LQR2G182MSEF

The LQR2G182MSEF from Nichicon is a screw‑terminal aluminum electrolytic capacitor in the LQR series, rated 1.8 mF (1800 µF) at 400 V with ±20% tolerance. Designed for general purpose power electronics, it targets applications with high-frequency charge/discharge and fluctuating voltages, such as inverter and servo systems.

Key value propositions include high ripple handling, long endurance at elevated temperature, and a robust screw‑terminal can package that simplifies installation and high-current connections.

Key Features

• Capacitance & Voltage: 1.8 mF (1800 µF) nominal capacitance at 400 V rated voltage with ±20% tolerance (at 120 Hz, 20°C).
• Screw Terminal Package: Radial can with screw terminals (M5 nominal bolt for φ51 size) for secure, high‑current connections and straightforward mounting.
• Operating Range: Specified operation from −25°C to +85°C, suitable for equipment exposed to moderate temperature variations.
• Endurance: 5000 hours at 85°C under DC bias plus rated ripple current; after endurance test, capacitance remains within ±20%, tan δ ≤ 300% of initial, and leakage current ≤ initial specified value.
• Ripple Current Performance: Rated ripple current of 9.1 A at 120 Hz and 12.74 A at 10 kHz, supporting high ripple environments and fast charge/discharge cycles.
• Loss Tangent (tan δ): Specified tan δ (DF) of 0.15 at measurement conditions indicated in datasheet; refer to series data for measurement frequency and conditions.
• Polarized Design: Polar aluminum electrolytic construction intended for DC applications and rectifier circuits.
• Packaging & Availability: Supplied in cardboard packing and available for mass production.
• RoHS Compliant: Meets RoHS directive requirements as stated for the series.

Typical Applications

• AC Servo and Motor Drives: Supports high‑frequency regenerative voltage and rapid charge/discharge cycles in servomotor drive circuits.
• Inverters and Power Conversion: Used in general inverter DC link and smoothing where high ripple current and voltage stability are required.
• Rectifier Circuits / Voltage Doubler: Suitable for rectifier stages and voltage doubler configurations that experience fluctuating voltages.
• General Power Electronics: Applicable where a polarized, high‑capacitance screw‑terminal capacitor is needed for bulk energy storage and ripple filtering.

Unique Advantages

• High Ripple Handling: Measured ripple current ratings at both 120 Hz and 10 kHz provide quantifiable support for high‑duty power applications.
• Long Endurance at Elevated Temperature: 5000‑hour specification at 85°C with defined post‑test limits gives predictable lifetime behavior under stress.
• Secure Mechanical and Electrical Connection: Screw‑terminal can and M5 bolt nominal terminal provide reliable high‑current connections and easy field installation.
• Designed for Charge/Discharge Duty: Series endurance for 20 million charge/discharge cycles at room temperature demonstrates suitability for frequent cycling applications (datasheet series specification).
• Clear Performance Limits: Defined limits for capacitance change, tan δ, and leakage after endurance and shelf‑life tests allow engineering tradeoffs to be evaluated precisely.
• Regulatory Compliance: RoHS compliance for designs requiring restricted‑substance conformance.

Why Choose LQR2G182MSEF?

The LQR2G182MSEF positions itself as a robust, engineering‑grade screw‑terminal electrolytic capacitor for power electronics requiring substantial bulk capacitance, measurable ripple capability, and longevity at elevated temperature. Its 1800 µF / 400 V rating, combined with specified ripple currents and a 5000‑hour endurance at 85°C, makes it suitable for inverter, servo, and rectifier applications where predictable electrical aging and secure mechanical connections are important.

This part is appropriate for design teams and procurement sourcing components for mass production of industrial power systems, where proven specifications and RoHS compliance are required for system reliability and regulatory alignment.

If you would like pricing, lead‑time, or technical support for design integration, request a quote or contact sales with your project details and required quantities.