LQR2G472MSEGBB

The LQR2G472MSEGBB is a Nichicon LQR series aluminum electrolytic capacitor in a screw-terminal radial can. It is a polarized, high-capacitance unit rated at 400 V with a nominal capacitance of 4.7 mF and is designed for demanding power-electronic environments.

Targeted use cases include high-frequency regenerative voltage handling for AC servomotors and general inverters, operation in equipment exposed to fluctuating line voltages, and rectifier circuits such as voltage doublers. The part combines high ripple-current capability, low ESR, and long endurance at elevated temperature.

Key Features

• Rated Capacitance and Voltage — 4.7 mF capacitance at a 400 V rating provides bulk energy storage for power-conversion circuits.
• Screw Terminal, Radial Can Package — Robust screw-terminal mounting for secure electrical and mechanical connection in power assemblies.
• Low Equivalent Series Resistance (ESR) — ESR of 1.105 mΩ measured at 120 Hz, specified for the part to support high-current ripple conditions.
• High Ripple Current Capability — Specified ripple current 18.7 A at 120 Hz and 26.18 A at 10 kHz to handle AC ripple in inverter and regenerative circuits.
• Temperature and Endurance — Operating range −25 °C to +85 °C with rated-life specification of 5000 hours at 85 °C under DC bias plus rated ripple current.
• Charge–Discharge Endurance (Series Data) — Series-level specification includes endurance under charge–discharge cycling (20 million cycles at defined ΔV and cycle rate) consistent with applications requiring frequent energy transfer.
• Capacitance Tolerance — ±20% at 120 Hz, 20 °C.
• RoHS Compliance — Compliant with the RoHS directive (2011/65/EU,(EU)2015/863).
• Physical Size — Package dimension L: 15 × D: 6.35 cm (radial can with screw terminals).

Typical Applications

• AC Servomotor Regenerative Circuits — Suited for high-frequency regenerative voltage in AC servomotor systems where robust energy buffering and ripple handling are required.
• General Inverters — Applied in inverter DC-link and filtering stages to support high ripple currents and fluctuating DC conditions.
• Voltage-Doubler Rectifier Circuits — Suitable for use in rectifier circuits such as voltage doublers where high voltage rating and capacitance are needed.
• Equipment in Fluctuating-Voltage Environments — Designed for systems exposed to unstable line or load conditions, leveraging the part’s voltage rating, ripple capability, and series endurance specs.

Unique Advantages

• High energy storage at 400 V — Enables compact DC-link and buffering solutions for medium-voltage power electronics.
• Low measured ESR — 1.105 mΩ at 120 Hz, which supports the specified high ripple currents and helps manage thermal rise under ripple loading.
• Wide ripple-frequency support — Rated ripple currents specified at both 120 Hz and 10 kHz allow predictable performance across low and high ripple-frequency environments.
• Designed for elevated-temperature operation — 5000-hour life at 85 °C under DC bias plus rated ripple current provides a clear endurance baseline for thermal-stressed applications.
• Robust screw-terminal mounting — Facilitates secure electrical connection and simplifies installation in power assemblies and test fixtures.
• Series-level charge–discharge endurance — Series specifications include qualification for repeated charge–discharge cycles, supporting applications with frequent energy transfer events.

Why Choose LQR2G472MSEGBB?

LQR2G472MSEGBB delivers a combination of high capacitance (4.7 mF), a 400 V rating, low ESR, and specified high ripple-current capability tailored for power-electronic designs such as inverters, regenerative drives, and rectifier assemblies. Its screw-terminal radial can package and series-proven endurance characteristics make it suitable for engineering teams that need predictable performance under fluctuating voltages and frequent energy transfer.

This part is a fit for designers and procurement teams building industrial drives, inverter systems, and other power-conversion equipment that require verified endurance at elevated temperature, clear ripple-current specifications, and RoHS compliance for regulatory alignment.

Request a quote or submit a specification inquiry for LQR2G472MSEGBB to evaluate suitability for your design and obtain pricing and availability details.