LQR2V392MSEHBN

The LQR2V392MSEHBN is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series, specified at 3.9 mF (3900 µF) and rated for 350 V. It is engineered for high-speed charge–discharge environments and energy buffering in power conversion systems.

Designed for applications such as high-frequency regenerative voltage in AC servomotors and general inverters, this capacitor targets equipment exposed to voltage fluctuation and rectifier circuits including voltage doublers. It is RoHS compliant and built for robust performance across a −25 °C to +85 °C operating range.

Key Features

• Capacitance & Voltage — 3.9 mF (3900 µF) nominal capacitance at a 350 V rated voltage for bulk energy storage and smoothing in high-voltage DC buses.
• Screw Terminal Package — Radial can with screw terminals for secure, low-impedance connections and ease of installation or service in power racks and drive cabinets.
• High-speed charge–discharge — Specified for high-speed charge–discharge behavior and suited to high-frequency regenerative voltages used in servo and inverter systems.
• Ripple Current Capability — Rated ripple current: 14.1 A at 120 Hz and 19.74 A at 10 kHz, supporting both low- and high-frequency ripple handling in converter applications.
• Temperature & Endurance — Operating range −25 °C to +85 °C with endurance performance specified for 5000 hours at 85 °C under DC bias plus rated ripple current.
• Leakage Current Specification — Leakage current limited to not more than 3·√(V) µA or 5 mA (whichever is smaller) after 5 minutes at 20 °C, per datasheet guidance.
• Low-temperature Stability — Impedance ratio Z(−25 °C)/Z(+20 °C) rated to a maximum of 8, supporting operation where lower-temperature impedance rise is a factor.
• Construction & Dimensions — Radial, can-style capacitor with screw terminals; physical size approximately L: 8.0 cm × D: 7.62 cm to fit power electronics enclosures.
• Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servomotor Drives — Used for high-frequency regenerative voltage handling and energy buffering in servo drive DC links.
• Inverters and Motor Drives — Provides bulk capacitance and ripple handling in general inverter front-ends and motor control power stages.
• Voltage Doubler Rectifiers — Suited for rectifier circuits where voltage-doubler topologies require robust DC-link capacitance.
• Equipment in Voltage-fluctuating Areas — Energy reservoir and transient absorption for equipment exposed to unstable supply conditions.

Unique Advantages

• High energy density at high voltage — 3.9 mF at 350 V provides substantial DC-link energy storage for power conversion systems.
• Designed for regenerative loads — High-speed charge–discharge endurance and specified charge–discharge behavior make it suitable for regenerative and cyclic power applications.
• Robust ripple handling — Dual ripple current specifications at 120 Hz and 10 kHz enable use across low- and high-frequency converter designs.
• Service-friendly termination — Screw terminals simplify installation, maintenance, and replacement in industrial power assemblies.
• Validated endurance — Endurance specified at 5000 hours at 85 °C under rated conditions, supporting long-term reliability in continuous-duty systems.
• Regulatory compliance — RoHS compliance supports use in designs targeted for regulated markets requiring restricted substances conformance.

Why Choose LQR2V392MSEHBN?

The LQR2V392MSEHBN positions itself as a purpose-built DC-link capacitor for power conversion applications that demand high voltage, significant capacitance, and reliable charge–discharge endurance. Its screw-terminal can package and ripple specifications make it a practical choice for inverter, servo, and regenerative power systems where secure connections and sustained ripple performance are required.

Manufactured by Nichicon and backed by datasheet-validated endurance, leakage, and low-temperature impedance specifications, this capacitor is suitable for engineers designing robust power electronics who need clear, verifiable device characteristics for long-term deployment.

Request a quote or submit a sourcing inquiry for LQR2V392MSEHBN to evaluate its fit in your power-electronics design and to obtain pricing and availability information.