LNU2H392MSEH

The LNU2H392MSEH is an aluminum electrolytic capacitor in a screw-terminal radial can package designed for industrial power electronics. With a 3.9 mF capacitance and a 500 V DC rating, it targets inverter circuitry and high-frequency regenerative circuits such as AC servomotor and general inverter applications.

Built for robust operation up to 105°C and a rated load life of 5000 hours under ripple current, this part delivers high-voltage performance, elevated ripple handling and secure screw-terminal mounting for reliable power-system integration.

Key Features

• Capacitance & Voltage — 3.9 mF nominal capacitance with a 500 V DC rated voltage and ±20% tolerance, suitable for high-voltage energy storage in power conversion circuits.
• High-temperature Endurance — Designed for operation from −40°C to +105°C with a specified load life of 5000 hours at 105°C when ripple current is applied.
• High Ripple Current Capability — Handles 12.4 A ripple at 120 Hz and 17.36 A at 10 kHz, enabling use in both line-frequency and high-frequency inverter environments.
• Charge–Discharge Endurance — Engineered to withstand high-speed charge–discharge loading; series data includes endurance for repeated charge–discharge cycles to support regenerative applications.
• Mounting & Mechanical — Screw terminal, radial can package provides secure, serviceable connections for industrial power assemblies; dimensions: L 14.5 × D 7.62 cm with a seated height specification.
• Leakage & Insulation — Leakage current after 5 minutes is limited to 3√CV (µA) or 5 mA (whichever is smaller) at 20°C; insulation resistance exceeds 100 MΩ at DC 500 V between terminal and bracket.
• RoHS Compliant — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863) for restricted substances.

Typical Applications

• Industrial Power Supplies — Bulk energy storage and smoothing in inverter power supplies where high-voltage DC bus capacitance is required.
• Inverter Circuitry — DC link and filtering in general inverter designs that demand high ripple capability and sustained operation at elevated temperatures.
• AC Servomotor Regeneration — High-frequency regenerative voltage absorption and rapid charge–discharge support for servo drive systems.
• High-frequency Power Electronics — Applications that require stable performance under high-frequency ripple, leveraging specified ripple current at 10 kHz.

Unique Advantages

• High-voltage capability: 500 V DC rating provides the headroom needed for high-voltage DC bus applications in industrial drives and inverters.
• Robust high-temperature life: 5000-hour rated load life at 105°C under ripple current supports long-term operation in thermally demanding environments.
• Elevated ripple handling: Explicit ripple current ratings at both 120 Hz and 10 kHz ensure predictable thermal and electrical performance across common power-electronics frequencies.
• Secure screw-terminal mounting: Screw terminals offer durable, serviceable connections for assembly and maintenance in industrial systems.
• Designed for fast charge–discharge loads: Engineered to cope with high-speed charge–discharge behaviour, suitable for regenerative and pulsed-power use cases.
• RoHS compliance: Meets applicable restricted-substance directives for use in regulated supply chains.

Why Choose LNU2H392MSEH?

The LNU2H392MSEH positions itself as a high-voltage, high-ripple aluminum electrolytic solution for industrial power-conversion systems. Its 3.9 mF capacitance at 500 V DC, combined with rated operation to 105°C and a 5000-hour load life, addresses the reliability and thermal demands of inverter and regenerative circuits.

This part is suitable for designers and procurement teams building robust inverter power supplies, servo drives, and other high-frequency power electronics where secure screw-terminal connections, predictable ripple performance and long-term endurance are required. RoHS compliance and explicit leakage and insulation specifications simplify qualification for industrial applications.

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