LQR2G822MSEJ

The LQR2G822MSEJ is a screw-terminal aluminum electrolytic capacitor designed for power electronics applications requiring high-voltage energy storage and rapid charge‑discharge capability. As part of Nichicon’s LQR series, this polarized, radial can capacitor is optimized for applications such as regenerative voltage handling and inverter/rectifier circuits where stable performance under fluctuating voltages is required.

With a rated capacitance of 8200 µF at 400 V, a wide operating temperature range from −25 °C to +85 °C, and robust endurance specifications, the LQR2G822MSEJ delivers proven reliability for industrial power systems and general-purpose high-voltage designs.

Key Features

• High Capacitance / Voltage: 8200 µF nominal capacitance at a 400 V rating provides bulk energy storage for high-voltage DC links and smoothing in inverter and rectifier circuits.
• Screw Terminal Mounting: Radial can with screw terminals enables secure, low-resistance connections suitable for high-current power assemblies.
• High Ripple Current Capability: Rated ripple current of 27.8 A at 120 Hz and 38.92 A at 10 kHz supports demanding AC and high-frequency regenerative currents.
• Wide Temperature Range: Specified operation from −25 °C to +85 °C for use in environments with moderate temperature variation.
• Endurance and Charge‑Discharge Durability: Endurance rated to 5000 hours at 85 °C with DC bias plus rated ripple current; charge‑discharge endurance specified to 20 million cycles at room temperature (ΔV = rated voltage × 0.3, 3 Hz).
• Stability and Leakage: Capacitance tolerance ±20%; leakage current limited by the series specification (after 5 minutes ≤ 3√V µA or 5 mA, whichever is smaller), and low‑temperature impedance behavior defined (Z at −25 °C / Z at +20 °C ≤ 8).
• RoHS Compliance: Conforms to RoHS directive (2011/65/EU,(EU)2015/863).
• Physical Size: Compact radial can package with approximate dimensions L: 13 cm × D: 9 cm, designed for secure mounting with screw terminals and brackets.

Typical Applications

• Industrial Drives and Servo Systems: Energy buffering and regenerative voltage handling for AC servomotor drives and motor control inverters.
• General Inverters: DC link and smoothing capacitor in general-purpose inverter designs subject to fluctuating supply or regenerative currents.
• Rectifier / Voltage Doubler Circuits: Bulk storage and smoothing in rectifier stages, including voltage-doubler topologies.
• Power Conditioning Equipment: Systems requiring high ripple handling and long endurance under continuous DC bias and ripple loading.

Unique Advantages

• Designed for Regenerative Duty: Specified for high-frequency regenerative voltages encountered in servo and inverter applications, enabling reliable energy recovery handling.
• High Ripple and Frequency Performance: Dual ripple-current ratings (120 Hz and 10 kHz) provide clear guidance for designs across low and high-frequency domains.
• Proven Endurance Under Load: 5000 hours endurance at 85 °C under DC bias plus rated ripple current offers predictable lifetime behavior in demanding power systems.
• Charge‑Discharge Robustness: Qualified for 20 million charge‑discharge cycles at defined conditions, supporting applications with frequent energy cycling.
• Defined Low-Temperature Behavior: Impedance ratio specification (Z(−25 °C)/Z(+20 °C) ≤ 8) helps designers account for cold-start and low-temperature performance.
• Regulatory Compliance: RoHS conformity simplifies material compliance for equipment manufacturers.

Why Choose LQR2G822MSEJ?

The LQR2G822MSEJ positions itself as a durable, high-capacitance solution for power-electronics designs that demand reliable DC energy storage, high ripple tolerance, and robust charge‑discharge endurance. Its screw-terminal, radial-can construction supports secure, low-impedance connections in industrial inverters, motor drives, and rectifier circuits where voltage fluctuations and regenerative events are common.

This capacitor is well suited to engineers and procurement teams designing or servicing industrial power equipment who need clear, verifiable specifications for capacitance, voltage rating, ripple handling, temperature range, and endurance. The defined performance metrics and RoHS compliance help reduce design uncertainty and support long-term system reliability.

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