LQR2G182MSEFBB

The LQR2G182MSEFBB is an aluminum electrolytic capacitor in a screw-terminal, radial can package designed for high-speed charge–discharge environments. With a rated capacitance of 1800 µF and a 400 V rating, it targets power-electronic applications that demand robust energy storage and reliable transient handling.

Engineered for use in regenerative and inverter systems, this capacitor combines high ripple-current capability, low ESR at power frequencies, and proven endurance at elevated temperatures to support equipment exposed to fluctuating voltages and frequent charge–discharge cycles.

Key Features

• Capacitance and Voltage — 1800 µF nominal capacitance at a 400 V rated voltage, with capacitance tolerance of ±20%.
• Screw Terminal Package — Radial can with screw terminals for secure, low-inductance connections suited to power assemblies and easy field wiring.
• High-Speed Charge–Discharge Capability — Designed for high-speed charge–discharge behavior and suited for high-frequency regenerative voltages used in AC servomotors and inverters.
• Ripple Current Performance — Rated ripple current of 9.1 A at 120 Hz and 12.74 A at 10 kHz, enabling effective handling of both low- and higher-frequency ripple in power systems.
• Equivalent Series Resistance (ESR) — 150 mOhm measured at 120 Hz, delivering predictable power dissipation characteristics for thermal and ripple-current design.
• Operating Temperature and Endurance — Rated for operation from −25 °C to +85 °C with a specified lifetime of 5000 hours at 85 °C; endurance tests include 20 million charge–discharge cycles per series specification.
• Leakage Current and Stability — Leakage current specification per series: after 5 minutes at rated voltage not more than 3√(V) µA or 5 mA (whichever is smaller); capacitance and loss-angle stability conform to series endurance limits.
• RoHS Compliance — Compliant with RoHS directive (2011/65/EU,(EU)2015/863).
• Physical Dimensions — Compact radial can footprint with nominal size L: 9 cm × D: 5.1 cm suitable for strapped or bracket-mounted power modules.

Typical Applications

• AC Servomotor Regeneration — Energy buffering and high-speed discharge for regenerative voltage handling in servo drives.
• General Inverters — DC link and smoothing capacitor in inverter modules subject to fluctuating DC bus voltages.
• Voltage-Doubler Rectifier Circuits — Suitable for rectifier and voltage-doubler circuits requiring large capacitance at high DC voltages.
• Equipment in Fluctuating Voltage Environments — Robust performance where supply voltage varies or where frequent transient energy transfer is required.

Unique Advantages

• High Energy Storage at High Voltage — 1800 µF at 400 V provides substantial energy density for DC bus and buffer applications without requiring series stacking.
• Designed for Repetitive Charge–Discharge — Series-qualified endurance (20 million cycles test) supports designs with frequent regenerative events and tight cycle-count requirements.
• Clear Thermal and Lifetime Targets — 5000-hour rating at 85 °C gives designers a measurable baseline for thermal management and lifetime planning.
• Screw-Terminal Robustness — Mechanical and electrical stability of screw terminals simplifies integration into power racks and field-replaceable modules.
• Predictable ESR and Ripple Handling — 150 mOhm ESR at 120 Hz and specified ripple currents at 120 Hz and 10 kHz enable accurate loss and thermal calculations for system design.
• Regulatory Compatibility — RoHS compliance supports deployment in regions requiring restricted-substance conformity.

Why Choose LQR2G182MSEFBB?

LQR2G182MSEFBB is positioned for power-electronics designs that require a high-voltage aluminum electrolytic capacitor with proven endurance under high-speed charge–discharge conditions. Its combination of 400 V rating, substantial capacitance, defined ESR, and ripple-current specifications make it well suited to inverter, servo drive, and rectifier applications where predictable energy handling and thermal behavior matter.

This component is ideal for engineers specifying DC link or regenerative energy-storage capacitors in systems exposed to voltage fluctuation and frequent transient events. The clear lifetime and endurance data help planners assess long-term reliability and maintenance intervals while RoHS compliance supports regulatory requirements.

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