LQR2V222MSEF

The LQR2V222MSEF from Nichicon is an aluminum electrolytic capacitor in a screw-terminal radial can designed for high-frequency charge–discharge environments. It provides 2200 µF capacitance at a 350 V rating and is built for use in power conversion and regenerative systems.

Typical use cases include high-frequency regenerative voltage for AC servomotors, general inverters, equipment operating in areas with fluctuating voltage, and rectifier circuits such as voltage doublers. The part is RoHS compliant and targeted at engineers specifying robust power-capacitance solutions.

Key Features

• Capacitance and Voltage: 2.2 mF (2200 µF) rated at 350 V for bulk energy storage in high-voltage power circuits.
• High-frequency performance: Rated ripple current of 9.1 A at 120 Hz and 12.74 A at 10 kHz supports demanding ripple and switching environments.
• Operating temperature and lifetime: Operates from −25 °C to +85 °C with an endurance rating of 5000 hours at 85 °C under DC bias plus rated ripple current.
• Endurance and charge–discharge durability: Endurance limits: capacitance change within ±20%, tan δ up to 300% of initial value, leakage current ≤ initial specified value after endurance testing. Also specified for 20 million charge–discharge cycles (ΔV = rated × 0.3, 3 Hz) at room temperature.
• Leakage current specification: After 5 minutes at rated voltage, leakage is ≤ 3√(√V) µA or 5 mA, whichever is smaller (at 20 °C), providing predictable startup behavior.
• Low-temperature stability: Impedance ratio Z(−25 °C)/Z(+20 °C) ≤ 8, supporting performance in fluctuating ambient conditions.
• Mechanical & mounting: Radial can with screw terminals for secure, high-current connections and straightforward panel or bracket mounting. Marked with white printing on a dark-brown sleeve for polarity and identification.
• Compliance: RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• AC servomotor drives: Absorbs and supplies regenerative energy during braking and direction changes in servo systems.
• General inverters: Bulk smoothing and ripple handling in inverter DC-link stages where high-voltage capacitance is required.
• Voltage-doubler rectifiers: Used in rectifier circuits such as voltage doublers to provide stable DC smoothing under fluctuating input conditions.
• Equipment operating in fluctuating voltage environments: Provides robust energy buffering for systems exposed to variable mains or unstable supply conditions.

Unique Advantages

• High-voltage energy storage: 350 V rating combined with 2200 µF capacitance enables substantial energy buffering in compact power designs.
• Designed for high-frequency ripple: Specified ripple currents at both 120 Hz and 10 kHz enable reliable operation in switching and regenerative applications.
• Proven endurance: 5000 hours at 85 °C under rated stress and defined charge–discharge cycling (20 million cycles) demonstrate long-term stability in demanding duty cycles.
• Secure screw-terminal connections: Screw terminals simplify installation and provide robust electrical and mechanical connection for high-current paths.
• Predictable leakage behavior: Clear leakage current limits after initial application of rated voltage aid in power-up and hold-up design decisions.
• RoHS compliance: Meets RoHS directives for use in designs targeting regulatory conformity.

Why Choose LQR2V222MSEF?

The LQR2V222MSEF balances high-voltage capability, substantial capacitance, and high-frequency ripple handling in a screw-terminal aluminum electrolytic package by Nichicon. Its endurance specifications and charge–discharge qualifications make it suitable for power-electronics designs that require predictable long-term behavior under continuous ripple and regenerative conditions.

This capacitor suits engineers designing inverter DC-links, servo drive energy buffers, and other industrial power systems where robust mounting, secure terminals, and clear electrical limits are important. Choosing this part supports durable system performance and straightforward integration into high-voltage power architectures.

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