LQR2G472MSEG

The LQR2G472MSEG is a screw-terminal aluminum electrolytic capacitor designed for high-frequency charge–discharge and heavy ripple current applications. It combines a 4700 µF capacitance with a 400 V rating in a φ63.5 × 150 mm can with M5 screw terminals, targeting industrial power electronics where robust power smoothing and energy buffering are required.

Engineered for demanding environments, this part delivers high ripple-current capability, long endurance (5000 hours at 85°C) and controlled dissipation factor, making it suitable for regenerative circuits, inverters and equipment exposed to fluctuating voltages.

Key Features

• Capacitance & Voltage — 4700 µF nominal capacitance at a 400 V rated voltage, ±20% tolerance (measured at 120 Hz, 20°C).
• High Ripple Current — Designed for heavy ripple loads: 18.7 A at 120 Hz (low frequency) and 26.18 A at 10 kHz (high frequency).
• Low Loss (tan δ) — Dissipation factor of 0.15 (tan δ) at 20°C and 120 Hz for lower heating under AC ripple conditions.
• Endurance — 5000 hours life at 85°C under rated DC bias plus rated ripple current; capacitance change within ±20% and leakage and tan δ remain within specified limits after endurance testing.
• Charge–Discharge Durability — Qualified for charge–discharge endurance (20 million cycles at ΔV = rated × 0.3, 3 Hz) with retained electrical characteristics.
• Robust Screw-Terminal Construction — Radial can with screw terminals and M5 bolt nominal terminal for secure, high-current connections in industrial assemblies.
• Wide Operating Range — Rated for operation from −25°C to +85°C with a specified low-temperature impedance characteristic (Z(−25°C)/Z(+20°C) ≤ 8).
• RoHS Compliant — Manufactured in accordance with RoHS directive requirements.

Typical Applications

• Motor Drives and Regenerative Circuits — Smoothing and buffering high-frequency regenerative voltages in AC servomotor systems and drive electronics.
• Inverters and Power Conversion — Bulk energy storage and ripple suppression in general inverter topologies and PWM power stages.
• Voltage-Doubler and Rectifier Circuits — Use in rectifier and voltage-doubler stages where stable capacitance and endurance under fluctuating voltages are required.
• Systems Subject to Voltage Fluctuations — Stabilization and transient absorption in equipment operating in environments with frequent voltage variation.

Unique Advantages

• High ripple-handling capability: Supports 18.7 A (120 Hz) and 26.18 A (10 kHz), enabling reliable operation under heavy AC ripple and high-frequency switching environments.
• Long operational life: 5000 hours at 85°C under rated conditions provides predictable lifetime performance for industrial power designs.
• Proven charge–discharge endurance: Validated for 20 million charge–discharge cycles (ΔV = rated × 0.3, 3 Hz), preserving capacitance, tan δ and leakage characteristics.
• Secure, serviceable terminations: Screw-terminal (M5) mounting simplifies installation and provides robust connections for high-current cabling.
• Controlled losses: Low dissipation factor (tan δ = 0.15 at 20°C, 120 Hz) reduces internal heating during AC operation.
• Temperature stability: Specified operation from −25°C to +85°C with defined low-temperature impedance behavior for predictable performance across the operating range.

Why Choose LQR2G472MSEG?

The LQR2G472MSEG is positioned for industrial power-electronics applications that require high-capacitance energy storage, strong ripple-current capability and long-term endurance. Its screw-terminal construction and M5 connections make it practical for assemblies where secure, low-resistance connections and serviceability are important.

This capacitor is well suited to designers of inverters, motor drives and power-stage rectifiers who need verified endurance under charge–discharge cycling and stable electrical behavior across a wide operating temperature range. RoHS compliance and series-level specifications provide documented performance for integration and procurement decisions.

Request a quote or submit an inquiry for LQR2G472MSEG to evaluate its fit for your power-electronics designs and project requirements.