LNU2H392MSEJ

The LNU2H392MSEJ is a screw‑terminal aluminum electrolytic capacitor designed for high‑voltage industrial power applications. This 3.9 mF, 500 V polarized capacitor is rated for operation to 105°C and is optimized for inverter and regenerative circuits where high voltage, high ripple and rapid charge‑discharge loading are required.

Built for demanding power stages, the LNU series targets industrial power supplies, AC servomotor regen circuits and general inverters. Key value attributes include high voltage capability up to DC525 V in the series, compact sizing versus comparable high‑voltage types, and a 5000‑hour load life at 105°C under rated ripple conditions.

Key Features

• Capacitance & Voltage: 3.9 mF (3900 µF) nominal capacitance with a rated voltage of 500 V (series rated up to DC525 V).
• Screw‑Terminal Package: Radial, can style with screw terminals for robust electrical and mechanical connection in industrial assemblies.
• High Temperature Operation & Life: Rated for –40°C to +105°C with a specified load life of 5000 hours at 105°C under DC bias plus rated ripple current.
• High Ripple Handling: Ripple current capability of 12.4 A at 120 Hz and 17.36 A at 10 kHz to support both low‑ and high‑frequency power stages.
• Charge‑Discharge Endurance: Designed to withstand high‑speed charge/discharge loading; meets endurance requirements after 50 million charge/discharge cycles (ΔV = rated voltage ±0.3, 3 Hz).
• Electrical Integrity: Leakage current after 5 minutes is limited to 3√(C·V) µA or 5 mA, whichever is smaller; insulation resistance >100 MΩ at DC 500 V; voltage proof AC 2500 V for 1 minute between terminal and bracket.
• Size & Mounting: Compact footprint for its voltage class — dimensions L: 10.5 × D: 9 cm, with mounting via screw terminals and supplied bracket options.
• RoHS Compliance: Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies: Energy storage and smoothing in inverter front‑ends and high‑voltage DC bus circuits.
• Inverter & Motor Drives: Handling regenerative voltage and high‑frequency ripple in AC servomotor and general inverter systems.
• High‑speed Charge/Discharge Systems: Applications requiring rapid pulse handling and frequent charge/discharge cycles.

Unique Advantages

• High‑Voltage Capability: Rated at 500 V with series coverage to DC525 V, enabling use in higher‑voltage industrial power rails.
• Compact for Its Class: Smaller physical size compared with comparable high‑voltage types in the LNU series, easing integration in constrained power racks.
• Designed for Heavy Ripple Loads: Specified ripple current at both 120 Hz and 10 kHz supports low‑ and high‑frequency power stages without derating design margins.
• Proven Thermal Endurance: 5000‑hour life at 105°C under rated conditions provides predictable long‑term behavior in hot industrial environments.
• Robust Mechanical Termination: Screw terminals and bracket mounting support secure electrical connection and ease of replacement or servicing.

Why Choose LNU2H392MSEJ?

LNU2H392MSEJ combines high voltage, substantial capacitance and mechanical robustness in a screw‑terminal aluminum electrolytic designed specifically for industrial inverter and regenerative power applications. Its rated performance at elevated temperature, high ripple capacity and charge/discharge endurance make it suitable for designers who need reliable bulk energy storage on high‑voltage DC buses.

This capacitor is well suited to engineers and procurement teams building industrial drives, inverters and power supply systems that require predictable lifetime, strong ripple handling and RoHS compliance. The LNU2H392MSEJ provides a clear specification set for long‑term system stability and maintainability.

Request a quote or contact sales to discuss pricing, availability and application support for the LNU2H392MSEJ.