LQR2G103MSEJBB

The LQR2G103MSEJBB is an aluminum electrolytic capacitor in a screw-terminal radial can designed for high-speed charge–discharge applications. It delivers 10,000 µF at 400 V with a polarized design and is part of Nichicon’s LQR series optimized for power electronics.

This part is suited for high-frequency regenerative voltage environments such as AC servomotor drives and general inverters, and for rectifier circuits including voltage doublers. It offers high ripple handling and long-term endurance for equipment operating in voltage-fluctuating areas.

Key Features

• Capacitance & Rated Voltage — 10,000 µF nominal capacitance at 400 V DC, with a capacitance tolerance of ±20% (measured at 120 Hz, 20°C).
• High-speed charge–discharge design — Engineered for rapid charge and discharge behavior, suited to high-frequency regenerative circuits.
• High ripple current capability — Rated ripple current of 32.7 A at 120 Hz and 45.78 A at 10 kHz for improved handling of AC ripple in power conversion systems.
• Endurance & lifetime — Specified endurance of 5,000 hours at 85°C under rated conditions; additionally qualified for charge–discharge endurance of 20 million cycles at room temperature (ΔV = rated voltage × 0.3, 3 Hz).
• Operating temperature range — −25°C to +85°C for reliable operation across common industrial environments.
• Mounting & package — Screw terminal radial can package for secure power connections and robust mechanical mounting.
• Leakage current specification — After 5 minutes’ application of rated voltage, leakage current is not more than 3√(√V) µA or 5 mA, whichever is smaller (at 20°C).
• Low-temperature stability — Impedance ratio Z(−25°C)/Z(+20°C) specified with a maximum of 8 for predictable performance in cooler conditions.
• RoHS compliant — Conforms to the RoHS Directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor regenerative circuits — Supports high-frequency regenerative voltage handling for motor drive energy recovery.
• General inverters — Bulk energy storage and ripple management in inverter DC-link and power conversion stages.
• Rectifier circuits (voltage doubler) — Suitable for rectifier and voltage-doubler topologies requiring high DC capacitance at elevated voltages.
• Equipment in fluctuating-voltage environments — Designed for systems exposed to variable input voltages where robust charge–discharge performance is required.

Unique Advantages

• High bulk energy capacity: 10,000 µF at 400 V provides substantial DC-link and energy-storage capability for power electronic systems.
• Designed for high-frequency operation: Specified ripple currents at both 120 Hz and 10 kHz make it suitable for regenerative and switching environments.
• Proven endurance: 5,000 hours at 85°C endurance rating and 20 million charge–discharge cycles at room temperature support long-term reliability under demanding use.
• Robust screw-terminal connection: Radial can with screw terminals enables secure, low-resistance power connections for high-current applications.
• Predictable electrical behavior: Defined leakage current limits and impedance stability at low temperature help designers size and verify power systems.
• Regulatory readiness: RoHS compliance simplifies selection for regulated markets.

Why Choose LQR2G103MSEJBB?

The LQR2G103MSEJBB from Nichicon’s LQR series combines high capacitance, elevated voltage rating, and design optimizations for high-speed charge–discharge duty. It is positioned for power-electronics designers who need reliable bulk energy storage and ripple handling in regenerative drives, inverters, and rectifier circuits.

With defined endurance at 85°C, charge–discharge cycle qualifications, and explicit ripple current specifications, this capacitor supports designs where predictable long-term performance and stable electrical characteristics are required.

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