LQR2V332MSEFBB

The LQR2V332MSEFBB is an aluminum electrolytic capacitor in a screw-terminal radial can package, rated 3.3 mF (3300 µF) at 350 V with a category temperature range of −25 °C to +85 °C. It is designed for high-speed charge–discharge duty and applications that demand robust energy buffering under fluctuating voltages.

Targeted use cases include high-frequency regenerative voltage circuits for AC servomotors and general inverters, rectifier circuits such as voltage doublers, and other equipment operating in voltage‑fluctuating environments. The device is RoHS compliant and built by Nichicon.

Key Features

• Capacitance & Rated Voltage: 3.3 mF (3300 µF) nominal capacitance at a rated voltage of 350 V with ±20% tolerance at 120 Hz, 20 °C.
• Screw Terminal Mounting: Radial can with screw terminals (M5 bolt nominal for this size) for secure, high-current connections and ease of installation in power assemblies.
• High‑speed Charge–Discharge Capability: Engineered for frequent charge/discharge cycles; meets endurance of 20 million cycles (ΔV = rated × 0.3, 3 Hz) while retaining capacitance, tan δ, and leakage current within specified limits.
• Thermal Endurance: Rated for 5000 hours at 85 °C under DC bias plus rated ripple current with capacitance change and leakage staying within specified limits after recovery to 20 °C.
• Ripple Current Performance: 12.4 A at 120 Hz and 17.36 A at 10 kHz, supporting high-frequency regenerative and inverter loads.
• Leakage Current Spec: After 5 minutes at rated voltage, leakage current is ≤ 3√(V) µA or 5 mA, whichever is smaller (measured at 20 °C).
• Low‑Temperature Stability: Impedance ratio Z(−25 °C)/Z(+20 °C) ≤ 8, providing predictable behavior in colder operating conditions.
• Package & Dimensions: Radial can with screw terminals; physical size L: 13.0 cm × D: 5.1 cm, polarization required.

Typical Applications

• AC Servo Drives: Energy buffering and regenerative voltage handling for high-frequency torque control and braking circuits.
• General Inverters: DC-link and smoothing applications where high ripple currents and fast charge–discharge cycles occur.
• Voltage Doubler Rectifiers: Use in rectifier circuits that require stable capacitance under fluctuating input voltages.
• Equipment in Fluctuating Voltage Environments: Systems exposed to frequent voltage swings that need durable, long‑life energy storage.

Unique Advantages

• High‑voltage energy buffering: 350 V rating combined with 3300 µF capacitance delivers substantial stored energy for DC-link and regenerative duties.
• Designed for rapid cycling: Endurance verified for 20 million charge/discharge cycles and 5000 hours at 85 °C under rated conditions, improving reliability in demanding pulse applications.
• High ripple handling: Specified ripple current at both 120 Hz and 10 kHz supports both line-frequency smoothing and high‑frequency regenerative currents.
• Robust mechanical connection: Screw-terminal configuration simplifies secure, low-impedance electrical and mechanical integration into power assemblies.
• Predictable cold‑start behavior: Defined impedance ratio at −25 °C ensures designers can account for low‑temperature performance.
• Regulatory compliance: RoHS compliant for integration into assemblies requiring restricted substance conformity.

Why Choose LQR2V332MSEFBB?

The LQR2V332MSEFBB combines high capacitance and a 350 V rating with screw‑terminal construction and validated endurance for high‑speed charge–discharge environments. It is positioned for engineering teams designing power electronics—especially regenerative drives, inverters, and rectifier circuits—where reliable energy buffering, high ripple handling, and long life at elevated temperature are required.

Manufactured by Nichicon, this part supports predictable electrical behavior across −25 °C to +85 °C and includes specifications for leakage, impedance, and endurance that help reduce iteration during system validation and support longer operational service in voltage‑challenging applications.

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