LQR2G392MSEH

The LQR2G392MSEH is an aluminum electrolytic capacitor in a screw-terminal radial can package designed for demanding power-electronics applications. It is optimized for high-speed charge–discharge performance at up to 85°C and is suited for high-frequency regenerative voltages and voltage-fluctuating environments.

Key use cases include AC servomotor regenerative circuits, general inverters and rectifier circuits such as voltage doublers. The part is RoHS compliant and targeted for general-purpose industrial power designs that require high ripple handling and long endurance.

Key Features

• Capacitance & Voltage — 3.9 mF rated capacitance at 400 V for energy storage and DC-link applications where higher voltage and capacitance are required.
• High-speed charge–discharge (85°C) — Engineered for high-speed charge–discharge performance at up to 85°C to support regenerative and dynamic power cycles.
• Low equivalent series resistance (ESR) — 150 mΩ measured at 120 Hz, supporting efficient high-current operation and reduced power loss.
• High ripple current capability — Rated for 15.3 A at 120 Hz and 21.42 A at 10 kHz, enabling effective handling of both low- and high-frequency ripple in inverter and motor-drive circuits.
• Long endurance — Designed for 5,000 hours at 85°C under DC bias plus rated ripple current, with specified limits for capacitance change, tan δ and leakage current.
• Package & mounting — Radial can with screw terminals for robust, high-current connections and secure mounting in industrial equipment.
• Wide operating temperature — Specified for operation from −25°C to +85°C to cover a broad range of industrial ambient conditions.
• Polarized design — Intended for DC applications where a polarized electrolytic capacitor is required.
• RoHS compliant — Complies with the RoHS Directive (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor drives — Used in regenerative voltage circuits to absorb and manage energy returned during deceleration and dynamic motion.
• General inverters — Employed on inverter DC-link and filtering stages where high ripple current and voltage stability are needed.
• Voltage-doubler rectifier circuits — Suitable for rectifier stages and voltage-doubler configurations requiring high-voltage capacitance.
• Equipment in voltage-fluctuating areas — Provides energy buffering and stability for equipment exposed to fluctuating supply conditions.

Unique Advantages

• High-voltage energy storage: 400 V rating with 3.9 mF capacitance supports DC-link and energy-buffering needs in power conversion systems.
• High ripple tolerance: Specified ripple current at both 120 Hz and 10 kHz reduces thermal stress and supports reliable operation under continuous ripple loads.
• Low ESR at 120 Hz: 150 mΩ ESR minimizes losses and heating, improving overall system efficiency in power circuits.
• Durability under stress: 5,000-hour endurance at 85°C under DC bias and ripple current provides predictable long-term behavior in industrial environments.
• Screw-terminal connectivity: Radial can with screw terminals enables secure, low-resistance high-current connections and simplifies integration into power assemblies.
• Compliance: RoHS conformity supports regulatory and environmental requirements for industrial electronic equipment.

Why Choose LQR2G392MSEH?

The LQR2G392MSEH combines a high 400 V rating and substantial 3.9 mF capacitance with low ESR and strong ripple-current capability to address the needs of regenerative and inverter power systems. Its screw-terminal radial can construction and 5,000-hour endurance at 85°C make it well suited for industrial designs that require reliable energy buffering and predictable long-term performance under continuous ripple and thermal stress.

This capacitor is appropriate for engineers specifying components for AC servomotor drives, general inverters, rectifier/voltage-doubler circuits, and equipment operating in areas with significant voltage fluctuation. Backed by Nichicon’s LQR series design, it delivers verifiable specifications for system-level power stability and durability.

Request a quote or submit a product inquiry with your project requirements to obtain pricing and availability for the LQR2G392MSEH. Provide application details and required quantities to help expedite your response.