LQR2V472MSEF

The LQR2V472MSEF is an aluminum electrolytic capacitor in a screw-terminal, radial can package designed for high-speed charge‑discharge applications. It provides 4.7 mF capacitance at a 350 V rated voltage and is targeted at power-electronics environments that require high-frequency regenerative handling and robust voltage fluctuation tolerance.

Engineered for use in equipment such as AC servomotor regenerative circuits, general inverters and rectifier circuits (voltage doubler), this capacitor supports operating temperatures from −25 °C to +85 °C and is RoHS compliant.

Key Features

• Electrical rating — 4.7 mF capacitance with a 350 V rated voltage and a tolerance of −20% to +20% (measured at 120 Hz, 20 °C).
• High ripple capability — Rated ripple current of 17 A at 120 Hz and 23.8 A at 10 kHz to support high-frequency regenerative and inverter applications.
• Screw-terminal radial can package — Screw terminal mounting for secure power connections in demanding power-electronics assemblies.
• Wide operating temperature — Specified for operation from −25 °C to +85 °C, suitable for environments with moderate ambient variation.
• Endurance and charge-discharge durability — Endurance specified as 5000 hours at 85 °C under DC bias plus rated ripple current; charge-discharge behavior validated for 20 million cycles (ΔV = rated voltage × 0.3, 3 Hz) at room temperature with defined limits for capacitance change, tan δ and leakage current.
• Leakage and impedance characteristics — Leakage current limited to 3√V (µA) or 5 mA (whichever is smaller) after 5 minutes at rated voltage (20 °C); impedance ratio Z(−25 °C)/Z(+20 °C) ≤ 8.
• Environmental compliance — Compliant with the RoHS Directive (2011/65/EU, (EU)2015/863).
• Physical dimensions — Package dimensions: length 17 cm × diameter 5.1 cm (radial can, screw terminals).

Typical Applications

• AC servomotor regenerative circuits — Handles high-frequency regenerative voltage in motor drive systems where rapid charge-discharge performance is required.
• General inverters — Provides bulk energy storage and ripple filtering for inverter DC bus applications exposed to fluctuating voltages.
• Rectifier circuits (voltage doubler) — Suited for rectifier stages that require stable capacitance under varying input conditions.
• Equipment in voltage-fluctuating areas — Designed for systems operating in environments with frequent voltage variation, leveraging endurance and leakage control.

Unique Advantages

• High ripple-current tolerance: Supports 17 A at 120 Hz and 23.8 A at 10 kHz, enabling effective filtering and energy handling in high-frequency power systems.
• Proven endurance under stress: Meets endurance requirements after 5000 hours at 85 °C with DC bias plus rated ripple and retains capacitance within ±20% and leakage within specified limits.
• Charge-discharge robustness: Validated for 20 million charge-discharge cycles (ΔV = 0.3×Vrated), providing predictable performance in cyclic power applications.
• Secure power connections: Screw-terminals in a radial can package provide stable mechanical and electrical connection for high-current assemblies.
• Controlled low-temperature impedance: Impedance ratio maintained (Z(−25 °C)/Z(+20 °C) ≤ 8) for reliable performance down to −25 °C.
• Regulatory compliance: RoHS compliance supports adoption in designs requiring restricted-substance conformance.

Why Choose LQR2V472MSEF?

The LQR2V472MSEF is positioned for power-electronics designs that demand high ripple handling, fast charge-discharge capability and proven endurance under elevated temperature and bias. With a 350 V rating, 4.7 mF capacitance and screw-terminal radial packaging, it integrates into inverter, motor drive and rectifier systems where reliable bulk energy storage and repeatable cyclic performance are required.

Long-term value is supported by defined endurance and shelf-life test conditions, controlled leakage and impedance specifications, and RoHS compliance—making the LQR2V472MSEF suitable for engineers specifying durable capacitors for regenerative, inverter and voltage-doubler applications.

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