LQR2W392MSEG

The LQR2W392MSEG is a screw-terminal aluminum electrolytic capacitor designed for high-voltage DC link and regenerative energy applications. It provides 3.9 mF (3900 µF) capacitance at a 450 V rating with polarized construction and screw-terminal mounting for secure, low-resistance power connections.

Engineered for industrial power systems, this capacitor is suited to high-frequency regenerative voltage in AC servomotors, general inverters, rectifier circuits using voltage doubler topology, and equipment operating in environments with fluctuating voltages. Key value comes from its high voltage rating, elevated ripple-current capability, and endurance at elevated temperature.

Key Features

• Rated Capacitance and Voltage — 3.9 mF (3900 µF) capacitance at 450 V provides energy storage appropriate for DC bus and regenerative circuits.
• Screw Terminal Mounting — Radial can with screw terminals offers robust mechanical and electrical connection for high-current power systems.
• Ripple Current Performance — 13.7 A at 120 Hz and 19.18 A at 10 kHz ratings enable handling of substantial ripple and high-frequency regenerative pulses.
• Operating Temperature and Endurance — Rated for operation from −25 °C to +85 °C with an endurance specification of 5000 hours at 85 °C under DC bias plus rated ripple current.
• Charge–Discharge Endurance — Specified to withstand 20 million charge–discharge cycles (ΔV = rated × 0.3, 3 Hz) at room temperature while meeting capacitance, tan δ, leakage, and appearance criteria.
• Leakage Current Specification — After 5 minutes at rated voltage, leakage is limited to not more than 3√(V) µA or 5 mA, whichever is smaller (at 20 °C).
• Capacitance Tolerance — ±20% at 120 Hz, 20 °C for predictable system design and margining.
• RoHS Compliant — Meets RoHS directive (2011/65/EU, (EU)2015/863) for restricted substances.

Typical Applications

• AC servomotor drives (regeneration) — Smooths and absorbs regenerative voltage spikes and high-frequency pulses in servo drive DC links.
• Inverters and general power converters — Provides DC bus energy storage and ripple filtering for industrial frequency inverters and converters.
• Voltage doubler rectifier circuits — Suited for stabilizing and filtering output in rectifier configurations that use voltage doubler topology.
• Industrial equipment in fluctuating-voltage environments — Designed to tolerate voltage fluctuations while maintaining capacitance and leakage performance over rated lifetime.

Unique Advantages

• High voltage capability — 450 V rating enables use on high-voltage DC rails and demanding power systems.
• Robust ripple handling — Specified ripple-current values at both 120 Hz and 10 kHz support performance under low- and high-frequency stress.
• Long-term thermal endurance — 5000 hours at 85 °C under rated conditions gives predictable lifetime in elevated-temperature installations.
• Durable mechanical connection — Screw-terminal radial can package simplifies secure installation and high-current connections.
• Charge–discharge resilience — Designed and specified to maintain performance after extensive charge–discharge cycling relevant to regenerative applications.
• RoHS compliance — Conforms to current restricted-substance requirements for regulated markets.

Why Choose LQR2W392MSEG?

LQR2W392MSEG is positioned for designers needing a high-voltage, high-capacitance electrolytic solution with proven endurance under elevated temperature and repeated charge–discharge cycles. Its screw-terminal package and high ripple-current ratings make it appropriate for industrial power electronics where secure connections and reliable energy buffering are required.

This part is well suited to engineers developing inverters, servo drives, and rectifier circuits that require stable DC link performance in fluctuating voltage environments. The combination of 450 V rating, specified ripple capability, long endurance, and RoHS compliance supports robust, maintainable designs with clear, verifiable specifications.

Request a quote or submit a pricing and availability inquiry to receive detailed lead time and volume pricing for LQR2W392MSEG. Our team can provide the information you need to evaluate this capacitor for your power system design.