LQR2V682MSEH

The LQR2V682MSEH is a screw-terminal aluminum electrolytic capacitor designed for high-frequency regenerative and fluctuating-voltage environments. It combines a large capacitance (6.8 mF / 6800 µF) with a 350 V rating and a screw-terminal radial can package to support power-electronic applications that require robust bulk energy storage and reliable electrical connections.

Engineered for industrial power circuits, this capacitor targets inverter and motor-drive systems where high ripple handling, charge–discharge endurance and operation across a wide temperature range are required.

Key Features

• Capacitance & Rated Voltage — 6.8 mF (6800 µF) nominal capacitance with a 350 V rated voltage, suitable for bulk energy storage in high-voltage power stages.
• Screw-Terminal Package — Radial can with screw terminals for secure, low-impedance power connections; suitable for heavy-current power assemblies.
• Operating Temperature & Lifetime — Rated for −25 °C to +85 °C with an endurance specification of 5000 hours at 85 °C.
• High-Frequency Performance — Specified for high-speed charge–discharge and applications such as regenerative voltage in AC servomotors and general inverters.
• Ripple Current Capability — 22.9 A at 120 Hz and 32.06 A at 100 kHz, enabling handling of substantial AC ripple in rectifier and inverter circuits.
• Endurance of Charge–Discharge Behavior — Qualified for 20 million charge–discharge cycles (ΔV = rated voltage × 0.3, 3 Hz) at room temperature while meeting specified electrical characteristics.
• Leakage Current Specification — After 5 minutes’ application of rated voltage, leakage current is ≤ 3√(V) μA or 5 mA, whichever is smaller (measured at 20 °C).
• Low-Temperature Stability — Impedance ratio Z(−25 °C) / Z(+20 °C) ≤ 8, maintaining usable performance in temperature-fluctuating environments.
• Polarized with ±20% Tolerance — Polarized device with capacitance tolerance of −20% to +20% at 120 Hz, 20 °C.
• RoHS Compliant — Conforms to RoHS directive (2011/65/EU, (EU)2015/863).
• Physical Size — Length 13.0 cm × Diameter 7.62 cm, packaged for robust mounting in power assemblies.

Typical Applications

• AC Servo Drives — Supports high-frequency regenerative voltages common in AC servomotor drives where quick charge–discharge behavior is required.
• General Inverters and Motor Control — Bulk smoothing and energy buffering in inverter DC-link circuits and motor-drive power stages subject to voltage fluctuation.
• Voltage-Doubler Rectifier Circuits — Suitable for rectifier circuits that use doubler topologies, providing the required capacitance and voltage handling.
• Industrial Power Electronics — Use in equipment operating in areas with fluctuating supply voltages where endurance and ripple capability are important.

Unique Advantages

• High energy capacity at elevated voltage — 6800 µF at 350 V supplies substantial bulk capacitance for DC-link and regenerative energy storage needs.
• Designed for high ripple and high-frequency duty — Specified ripple currents at both 120 Hz and 100 kHz, and explicit suitability for high-speed charge–discharge cycles, make it appropriate for demanding power-electronic environments.
• Proven thermal endurance — 5000 hours at 85 °C endurance rating supports long-term operation in hot industrial enclosures.
• Charge–discharge durability — Tested for 20 million cycles under defined ΔV and frequency, providing predictable behavior in frequent energy-exchange applications.
• Screw-terminal construction for reliable connections — Radial can with screw terminals simplifies installation and provides secure mechanical and electrical attachment for high-current paths.
• Measurable leakage and stability metrics — Clear leakage current limits and low-temperature impedance ratio help designers verify performance against system requirements.

Why Choose LQR2V682MSEH?

The LQR2V682MSEH positions itself where high-voltage bulk energy storage, high ripple capability and charge–discharge endurance are required. Its screw-terminal radial can package and defined electrical endurance make it suitable for engineers designing inverters, servo drives and industrial power systems that experience voltage fluctuation and frequent regenerative events.

With explicit specifications for ripple current, leakage, low-temperature stability and long-term endurance at elevated temperature, this capacitor supports robust, verifiable designs and predictable lifecycle behavior backed by Nichicon's LQR series data.

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