LNUN7272MSEHBB

The LNUN7272MSEHBB is a high-voltage aluminum electrolytic capacitor in a screw-terminal radial can package. It delivers 2.7 mF (2700 µF) capacitance at a rated DC voltage of 525 V and is designed for heavy-duty industrial power applications.

Engineered for inverter circuitry and high-frequency regenerative voltage environments such as AC servomotor drives and general inverters, this capacitor combines high-voltage capability, compact sizing within the LNU series, and extended high-temperature life for reliable power-stage performance.

Key Features

• Capacitance and Voltage — 2.7 mF (2700 µF) rated at DC 525 V, providing substantial energy storage for high-voltage power stages.
• High-temperature endurance — Rated for operation from −40°C to +105°C with a specified load life of 5000 hours at 105°C under applied ripple current.
• Ripple current capability — Handles 10.6 A at 120 Hz and 14.84 A at 100 kHz, supporting both low- and high-frequency ripple conditions in power-conversion circuits.
• Screw-terminal, radial can package — Robust screw-terminal mounting with M5 nominal bolt size used in the series for secure electrical and mechanical connections; bracket supplied separately.
• Electrical stability and reliability — Leakage current after 5 minutes at rated voltage is limited to 3√(C·V) µA or 5 mA (whichever is smaller); insulation resistance exceeds 100 MΩ at DC 500 V between terminal and bracket, and the part withstands AC 2500 V for 1 minute without abnormality.
• Endurance and charge–discharge robustness — LNU-series capacitors meet endurance requirements after long-term bias and ripple exposure and withstand extensive charge–discharge cycling (50 million cycles specified for the series).
• Form factor — Smaller sized in the LNU series compared to LNT, with physical dimensions L: 11.5 cm × D: 7.62 cm and a maximum seated height of 4.528 inch for compact high-voltage designs.

Typical Applications

• Industrial inverter power supplies — Energy buffering and DC-link smoothing in inverter front ends for reliable power conditioning.
• AC servomotor drives — Handling high-frequency regenerative voltage and transient charge–discharge loads encountered in servo systems.
• Regenerative braking circuits — Absorbing and supplying energy during high-speed charge–discharge events in regenerative power stages.
• High-frequency power stages — Supporting elevated ripple currents at kHz-range switching frequencies thanks to specified ripple ratings at 100 kHz.

Unique Advantages

• High-voltage, compact design: 525 V rating combined with a smaller footprint in the LNU series enables higher voltage designs where board space and height constraints matter.
• Extended high-temperature life: 5000 hours at 105°C under rated ripple current gives long-term stability in demanding thermal environments.
• High ripple-current handling: Specified ripple current at both 120 Hz and 100 kHz supports a wide range of switching and mains-frequency power topologies.
• Charge–discharge durability: Series-specified endurance through extensive charge–discharge cycling addresses high-speed load changes and regenerative events.
• Robust mechanical termination: Screw-terminal construction (M5 nominal bolt in the series) provides secure electrical connections for high-current, industrial installations.
• RoHS compliant: Meets RoHS directive requirements for environmental compliance.

Why Choose LNUN7272MSEHBB?

LNUN7272MSEHBB is positioned for engineers designing high-voltage industrial power systems who need reliable energy storage, high ripple performance, and long-term endurance at elevated temperatures. Its screw-terminal radial can packaging and series-proven electrical characteristics make it suitable for inverter DC-link, regenerative, and high-frequency power-stage applications.

Choosing this Nichicon LNU-series part provides measurable attributes—525 V rating, 2.7 mF capacitance, defined ripple-current specs, and 5000-hour life at 105°C—that help ensure predictable performance and durability in demanding industrial environments.

Request a quote or contact sales to discuss LNUN7272MSEHBB pricing, availability, and how it can fit into your high-voltage power design.