LQR2W472MSEJBB

The LQR2W472MSEJBB is a high-capacitance, screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series, rated at 4700 µF and 450 V. It is a polarized, radial can device designed for power-electronics environments that require high-voltage energy storage and frequent charge–discharge cycles.

Designed for long life and high-frequency duty, this capacitor is suited for inverter and motor-drive applications, equipment operating in areas with fluctuating voltages, and rectifier/voltage-doubler circuits. The part is in mass production and supplied in cardboard packing.

Key Features

• Capacitance & Voltage — 4700 µF nominal capacitance at a rated voltage of 450 V for bulk energy storage in high-voltage power rails.
• Package & Mounting — Radial can with screw terminals for secure, low-impedance connections; lead spacing is 1.252 inch to support robust mechanical mounting and high-current terminations.
• Endurance & Lifetime — Rated endurance of 5000 hours at 85°C with DC bias plus rated ripple current, meeting LQR series endurance criteria for sustained operation.
• Operating Temperature — Specified for −25°C to +85°C to cover a broad range of industrial ambient conditions.
• Ripple Current Performance — Handles 15.8 A at 120 Hz and 22.12 A at 100 kHz, enabling use in applications with significant AC ripple and high-frequency switching environments.
• 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 (measured at 20°C), per datasheet definition.
• Tolerance & Polarization — Capacitance tolerance is −20% to +20% at 120 Hz, 20°C; the device is polarized and must be installed with correct polarity.
• Mechanical Size — Compact radial can form factor with dimensions: L: 11 × D: 9 cm and a maximum seated height of 4.331 inch for planning chassis and enclosure layouts.
• Regenerative High-Speed Duty — Specified for 85°C high-speed charge–discharge operation and validated by LQR series charge–discharge endurance testing.
• RoHS Compliance & Packaging — RoHS compliant and supplied in cardboard packing for handling and storage.

Typical Applications

• AC Servo Drives and Motor Control — Energy buffering and regenerative voltage handling in servomotor drives and motion-control inverters.
• General Inverter Systems — DC-link and smoothing applications where high voltage and frequent charge–discharge cycles are present.
• Voltage-Doubler and Rectifier Circuits — Bulk storage and ripple suppression in rectifier and voltage-doubler topologies.
• Industrial Equipment in Fluctuating-Voltage Areas — Provides stable energy storage and ripple handling where supply voltage varies.
• General Purpose Power Electronics — Suitable wherever a high-voltage, high-capacitance polarized electrolytic capacitor is required.

Unique Advantages

• High-voltage energy storage: 450 V rated voltage enables DC-link and high-voltage smoothing applications without series stacking.
• Designed for frequent charge–discharge: LQR series specification for 85°C high-speed charge–discharge and 20 million cycle charge–discharge endurance testing supports demanding switching environments.
• Strong ripple handling: Specified ripple currents of 15.8 A (120 Hz) and 22.12 A (100 kHz) reduce temperature rise under AC ripple and high-frequency switching.
• Long operational life at elevated temperature: 5000 hours endurance at 85°C under rated conditions provides predictable life for industrial applications.
• Robust mechanical termination: Screw-terminal radial can and defined lead spacing (1.252 inch) simplify mounting and high-current connections in power assemblies.
• Regulatory and handling readiness: RoHS compliance and mass-production availability make the part suitable for standard manufacturing programs.

Why Choose LQR2W472MSEJBB?

The LQR2W472MSEJBB combines high capacitance and high-voltage capability with screw-terminal reliability and proven endurance characteristics from the Nichicon LQR family. Its specifications—4700 µF at 450 V, defined ripple current ratings, and 5000-hour endurance at 85°C—make it a practical choice for inverter, motor-drive, and other power-electronics designs that demand sustained charge–discharge performance.

This part is ideal for engineers and procurement teams designing robust industrial power systems where predictable lifetime, high-frequency ripple handling, and secure mechanical termination are required. Being in mass production and RoHS compliant, it supports production scalability and regulatory requirements for commercial deployments.

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