LQR2W682MSEH

The LQR2W682MSEH is a screw‑terminal aluminum electrolytic capacitor in Nichicon’s LQR series, offering 6.8 mF capacitance at 450 V with a rated temperature of up to 85°C. It is designed for high‑speed charge/discharge and high ripple environments commonly found in industrial power electronics.

This part is suited for equipment subject to fluctuating voltages and high‑frequency regenerative conditions, including AC servomotor drives, general inverters, and rectifier circuits such as voltage doublers. The LQR2W682MSEH is RoHS compliant.

Key Features

• High Capacitance and Voltage: 6.8 mF (6800 µF) rated at 450 V provides substantial energy storage for power conversion and buffering applications.
• Screw‑Terminal Radial Can Package: Screw terminal mounting and radial can construction provide robust mechanical and electrical connections for high‑current applications.
• Wide Operating Temperature Range: Rated for −25°C to +85°C to support industrial environments.
• High Ripple Current Capability: Rated ripple current of 23.3 A at 120 Hz and 32.62 A at 10 kHz to handle both low‑ and high‑frequency ripple present in inverter and regenerative circuits.
• Endurance and Charge/Discharge Robustness: Designed to meet endurance requirements after 5000 hours at 85°C with DC bias plus rated ripple; charge/discharge endurance tested to 20 million cycles at room temperature (ΔV = rated voltage × 0.3, 3 Hz).
• Leakage and Stability: Leakage current after 5 minutes is specified as not more than 3√V (µA) or 5 mA (whichever is smaller); impedance stability specified for low‑temperature operation (Z at −25°C up to 8× Z at +20°C).
• Capacitance Tolerance and Polarization: ±20% tolerance at 120 Hz, 20°C; polarized design for DC link and bulk energy storage.
• RoHS Compliance: Complies with RoHS directives (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servomotor Drives: Energy buffering and high‑frequency regenerative voltage handling in motor control systems.
• Inverters and Power Converters: DC link and smoothing for general inverters where voltage fluctuation and high ripple currents occur.
• Rectifier / Voltage Doubler Circuits: Bulk storage and transient buffering in rectifier topologies including voltage doublers.
• Industrial Power Supplies: High‑energy bulk capacitor for systems with frequent charge/discharge cycles and varying line conditions.

Unique Advantages

• High Energy Density at High Voltage: 6.8 mF at 450 V provides significant stored energy for DC link and regenerative applications, reducing the need for multiple parallel components.
• Screw Terminal for Secure Connections: Screw terminal mounting ensures reliable, low‑resistance connections for high current paths and simplifies installation and maintenance.
• Designed for High‑Frequency Regeneration: Rated ripple current at both 120 Hz and 10 kHz supports performance in high‑frequency regenerative and inverter environments.
• Proven Endurance: Endurance specification of 5000 hours at 85°C and 20 million charge/discharge cycles demonstrates suitability for demanding cycling and thermal stresses.
• Industrial Temperature Range: −25°C to +85°C operation accommodates a wide range of industrial operating conditions.
• Regulatory Compliance: RoHS compliance supports deployment in regions with restricted substances requirements.

Why Choose LQR2W682MSEH?

The LQR2W682MSEH combines high capacitance and high voltage in a screw‑terminal radial can optimized for high‑frequency regenerative and fluctuating‑voltage environments. Its specification set—ripple current capability at multiple frequencies, long endurance at elevated temperature, and charge/discharge robustness—makes it a strong choice for industrial power electronics where energy buffering and resilient performance are critical.

This capacitor is well suited for designers of inverters, motor drives, and industrial power supplies who require a rugged, RoHS‑compliant bulk energy component with proven endurance characteristics and secure screw‑terminal connections.

Request a quote or submit a pricing inquiry to receive availability and application support for LQR2W682MSEH. Our team can provide lead‑time and volume pricing information to help with your design and procurement planning.