LNUN7272MSEH

The LNUN7272MSEH is a screw-terminal aluminum electrolytic capacitor in Nichicon’s LNU series, rated for 525 V DC and 2700 µF capacitance. Designed for industrial power electronics, it provides high-voltage energy storage in a compact radial can with screw terminals for secure, high-current connections.

Its construction and specifications target inverter circuitry and high-frequency regenerative environments such as AC servomotor drives and general inverters, offering long life at elevated temperature and robust charge–discharge endurance.

Key Features

• High Voltage / High Capacitance — Rated voltage up to DC 525 V with 2700 µF capacitance for bulk energy storage in industrial power supplies and inverter circuits.
• Screw Terminal Mounting — Radial can with screw terminals and M5 bolt accommodation for reliable, low-resistance connections in power systems.
• Wide Operating Temperature — Specified for operation from –40 °C to +105 °C, suitable for demanding industrial environments.
• Long Load Life — Endurance rated at 5000 hours when DC bias plus rated ripple current is applied at 105 °C, ensuring sustained performance under heavy use.
• High Ripple and HF Performance — Ripple current capability of 10.6 A at 120 Hz and 14.84 A at 10 kHz, designed for high-frequency regenerative voltages and fast charge–discharge cycles.
• Robust Electrical Characteristics — Leakage current limited to not more than 3√(C·V) µA or 5 mA (whichever is smaller) after 5 minutes at 20 °C; insulation resistance over 100 MΩ at DC 500 V; AC 2500 V voltage proof between terminal and bracket for 1 minute.
• Charge–Discharge Endurance — Specified to meet performance requirements after 50 million charge–discharge cycles (3 Hz) with voltage swing near rated voltage, supporting frequent regenerative events.
• Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Inverter Power Supplies — Bulk energy storage and smoothing in industrial inverter front-ends, leveraging the 525 V rating and high ripple capability.
• AC Servomotor Drives — Support for high-frequency regenerative voltages and rapid charge–discharge cycles in motor control systems.
• Industrial Power Electronics — Energy buffering and DC link applications in industrial power supplies where high voltage, long life, and secure screw-terminal connections are required.

Unique Advantages

• High-voltage, compact form factor: 525 V rating with 2700 µF capacitance in a smaller-sized LNU-series package reduces board space while delivering required energy density.
• Screw-terminal reliability: M5-compatible screw terminals enable secure, low-impedance connections for high-current applications and simplify field installation and maintenance.
• Engineered for high-frequency use: Elevated ripple current ratings at both low and high frequencies support regenerative and high-speed charge–discharge demands.
• Thermal and life endurance: Rated for –40 °C to +105 °C operation with a 5000-hour load-life specification at 105 °C under rated ripple, offering predictable long-term performance in harsh environments.
• Electrical robustness: Defined leakage, insulation resistance, and voltage-proof characteristics provide verifiable margins for safety and system design.
• Series pedigree: Part of Nichicon’s LNU family, noted for high-voltage capability and reduced size relative to comparable LNT-series parts.

Why Choose LNUN7272MSEH?

LNUN7272MSEH is positioned for engineers and procurement teams developing industrial inverter and motor-drive systems that require high-voltage energy storage with reliable, serviceable connections. Its combination of 525 V rating, 2700 µF capacitance, screw-terminal mounting and demonstrated endurance at 105 °C makes it suitable where continuous ripple loading and frequent regenerative events occur.

Choosing this part supports durable system behavior over long operating periods, simplifies power-stage connectivity, and provides clear, measurable electrical and thermal specifications to inform design and validation efforts.

Request a quote or submit a sales inquiry to evaluate LNUN7272MSEH for your next power electronics design. Include your quantity and application details to receive tailored pricing and availability information.