LQR2G272MSEG

The LQR2G272MSEG from Nichicon is an aluminum electrolytic capacitor in a screw‑terminal radial can designed for high‑speed charge–discharge applications. It is a 2.7 mF, 400 V polarized capacitor built for industrial power electronics where regenerative voltages and fluctuating supply conditions are encountered.

Engineered for use in high‑frequency regenerative circuits, general inverters and AC servomotor systems, this RoHS‑compliant capacitor delivers high ripple handling, defined ESR characteristics and long endurance at elevated temperatures.

Key Features

• Capacitance & Rated Voltage — 2.7 mF nominal capacitance with a 400 V rated voltage and capacitance tolerance of −20% to +20%.
• Screw‑Terminal Radial Can — Screw terminal mounting for robust electrical connection and secure mechanical installation in power assemblies.
• High‑speed Charge–Discharge Design — Designed for rapid charge–discharge cycles; datasheet specifies endurance under charge–discharge testing (20 million cycles at defined ΔV and cycle rate).
• Ripple Current Performance — Rated ripple current of 11.5 A at 120 Hz and 16.1 A at 10 kHz for demanding AC and high‑frequency environments.
• ESR — Equivalent series resistance of 150 mΩ measured at 120 Hz, supporting effective energy transfer in power applications.
• Operating Temperature & Lifetime — Specified operating range of −25 °C to +85 °C with a rated lifetime of 5000 hours at 85 °C under DC bias plus rated ripple current.
• Low‑temperature Impedance Stability — Impedance stability characterized to −25 °C with Z(−25 °C)/Z(+20 °C) ratio of 8, supporting operation in voltage‑varying environments.
• RoHS Compliance — Compliant to the RoHS directive (2011/65/EU, (EU)2015/863).
• Physical Size — Compact radial can form factor with dimensions L: 9 × D: 6.35 cm for panel or chassis mounting with brackets and bolts.

Typical Applications

• Industrial Drives & Servomotors — Handles high‑frequency regenerative voltages in AC servomotor regenerative circuits to support energy recovery and smoothing.
• General Inverters — Suited for inverter DC link and filtering where fluctuating supply voltages and rapid charge–discharge events occur.
• Voltage Doubler Rectifier Circuits — Designed for use in rectifier circuits employing voltage doubler topologies where high DC voltage and reliability are required.
• Equipment in Voltage‑Fluctuating Areas — Built to withstand environments with frequent voltage variation, backed by defined endurance and ripple handling specifications.

Unique Advantages

• High ripple current capability: 11.5 A at 120 Hz and 16.1 A at 10 kHz reduce thermal stress in high‑frequency power circuits and improve energy handling.
• Designed for rapid charge–discharge: Specified endurance for charge–discharge behavior (20 million cycles under defined test conditions) supports applications with frequent energy cycling.
• Defined high‑temperature lifetime: 5000 hours at 85 °C under DC bias and rated ripple current provides predictable service life for hot‑running systems.
• Screw‑terminal mounting: Robust electrical and mechanical connection suitable for industrial assemblies and easier field serviceability.
• Low‑temperature impedance characterization: Documented impedance ratio to −25 °C gives engineers data to assess performance in colder operating conditions.
• Regulatory compliance: RoHS compliance ensures the part meets current restricted‑substance requirements for many markets.

Why Choose LQR2G272MSEG?

The LQR2G272MSEG positions itself as a purpose‑built capacitor for industrial power electronics where high voltage, frequent charge–discharge cycles and elevated ripple currents are common. With a 400 V rating, 2.7 mF capacitance, defined ESR and ripple current specifications, and a 5000‑hour high‑temperature lifetime, it provides designers with measurable electrical and endurance characteristics to base reliability assessments on.

This Nichicon screw‑terminal capacitor is appropriate for engineers specifying components for regenerative drive systems, inverters, and rectifier circuits that demand documented performance under fluctuating voltages and repetitive energy cycling. Its RoHS compliance and mechanical screw‑terminal package simplify integration into regulated, serviceable industrial equipment.

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