LQR2W392MSEJBN

The LQR2W392MSEJBN is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LQR series, rated at 3.9 mF (3900 µF) and 450 V. Designed for high-frequency charge‑discharge environments, this can-style capacitor is optimized for use in regenerative AC servomotor circuits, general inverters, and rectifier circuits such as voltage doublers.

With an operating temperature range of −25 °C to +85 °C, RoHS compliance, and specified endurance under DC bias plus rated ripple current, the LQR2W392MSEJBN targets power-electronics designs that demand high-voltage energy storage with robust ripple handling and long-term stability.

Key Features

• High Capacitance and Voltage: 3.9 mF (3900 µF) at 450 V — provides bulk energy storage suitable for high-voltage inverter and regenerative circuits.
• Screw Terminal Package: Radial can with screw terminals for secure, low-impedance connections in power assemblies and serviceable installations.
• Ripple Current Handling: Rated ripple current of 13.6 A at 120 Hz and 19.04 A at 10 kHz — supports high-frequency regenerative and inverter ripple loads.
• Wide Temperature Range: Specified for −25 °C to +85 °C operation, with endurance rated at 5000 hours at 85 °C under D.C. bias plus rated ripple current.
• Endurance and Charge-Discharge Durability: Meets endurance criteria after 5000 hours at 85 °C and after 20 million charge‑discharge cycles (ΔV = rated × 0.3, 3 Hz) per series specifications.
• Leakage and Low-Temperature Stability: Leakage current limit defined as not more than 3√V μA or 5 mA (whichever is smaller) after 5 minutes at 20 °C; impedance ratio Z(−25 °C)/Z(+20 °C) specified as 8 for stability in colder environments.
• Polarized Design: Polarized electrolytic construction for applications requiring DC energy storage.
• RoHS Compliant: Conforms to RoHS directive (2011/65/EU, (EU)2015/863).
• Form Factor: φ90 × 90L can size with nominal package dimensions L: 9 × D: 9 cm for straightforward mechanical integration.

Typical Applications

• AC Servomotor Regenerative Circuits: Energy buffering and smoothing for regenerative voltage events in servo drives.
• General Inverters: Bulk DC link and ripple suppression in inverter power stages subject to high-frequency switching and load transients.
• Voltage Doubler Rectifier Circuits: Suitable as the DC energy storage element in rectifier configurations where high voltage capability is required.
• Equipment in Variable-Voltage Environments: Designed for systems operating in areas with fluctuating line voltage where sustained DC energy storage and ripple endurance are necessary.

Unique Advantages

• High-Voltage Energy Storage: 450 V rating enables use in high-voltage DC link and rectifier applications without additional series stacking.
• High Ripple Endurance: Specified ripple current ratings at both 120 Hz and 10 kHz support designs with significant AC components and high-frequency regenerative events.
• Durability Under Stress: 5000-hour endurance at 85 °C under DC bias plus rated ripple current and 20 million charge/discharge cycles ensure long-term functional stability in demanding power applications.
• Secure, Serviceable Termination: Screw terminal construction simplifies field wiring and maintenance while providing robust electrical connection for high-current paths.
• Temperature and Low-Temp Performance: Operating range to −25 °C and defined impedance behavior at low temperatures help maintain functionality across a broad environmental envelope.
• Regulatory Compliance: RoHS conformity supports deployment in regions enforcing restricted substance regulations.

Why Choose LQR2W392MSEJBN?

The LQR2W392MSEJBN combines high capacitance and 450 V rating in a screw-terminal aluminum electrolytic package tailored for regenerative, inverter, and rectifier applications where reliable DC energy storage and ripple handling are required. Its specified ripple current capabilities, endurance at elevated temperature, and charge‑discharge durability make it a practical choice for power-electronics designs subject to frequent transients and voltage fluctuations.

Manufactured by Nichicon and built to the LQR series specifications, this capacitor is suitable for engineers and procurement teams specifying high-voltage bulk capacitors for industrial drives, power conversion systems, and equipment operating in variable-voltage environments where long-term stability and maintainable connections are important.

Request a quote or submit an inquiry to discuss availability, lead times, and pricing for LQR2W392MSEJBN. Our team can provide part availability and support for your design and procurement needs.