LQR2W392MSEGBB

The LQR2W392MSEGBB is a screw-terminal aluminum electrolytic capacitor designed for high-voltage power applications. With a nominal capacitance of 3.9 mF (3900 µF) at 450 V and a radial can screw-terminal package, it targets industrial power electronics where robust energy storage and frequent charge-discharge cycles are required.

Engineered for high-frequency regenerative and inverter environments, this capacitor supports applications such as AC servomotor regenerative circuits, general inverters, and rectifier/voltage-doubler circuits. RoHS compliant, it provides a combination of high voltage handling, elevated ripple capability, and endurance for equipment operating across fluctuating supply conditions.

Key Features

• Capacitance and Voltage: 3.9 mF (3900 µF) nominal capacitance at a rated voltage of 450 V for high-energy storage in DC bus and regenerative circuits.
• Screw Terminal Package: Radial can with screw terminals designed for secure, high-current connections and easy serviceability in industrial assemblies.
• Operating Temperature Range: Rated for −25 °C to +85 °C to support a wide range of industrial environments.
• Endurance (Thermal): Specified endurance of 5000 hours at 85 °C with DC bias plus rated ripple current; after recovery to 20 °C, capacitance remains within ±20% and leakage current stays within initial limits.
• Charge–Discharge Durability: Qualified for charge–discharge endurance (20 million cycles at ΔV = rated voltage × 0.3, 3 Hz) with no remarkable appearance abnormalities and retention of electrical characteristics.
• Ripple Current Capability: Rated ripple current of 13.7 A at 120 Hz and 19.18 A at 10 kHz, supporting high-frequency regenerative loads.
• Impedance Stability at Low Temperature: Impedance ratio Z(−25 °C)/Z(+20 °C) ≤ 8, aiding performance in colder operating conditions.
• Leakage Current Specification: After 5 minutes at rated voltage, leakage current is limited to 3√(√V) µA or 5 mA, whichever is smaller (measured at 20 °C).
• Marking and Identification: Sleeve printed in white on dark brown for clear polarity and part identification.
• RoHS Compliance: Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).
• Physical Size: Length 15 cm × Diameter 6.35 cm; designed for screw-terminal mounting in standard industrial layouts.

Typical Applications

• AC Servomotor Regenerative Circuits: Provides high-voltage energy buffering and high-frequency ripple handling required for regenerative braking and energy recovery.
• General Inverters and Motor Drives: Used on DC bus sections where high capacitance at 450 V and substantial ripple current capability stabilize supply and absorb transient energy.
• Voltage Doubler / Rectifier Circuits: Suited for rectifier and voltage-doubler topologies that require reliable high-voltage smoothing and storage.
• Industrial Equipment in Fluctuating Voltage Environments: Robust endurance and thermal rating make it appropriate for systems exposed to supply variations and frequent charge–discharge cycles.

Unique Advantages

• High-Voltage Energy Storage: 450 V rating with 3900 µF capacitance supplies substantial DC bus energy for regenerative and inverter systems.
• High Ripple Current Handling: 13.7 A (120 Hz) and 19.18 A (10 kHz) ripple ratings enable use in high-frequency switching environments without compromising performance.
• Designed for Long-Term Thermal Endurance: 5000 hours at 85 °C with specified recovery limits helps ensure predictable electrical behavior over prolonged thermal stress.
• Proven Charge–Discharge Reliability: Validated for 20 million charge–discharge cycles at specified conditions, supporting applications with frequent energy cycling.
• Serviceable Screw-Terminal Mounting: Screw terminals and a radial can package provide robust mechanical and electrical connections for high-current industrial installations.
• Compliance and Traceability: RoHS compliance and clear sleeve marking aid regulatory requirements and assembly verification.

Why Choose LQR2W392MSEGBB?

The LQR2W392MSEGBB positions itself as a purpose-built capacitor for industrial power electronics that demand high-voltage energy storage, strong ripple-current capability, and proven endurance under thermal and cyclical stress. Its screw-terminal radial can package and measurable specifications make it straightforward to integrate into DC bus, regenerative, and rectifier circuits.

This capacitor is ideal for engineers and procurement teams specifying components for inverters, servo drives, and industrial power systems where predictable long-term electrical performance and serviceable connections are priorities. Its documented endurance, leakage current limits, and RoHS compliance provide clear, verifiable attributes to support reliable system design and lifecycle planning.

Request a quote or contact sales to discuss pricing, lead time, and volume availability for the LQR2W392MSEGBB and to obtain supporting test and application information tailored to your design requirements.