LQR2W472MSEGBN

The LQR2W472MSEGBN is a screw-terminal, aluminum electrolytic capacitor from Nichicon's LQR series designed for high-speed charge–discharge applications. With a rated capacitance of 4.7 mF (4700 µF), a 450 V rating, and an operating temperature range of −25 °C to +85 °C, it targets industrial power systems that require robust energy buffering at elevated voltages.

This part is particularly suited for high-frequency regenerative voltage scenarios such as AC servomotor drives, general inverters, voltage-doubler rectifier circuits, and other equipment operating in fluctuating-voltage environments. It is RoHS compliant and engineered for sustained ripple and charge–discharge duty.

Key Features

• High Voltage / High Capacitance: 4.7 mF nominal capacitance with a 450 V rated voltage delivers substantial energy storage for DC link and buffer applications.
• Screw Terminal Mounting: Radial can package with screw terminals provides secure, low-impedance connections for high-current power systems and straightforward mechanical installation.
• Wide Operating Temperature: Specified for −25 °C to +85 °C operation to handle a range of industrial ambient conditions.
• High Ripple and High-Frequency Capability: Rated ripple current of 16.5 A at 120 Hz and 23.1 A at 100 kHz supports both low-frequency and high-frequency power conversion and regenerative circuits.
• Long Endurance: Endurance rating of 5000 hours at 85 °C under D.C. bias plus rated ripple current; capacitance change and leakage current limits defined to ensure predictable service life.
• Charge–Discharge Durability: Specified to withstand 20 million charge–discharge cycles (ΔV = rated × 0.3 at 3 Hz) with limits on capacitance change, tan δ, and leakage current.
• Polarized Design: Polar capacitor suitable for DC link and rectifier circuits; capacitance tolerance ±20% at 120 Hz, 20 °C.
• Leakage Current Specification: After 5 minutes at rated voltage, leakage current is limited to not more than 3√(V) μA or 5 mA, whichever is smaller (at 20 °C).
• Physical Dimensions: Package dimensions listed as L: 17 × D: 6.35 cm; sleeve marking is white on dark-brown sleeve for clear polarity and identification.
• RoHS Compliance: Compliant to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Drives: Energy buffering and regenerative voltage handling for AC servomotor drives where high-speed charge–discharge and high ripple current capability are required.
• General Inverters: DC link smoothing and transient energy storage in inverter systems operating at elevated voltages and fluctuating supply conditions.
• Rectifier / Voltage Doubler Circuits: Bulk capacitance for rectifier stages and voltage-doubler configurations needing reliable high-voltage DC storage.
• Equipment in Fluctuating-Voltage Areas: Applications exposed to variable input voltages that require stable capacitance and long-term endurance under ripple and bias conditions.

Unique Advantages

• High Energy Density at 450 V: Enables reduced component count in DC link and bulk storage applications by combining high capacitance with a high voltage rating.
• Designed for High-Frequency Regeneration: Ripple current ratings at both 120 Hz and 100 kHz address performance needs across low- and high-frequency power electronics.
• Extended Endurance under Load: 5000-hour endurance at 85 °C with defined limits on capacitance, tan δ, and leakage current offers predictable long-term behavior in demanding systems.
• Robust Charge–Discharge Life: Qualified for 20 million charge–discharge cycles at defined ΔV and frequency, supporting applications with frequent regenerative events.
• Secure Screw-Terminal Connections: Screw terminal packaging supports reliable, low-impedance electrical and mechanical connections for high-current power assemblies.
• Regulatory Compliance: RoHS compliance ensures alignment with environmental requirements for global electronics manufacturing.

Why Choose LQR2W472MSEGBN?

The LQR2W472MSEGBN combines high voltage rating, substantial capacitance, and engineered endurance to meet the needs of industrial power-conversion and regenerative systems. Its screw-terminal form factor and defined ripple and charge–discharge specifications make it a practical choice where secure connections and predictable long-term performance are required.

This capacitor is well suited for engineers designing inverters, servo drives, and rectifier circuits in environments with fluctuating voltages who need a proven, specification-driven energy-storage component from Nichicon's LQR series.

Request a quote or submit a pricing inquiry to receive availability and lead-time information for the LQR2W472MSEGBN and discuss how it fits your design requirements.