LQR2G472MSEHBB

The LQR2G472MSEHBB from Nichicon is a screw‑terminal, aluminum electrolytic capacitor in the LQR series designed for high‑speed charge/discharge and high‑frequency regenerative voltage environments. It delivers 4.7 mF (4700 µF) capacitance at a 400 V rating with a polarized radial can package and screw terminals for secure power connections.

Engineered for industrial power electronics, this capacitor targets applications such as AC servomotor drives, general inverters, voltage‑fluctuating equipment and rectifier circuits (including voltage doubler configurations). Key value comes from its high ripple handling, controlled ESR and a 5000‑hour endurance at 85 °C.

Key Features

• Electrical Characteristics — 4700 µF nominal capacitance at 400 V with ±20% tolerance; tangent of loss angle (tan δ) specified at 0.15 (measurement conditions at 120 Hz, 20 °C).
• High Ripple Capability — Rated ripple current 18.3 A at 120 Hz and 25.62 A at 10 kHz, supporting heavy AC ripple and fast charge/discharge cycles.
• Low Equivalent Series Resistance (ESR) — ESR of 150 mΩ at 120 Hz, enabling efficient energy transfer and reduced heating under ripple load.
• Durability & Endurance — 5000 hours endurance at 85 °C under DC bias plus rated ripple current; performance limits include capacitance change within ±20%, tan δ up to 300% of initial specified value, and leakage current at or below initial specified value after endurance test.
• Operating Environment — Rated for −25 °C to +85 °C ambient operation and compliant with RoHS (2011/65/EU, (EU)2015/863).
• Mechanical & Mounting — Radial can with screw terminals for robust electrical and mechanical connections; physical size listed as φ76.2 × 110 mm (L: 11 × D: 7.62 cm) and supplied in cardboard packing for production handling.
• Leakage Current Specification — After 5 minutes at rated voltage, leakage current does not exceed 3√(√V) µA or 5 mA, whichever is smaller (as defined in the product datasheet).

Typical Applications

• AC Servo Drives — Handles high‑frequency regenerative voltage and rapid charge/discharge cycles common in servo motor power stages.
• Inverters and Motor Controllers — Supports general inverter DC‑link and energy buffering in motor control systems where voltage fluctuation and high ripple currents occur.
• Rectifier / Voltage Doubler Circuits — Suited for rectifier circuits and voltage‑doubler topologies that demand stable capacitance and endurance under fluctuating voltages.
• Industrial Power Supplies — Provides bulk energy storage and smoothing in industrial supplies requiring long life at elevated ambient temperatures and sustained ripple currents.

Unique Advantages

• High Energy & Voltage Capability: 4700 µF at 400 V supplies substantial DC energy storage for demanding power electronics designs.
• Designed for High Frequency Regeneration: Specified ripple currents at 120 Hz and 10 kHz make this part effective where fast charge/discharge and regenerative energy flows occur.
• Proven Endurance: 5000 hours at 85 °C with defined post‑test limits for capacitance, tan δ and leakage current, supporting predictable long‑term behavior.
• Robust Termination: Screw terminal radial can package enables reliable, low‑resistance connections suitable for high current installations.
• Controlled ESR: 150 mΩ ESR at 120 Hz reduces internal heating and improves system efficiency under ripple loading.
• Regulatory Compliance: RoHS compliant for straightforward integration into regulated manufacturing environments.

Why Choose LQR2G472MSEHBB?

The LQR2G472MSEHBB positions itself as a robust energy‑storage and smoothing component for industrial power electronics where high voltage, high ripple current and reliable endurance at elevated temperatures are required. Its screw‑terminal can package and controlled ESR make it suitable for heavy‑duty DC‑link and regenerative applications such as servo drives, inverters and rectifier stages.

This capacitor is well suited to design teams and procurement professionals building or maintaining industrial motor controls, inverter systems and power supplies who need verifiable electrical performance, long‑term endurance data and RoHS compliance from a mass‑production part in the Nichicon LQR series.

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