LQR2V392MSEH

The LQR2V392MSEH is a screw-terminal aluminum electrolytic capacitor from Nichicon's LQR series, rated 3.9 mF (3900 µF) at 350 V with an operating temperature range of -25°C to +85°C. It is designed for high-speed charge–discharge and high-frequency regenerative voltage applications.

Targeted use cases include AC servomotor regenerative circuits, general inverters, rectifier circuits such as voltage doublers, and equipment operating in voltage-fluctuating environments. Key value comes from its high ripple-current capability, robust endurance, and secure screw-terminal packaging for power electronics installations.

Key Features

• Capacitance & Voltage — 3.9 mF nominal capacitance with a 350 V rated voltage and ±20% tolerance, suitable for bulk energy storage in power circuits.
• Screw Terminal Package — Radial can with screw terminals for secure, low-impedance connections in power assemblies and field wiring.
• High Ripple Current Performance — Rated ripple current of 14.1 A at 120 Hz and 19.74 A at 10 kHz, supporting high-frequency regenerative and inverter loads.
• Thermal & Endurance — Operational range from -25°C to +85°C with a specified endurance of 5000 hours at 85°C (with DC bias plus rated ripple), and charge–discharge endurance tested to 20 million cycles (ΔV = rated × 0.3, 3 Hz).
• Reliability Metrics — Leakage current specification per datasheet (after 5 minutes, not more than 3√V μA or 5 mA, whichever is smaller) and stability at low temperature with Z(-25°C)/Z(+20°C) ≤ 8.
• Environmental Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• AC Servomotor Regeneration — Handles high-frequency regenerative voltages in servo drives to stabilize DC bus energy during braking.
• General Inverters — Provides bulk energy buffering and ripple handling for inverter power stages subject to rapid switching and voltage fluctuation.
• Rectifier / Voltage Doubler Circuits — Suitable for rectifier circuits and voltage-doubler topologies requiring large capacitance at high voltage.
• Equipment in Voltage-Fluctuating Areas — Designed for systems exposed to frequent voltage variation where robust charge–discharge endurance and ripple tolerance are needed.

Unique Advantages

• High ripple-current capability: Supports 14.1 A at 120 Hz and 19.74 A at 10 kHz, enabling effective handling of high-frequency currents in regenerative and inverter applications.
• Secure screw-terminal connectivity: Screw terminals provide reliable, low-impedance electrical and mechanical connections for power assemblies and serviceability.
• Proven endurance under stress: Specified for 5000 hours at 85°C with DC bias plus rated ripple and validated for 20 million charge–discharge cycles, supporting long-term operation in demanding environments.
• Wide operating temperature range: Rated from -25°C to +85°C to accommodate a variety of industrial ambient conditions.
• Clear leakage and impedance specifications: Leakage current limits and low-temperature impedance ratio (Z(-25°C)/Z(+20°C) ≤ 8) give predictable behavior across conditions.
• RoHS compliance: Meets 2011/65/EU and (EU)2015/863 requirements for restricted substances.

Why Choose LQR2V392MSEH?

The LQR2V392MSEH is positioned for power-electronics designs that require a high-capacitance, high-voltage electrolytic with durable charge–discharge characteristics and strong ripple-handling capability. Its screw-terminal form factor and clear endurance specifications make it suitable for inverter drives, servo regenerative systems, and rectifier circuits where reliability under frequent voltage fluctuation is critical.

Engineers and procurement teams will find long-term value in the component's rated lifetime (5000 hours at 85°C), validated charge–discharge endurance, and RoHS compliance—backed by Nichicon's LQR series product lineage for industrial power applications.

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