Long endurance under load: Endurance defined at 5000 hours at 85°C under DC bias plus rated ripple current gives a clear, tested lifetime metric for design planning.
• Charge‑discharge durability: Specified to withstand 20 million charge–discharge cycles (ΔV = 0.3 × rated, 3 Hz) while maintaining capacitance, tan δ and leakage within defined limits.
• RoHS compliant: Meets RoHS (2011/65/EU, (EU)2015/863) requirements for restricted substances.
• Secure screw‑terminal mounting: Radial can with screw terminals supports reliable connections for high‑current power applications.

Why Choose LQR2V472MSEHBB?

The LQR2V472MSEHBB positions itself as a high‑voltage, high‑capacitance electrolytic solution tailored for power‑conversion systems that require durable bulk energy storage and robust ripple handling. Its combination of 350 V rating, 4700 µF capacitance and specified ripple performance at both low and high frequencies makes it suitable for inverter DC links, regenerative braking circuits, and rectifier stages.

Engineers specifying this part gain deterministic endurance and charge‑discharge behavior (5000 hours at 85°C and 20 million cycles respectively), clear leakage limits, and RoHS compliance—features that support long‑term reliability planning and regulatory alignment for industrial power electronics designs.

Request a quote or contact sales to discuss pricing, availability and how the LQR2V472MSEHBB can fit your power‑electronics design requirements.