LQR2V103MSEH

The LQR2V103MSEH is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series, rated at 10,000 µF and 350 V with a -25 °C to +85 °C operating range. It is a radial can, polarized device designed for high-speed charge–discharge applications.

Intended for power conversion and regeneration environments, the LQR2V103MSEH is suited for AC servomotor regenerative voltage, general inverters, voltage-doubler rectifier circuits and equipment operating in fluctuating-voltage areas. Its specification set emphasizes ripple-handling, endurance and reliable long-term performance under elevated temperature stress.

Key Features

• High Capacitance and Voltage — 10,000 µF nominal capacitance at a 350 V rated voltage provides substantial energy storage for power conversion and filtering applications.
• High Ripple Current Capability — Rated ripple current of 31.1 A at 120 Hz and 43.54 A at 10 kHz supports demanding regenerative and high-frequency inverter loads.
• Robust Endurance — Endurance specified for 5,000 hours at 85 °C under DC bias plus rated ripple current, with capacitance change within ±20% and leakage current meeting initial specifications after test.
• Charge–Discharge Durability — Designed to endure repetitive charge–discharge cycling (20 million cycles at ΔV = rated × 0.3, 3 Hz) with maintained electrical characteristics and appearance.
• Polarized, Screw-Terminal Package — Radial can with screw terminals for secure electrical connections and robust mounting in power assemblies.
• Wide Ambient Range — Operational from -25 °C to +85 °C with defined low-temperature impedance behavior (Z(-25 °C)/Z(+20 °C) ≤ 8).
• RoHS Compliant — Meets applicable RoHS directives as indicated in the product documentation.

Typical Applications

• AC Servomotor Drives — Energy buffering and handling of high-frequency regenerative voltages in servo systems.
• General Inverters — Bulk filtering and ripple management for inverter DC-link and power conversion stages.
• Voltage-Doubler Rectifier Circuits — Smoothing and energy storage for rectifier topologies that require large capacitance at high voltage.
• Equipment in Fluctuating-Voltage Environments — Stabilization and transient energy supply where supply voltage varies.

Unique Advantages

• Large energy storage at high voltage: 10,000 µF at 350 V delivers significant charge capacity for DC-link and smoothing roles, reducing the need for parallel components.
• High ripple tolerance across frequencies: Specified ripple currents at 120 Hz and 10 kHz enable reliable performance in both mains-rectified and high-frequency inverter conditions.
• Engineered for repeated charge–discharge cycles: Rated for 20 million charge–discharge cycles under the specified test conditions, supporting long service life in regenerative applications.
• Endurance under elevated temperature: 5,000-hour endurance at 85 °C with controlled limits on capacitance change, tan δ and leakage current for predictable aging characteristics.
• Screw-terminal reliability: Radial can with screw terminals provides secure, low-resistance connections suitable for power modules and field serviceability.
• Regulatory conformity: RoHS compliance supports deployment in regions with restricted substances requirements.

Why Choose LQR2V103MSEH?

The LQR2V103MSEH is positioned for power-electronics designs that require large capacitance at high voltage with proven ripple and cycling endurance. Its combination of 10,000 µF capacitance, 350 V rating, robust ripple-current specifications and long-term endurance at 85 °C makes it a practical choice for inverter, servo drive and rectifier applications operating in fluctuating-voltage environments.

Engineers specifying this capacitor benefit from predictable aging and test-backed durability for demanding charge–discharge and regenerative conditions, supported by Nichicon’s LQR series technical documentation.

Request a quote or contact sales to discuss availability, lead times and how the LQR2V103MSEH can be integrated into your power system design.