LQR2V392MSEGBN

The LQR2V392MSEGBN is a screw‑terminal aluminum electrolytic capacitor in Nichicon’s LQR series, offering 3.9 mF (3900 µF) capacitance at a 350 V rating. It is designed for high‑frequency regenerative voltages and fluctuating supply environments, providing energy buffering and smoothing in demanding power electronics.

Targeted at industrial power systems, the LQR2V392MSEGBN is suited for applications such as AC servomotor regenerative circuits, general inverters, and rectifier stages including voltage doubler configurations where high ripple handling and robust endurance are required.

Key Features

• Electrical Performance — 3.9 mF (3900 µF) capacitance with a 350 V rated voltage and ±20% tolerance, providing substantial energy storage for power conversion and regeneration circuits.
• High Ripple Current Capability — Rated ripple current of 14.6 A at 120 Hz and 20.44 A at 10 kHz to handle both low‑ and high‑frequency ripple in inverter and motor drive environments.
• Temperature & Endurance — Operating temperature range from −25 °C to +85 °C with endurance specified as 5000 hours at 85 °C under D.C. bias plus rated ripple current.
• Charge‑Discharge Durability — Specified endurance for charge‑discharge behavior: 20 million cycles (ΔV = rated × 0.3, 3 Hz) at room temperature with limits on capacitance change, tan δ, leakage current, and appearance.
• Mounting & Package — Screw terminal, radial can package for secure bolted connections; package case described as "Radial, Can - Screw Terminals" with physical dimensions L: 11 × D: 6.35 cm and a seated height up to 4.331 inch.
• Leakage & Loss Characteristics — Leakage current specification after 5 minutes: not more than 3√(C)√(V) µA or 5 mA (whichever is smaller) at 20 °C; tan δ measurement available per datasheet (120 Hz, 20 °C).
• Polarized Design — Polarized aluminum electrolytic construction for DC energy storage and smoothing in power circuits.
• RoHS Compliance — Compliant with RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Motor Drives and Regeneration — Used for high‑frequency regenerative voltage buffering in AC servomotor systems to absorb and return energy during braking and dynamic load changes.
• Inverters and Power Conversion — Serves as bulk energy storage and ripple suppression in general inverters and variable‑frequency drives operating with fluctuating voltages.
• Rectifier and Voltage Doubler Circuits — Suitable for rectifier stages, including voltage doubler arrangements, where high DC voltage rating and endurance are required.
• Industrial Equipment in Variable Voltage Environments — Provides stable capacitance and ripple handling for equipment exposed to voltage fluctuation and high charge‑discharge cycles.

Unique Advantages

• High Voltage Handling: 350 V rated voltage supports higher DC link and rectifier topologies common in industrial power systems.
• Substantial Energy Storage: 3.9 mF (3900 µF) capacitance offers significant bulk storage for smoothing and regenerative energy capture.
• Robust Ripple Performance: Specified ripple currents at both 120 Hz and 10 kHz enable reliable operation across low and high frequency ripple conditions.
• Proven Endurance: 5000 hours at 85 °C under rated conditions and defined 20 million charge‑discharge cycles demonstrate long‑term stability for repetitive duty cycles.
• Screw‑Terminal Package: Radial can with screw terminals provides secure, low‑impedance connections suitable for industrial wiring and bolted busbar interfaces.
• Regulatory Compliance: RoHS conformity for use in regions requiring restricted substances compliance.

Why Choose LQR2V392MSEGBN?

The LQR2V392MSEGBN combines high capacitance and a 350 V rating with screw‑terminal packaging and defined ripple/endurance specifications, delivering a dependable energy storage solution for industrial power electronics. Its datasheet‑specified performance targets designers who require predictable ripple handling, long‑term thermal endurance, and charge‑discharge robustness.

This part is well suited for OEMs and engineers designing motor drives, inverters, rectifiers, and other industrial power systems that operate under fluctuating voltages and demanding cycle profiles. Backed by the LQR series specifications from Nichicon, it provides transparent, verifiable characteristics for integration into critical power designs.

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