LNU2H392MSEJBN

The LNU2H392MSEJBN from Nichicon is a screw‑terminal aluminum electrolytic capacitor designed for high‑voltage industrial power systems. It is a polarized, radial can capacitor rated for DC 500 V with a capacitance of 3.9 mF, optimized for inverter and regenerative power circuitry.

Engineered for demanding thermal and electrical conditions, this capacitor supports continuous operation from −40°C to +105°C and is intended for use in industrial power supplies, AC servomotor drives, general inverters and other high‑frequency regenerative voltage applications.

Key Features

• Electrical Rating — Rated voltage DC 500 V and capacitance 3.9 mF with ±20% tolerance (120 Hz, 20°C), suitable for high‑voltage power rails.
• High Temperature Endurance — Specified operating range −40°C to +105°C and load life of 5000 hours at 105°C under applied ripple current.
• High Ripple Capability — Ripple current capacity of 12.4 A at 120 Hz and 17.36 A at 10 kHz, supporting high‑frequency and high‑ripple environments.
• Charge/Discharge Durability — Designed to cope with high‑speed charge–discharge loading and endurance of charge–discharge behavior tested for 50 million cycles (3 Hz, ΔV = rated voltage ±0.3).
• Leakage and Insulation — Leakage current after 5 minutes is limited to 3√CV (μA) or 5 mA (whichever is smaller); insulation resistance greater than 100 MΩ at DC 500 V between terminal and bracket.
• Robust Voltage Proof — Withstands AC 2500 V for 1 minute between terminal and bracket without abnormality.
• Package and Mounting — Radial, can package with screw terminals for secure, high‑current connections and easy field assembly; physical size L: 10.5 × D: 9 cm.
• Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Inverters — Bulk and smoothing capacitor for inverter power stages where DC 500 V ratings and high ripple endurance are required.
• AC Servomotor Drives — Energy buffering and regenerative voltage handling in servo amplifiers and motor-control power supplies.
• Regenerative Power Circuits — High‑frequency regenerative voltage applications that demand frequent charge/discharge cycles and high ripple capability.
• High‑Power Industrial Power Supplies — Filtering and energy storage in power supplies for industrial equipment that operate at elevated temperatures.

Unique Advantages

• High‑Voltage, High‑Capacity Combination — 3.9 mF capacitance at DC 500 V provides substantial energy storage for high‑voltage power rails without parallel components.
• Designed for Elevated Temperatures — 5000‑hour load life at 105°C ensures predictable performance in hot industrial environments, reducing replacement frequency.
• High Ripple and High‑Frequency Performance — Specified ripple currents at 120 Hz and 10 kHz enable use in both low‑ and high‑frequency switching applications.
• Durable Mechanical Connection — Screw terminal mounting provides reliable, low‑impedance connections for high‑current paths and straightforward installation or maintenance.
• Proven Charge/Discharge Endurance — Validation for tens of millions of charge/discharge cycles supports regenerative and fast‑cycling power topologies.
• Regulatory Compliance — RoHS compliance supports deployment in regions and systems with restricted-substance requirements.

Why Choose LNU2H392MSEJBN?

The LNU2H392MSEJBN positions itself as a robust, high‑voltage aluminum electrolytic solution for industrial power electronics where elevated temperature tolerance, high ripple capability, and charge/discharge durability are essential. Its screw‑terminal radial can package and substantial capacitance at 500 V make it suitable for inverter supplies, servo drives, and regenerative circuits that demand reliable energy storage under heavy electrical stress.

For engineers and procurement teams designing or maintaining industrial power systems, this part delivers a balance of voltage rating, thermal endurance, ripple handling and mechanical robustness—backed by measurable lifetime and leakage specifications and RoHS compliance for regulatory alignment.

Request a quote or contact sales to discuss availability, pricing and how LNU2H392MSEJBN can be integrated into your power design.