LNU2G332MSEHBB

The LNU2G332MSEHBB is a screw-terminal aluminum electrolytic capacitor designed for high-voltage industrial power applications. This radial can package delivers 3300 µF at a 400 V rating and is optimized for inverter circuitry, high-frequency regenerative voltage for AC servomotors, and general inverter systems.

Built for demanding environments, the LNU series supports rated voltages up to DC525 V, a wide operating temperature range of –40°C to +105°C and a load life of 5000 hours at 105°C, offering stable performance under sustained ripple and charge–discharge loading.

Key Features

• Capacitance & Voltage: 3300 µF nominal capacitance with a 400 V rated voltage and ±20% tolerance (120 Hz, 20°C).
• Screw-Terminal Package: Radial can with screw terminals for robust electrical and mechanical connection; nominal bolt size for the 76.2 mm diameter variant is M5.
• High-Temperature Endurance: Load life of 5000 hours at 105°C with rated ripple current applied, designed for continuous high-temperature operation.
• Ripple Current Handling: 13.1 A at 120 Hz and 18.34 A at 10 kHz, supporting high ripple and high-frequency load conditions.
• Wide Operating Range: Specified operation from –40°C to +105°C to cover industrial ambient conditions.
• Compact High-Voltage Design: High-voltage capability in a smaller footprint compared to previous LNT series designs; physical size is approximately 75 mm length × 76.2 mm diameter (L: 7.5 × D: 7.62 cm).
• Electrical Reliability: Leakage current limited to 3√CV µA or 5 mA after 5 minutes (whichever is smaller), insulation resistance >100 MΩ at DC 500 V, and voltage proof of AC 2500 V for 1 minute between terminal and bracket.
• Charge–Discharge Endurance: Designed to meet performance requirements after 50 million charge–discharge cycles (cycle 3 Hz), supporting high-speed cycling applications.

Typical Applications

• Industrial Power Supplies: Bulk energy storage and smoothing for inverter front-ends and high-voltage DC link circuits.
• Inverter Drives: Support for motor-drive inverters where high-voltage, high-ripple capacitors are required for stable DC bus performance.
• AC Servomotor Regeneration: Handling high-frequency regenerative voltages and fast charge–discharge events in servo and motion-control systems.
• High-Frequency Power Systems: Applications that demand sustained ripple current at higher frequencies (e.g., 10 kHz) and robust thermal endurance.

Unique Advantages

• High-Voltage Capability: 400 V nominal rating (series rated up to DC525 V) enables use in high-voltage DC link and inverter applications without up-rating components.
• Robust Ripple Performance: Specified ripple currents at both 120 Hz and 10 kHz provide designers measurable margins for thermal and electrical stress planning.
• Long-Term Thermal Endurance: 5000 hours at 105°C load life supports continuous operation in elevated-temperature enclosures.
• Durable Mechanical Termination: Screw terminals and M5 nominal bolt accommodation ensure secure mounting and straightforward assembly for industrial hardware.
• High Cyclability: Rated for extensive charge–discharge cycling (50 million cycles at 3 Hz), suited to regenerative and frequently switched power systems.
• Compact Footprint for Voltage Class: Smaller physical size relative to earlier LNT series versions while maintaining high-voltage performance, aiding space-constrained power designs.

Why Choose LNU2G332MSEHBB?

The LNU2G332MSEHBB combines a high nominal capacitance with a 400 V rating and industrial-grade thermal endurance, making it a practical choice for inverter, servo-regeneration and high-frequency power systems. Its screw-terminal design simplifies installation on DC-link and power-supply assemblies while providing electrical and mechanical robustness.

Engineers and procurement teams designing medium- to high-voltage industrial power systems will find long-term value in the LNU2G332MSEHBB’s measured ripple handling, extensive charge–discharge endurance, and series support up to DC525 V—attributes that support reliable operation and predictable lifecycle planning.

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