LQR2V103MSEJ

The LQR2V103MSEJ is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series, specified at 10000 µF and 350 V. It is a radial can with screw terminals designed for high-speed charge–discharge environments and applications that require robust DC energy storage under fluctuating voltages.

Targeted use cases include regenerative and inverter systems where high ripple currents and repeated charge–discharge cycles occur. The device provides long-term endurance at elevated temperatures and is RoHS compliant.

Key Features

• Capacitance and Voltage — Rated capacitance 10000 µF with a rated voltage of 350 V and capacitance tolerance of ±20% (at 120 Hz, 20 °C).
• Screw Terminal, Radial Can Package — Screw terminal mounting (radial can) for secure electrical and mechanical connections in power electronics assemblies.
• High Ripple Current Capability — Supports ripple currents of 30.2 A at 120 Hz and 42.28 A at 10 kHz, suitable for high-frequency inverter and regenerative circuits.
• Temperature and Endurance — Operating temperature range −25 °C to +85 °C with endurance specified as 5000 hours at 85 °C under rated conditions; after endurance testing capacitance change remains within ±20%, tan δ ≤ 300% of initial, and leakage current remains at or below the initial specified value.
• Charge–Discharge Durability — Series endurance for charge–discharge behavior specified: 20 million cycles (ΔV = rated voltage × 0.3, 3 Hz) at room temperature while meeting capacitance, tan δ, leakage, and appearance criteria.
• Low-Temperature Performance — Documented impedance stability at low temperature with Z(−25 °C) / Z(+20 °C) up to 8 for the LQR series.
• Leakage Current Specification — After 5 minutes at rated voltage, leakage current not more than 3√V (µA) or 5 mA, whichever is smaller (at 20 °C), per series specification.
• RoHS Compliant — Meets the RoHS directive (2011/65/EU, (EU)2015/863).
• Physical Size — Compact radial can dimensions given as L: 13 cm × D: 9 cm with screw-terminal package; height seated maximum 5.118 inch.

Typical Applications

• AC Servo Motor Drives — Handles high-frequency regenerative voltages encountered in servo systems, supporting energy recovery and smoothing DC bus fluctuations.
• General Inverters — Provides bulk energy storage and high ripple-current capability for inverter DC-link circuits used in industrial drives and power conversion.
• Rectifier / Voltage Doubler Circuits — Suitable for rectifier and voltage-doubler topologies where stable DC hold-up and repeated charge–discharge behavior are required.
• Equipment in Voltage-Fluctuating Environments — Designed for systems exposed to variable supply conditions where robust endurance and leakage control are important.

Unique Advantages

• High Energy Storage per Volume: 10,000 µF at 350 V delivers substantial DC storage for applications requiring large bulk capacitance.
• Designed for High-Frequency Stress: Ripple-current ratings at 120 Hz and 10 kHz make it suitable for regenerative and inverter duties with elevated switching frequencies.
• Proven Endurance: 5000 hours at 85 °C and 20 million charge–discharge cycles demonstrate durability for continuous industrial operation.
• Screw-Terminal Reliability: Robust screw-terminal connections simplify integration in power racks and reduce the risk of loose connections in high-current applications.
• Low-Temperature Impedance Control: Specified impedance ratio at −25 °C helps maintain performance in colder operating conditions.
• Regulatory Compliance: RoHS conformity supports environmental and regulatory requirements for modern equipment design.

Why Choose LQR2V103MSEJ?

The LQR2V103MSEJ combines high capacitance, a 350 V rating and screw-terminal packaging to serve demanding power-electronics roles where repeated charge–discharge cycles and high ripple currents are common. Its endurance ratings at 85 °C and documented charge–discharge lifecycle make it a fit for industrial drives, inverters, and other systems that operate under fluctuating voltages.

This part is well suited for engineers and procurement teams specifying bulk DC energy storage with a focus on long-term stability, mechanical reliability, and compliance with RoHS requirements. The LQR series’ documented performance characteristics help reduce qualification uncertainty in power assemblies.

Request a quote or submit a technical inquiry to Nichicon to confirm availability, pricing, lead times and to discuss sample requirements for evaluation in your design.