LNU2G392MSEH

The LNU2G392MSEH is an aluminum electrolytic capacitor in Nichicon's LNU series, designed as a screw-terminal, high-voltage capacitor for industrial power electronics. It combines a 3.9 mF capacitance with a 400 V rated voltage and a compact, radial can package with screw terminals for secure connections.

Targeted at inverter circuitry and regenerative systems, this capacitor offers a high operating temperature rating and long load life to support high ripple and fast charge–discharge demands in industrial power supplies and motor drive applications.

Key Features

• High voltage, specific rating: Rated voltage 400 V to meet high-voltage DC bus requirements for inverter and power-supply designs.
• Capacitance: 3.9 mF nominal capacitance with ±20% tolerance (120 Hz, 20°C) for bulk energy storage and smoothing.
• Screw-terminal radial can package: Robust screw terminals and radial can construction for secure, low-impedance connections in industrial assemblies.
• High-temperature capability: Operates from −40°C to +105°C and specified for a 5000-hour load life at 105°C under rated ripple conditions.
• High ripple-current handling: Rated ripple current 14.3 A at 120 Hz and 20.02 A at 10 kHz to support high-frequency inverter and regenerative loads.
• Charge–discharge endurance: Designed to cope with high-speed charge–discharge cycles and high-frequency regenerative voltages for motor drives and inverters.
• Compact footprint: Smaller-sized design (smaller than LNT series) with dimensions L: 8.5 cm × D: 7.62 cm and a seated height up to 3.346 inches for space-constrained power modules.
• Polarized device with reliability specs: Polar capacitor with defined leakage current limits and insulation resistance characteristics suitable for industrial use.
• RoHS compliant: Meets RoHS directive requirements (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial power supplies: Bulk energy storage and DC link smoothing in inverter-fed power supplies where high ripple current and elevated temperature performance are required.
• AC servomotor and drive systems: Handles high-frequency regenerative voltages and fast charge–discharge cycles in motor drive regenerative circuits.
• General inverter systems: Supports DC bus decoupling and energy buffering in general-purpose inverter designs.

Unique Advantages

• High ripple capability: Measurable ripple-current ratings at both 120 Hz and 10 kHz provide quantifiable performance for designers addressing AC and high-frequency loads.
• Long high-temperature life: 5000-hour load life at 105°C gives predictable aging and endurance for demanding industrial environments.
• Screw-terminal connectivity: Provides mechanically secure, low-resistance connections suited to high-current DC bus applications.
• Compact, high-voltage form factor: Smaller-sized than the LNT series while supporting high-voltage operation, helping reduce PCB and enclosure footprint.
• Wide operating temperature range: −40°C to +105°C supports a broad range of industrial operating conditions.
• Regulatory compliance: RoHS conformity supports environmental and regulatory requirements for commercial deployments.

Why Choose LNU2G392MSEH?

The LNU2G392MSEH delivers a balance of high-voltage capability, substantial capacitance, and robust ripple-current performance in a screw-terminal aluminum electrolytic package. Its 105°C rating and 5000-hour load-life specification make it well suited to industrial inverter, regenerative drive, and power-supply applications that demand stable bulk energy storage under elevated temperature and high-frequency loading.

This part is ideal for engineers designing DC link and energy-buffer stages in motor drives and industrial power electronics where secure terminal connections, compact high-voltage components, and defined endurance characteristics are required.

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