LNUN7472MSEJBB

The LNUN7472MSEJBB is a screw‑terminal aluminum electrolytic capacitor from Nichicon’s LNU series, rated 4700 µF at DC 525 V and specified for operation to 105°C. It is designed for industrial power electronics where high voltage, compact size and long operational life are required.

Typical use cases include industrial power supplies and inverter circuitry such as general inverters and AC servomotor drives, including high‑frequency regenerative voltage applications and high‑speed charge‑discharge loading.

Key Features

• Rated Capacitance and Voltage: 4.7 mF (4700 µF) at DC 525 V, providing high energy storage for high‑voltage power circuits.
• High Temperature Endurance: Designed for operation from −40°C to +105°C with a load life of 5000 hours at 105°C under rated ripple conditions.
• Ripple Current Capability: Handles 15.2 A at 120 Hz and 21.28 A at 10 kHz, supporting both low‑ and high‑frequency ripple environments.
• Screw Terminal Mounting: Radial can with screw terminals for secure, low‑impedance connections in industrial assemblies.
• Compact, High‑Voltage Form Factor: LNU series offers a smaller high‑voltage footprint than comparable models, with part dimensions L: 13.5 cm × D: 9.0 cm and a seated height up to 5.315 in.
• Polarized Design & Tolerance: Polar capacitor with ±20% capacitance tolerance (120 Hz, 20°C).
• Leakage Current Specification: After 5 minutes at rated voltage, leakage current is ≤ 3√CV (µA) or 5 mA, whichever is smaller (at 20°C).
• Electrical Robustness: Insulation resistance >100 MΩ at DC 500 V between terminal and bracket, and voltage proof of AC 2500 V for 1 minute between terminal and bracket.
• RoHS Compliance: Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Inverters: Energy storage and filtering in inverter power stages for motor drives and industrial converters.
• AC Servomotor Drives: Smoothing and regenerative energy buffering for servomotor control systems handling high‑frequency regeneration.
• High‑Frequency Regenerative Circuits: With high ripple current capability and endurance, suited for circuits that experience frequent charge‑discharge cycles.
• General Power Supplies: Bulk energy reservoir and ripple suppression in high‑voltage industrial power supplies.

Unique Advantages

• High‑Voltage Capability: Rated up to 525 V DC to meet elevated bus voltage requirements in industrial power electronics.
• Compact High‑Voltage Design: LNU series delivers a smaller high‑voltage can compared with previous designs, helping save board and enclosure space.
• Designed for Long Life at Elevated Temperature: 5000 hours endurance at 105°C under rated ripple ensures durability in demanding thermal environments.
• High Ripple and Frequency Performance: Specified ripple currents at 120 Hz and 10 kHz support both mains‑frequency and high‑frequency applications.
• Secure, Low‑Impedance Termination: Screw terminals provide reliable mechanical and electrical connection for heavy current paths.
• Proven Electrical Safety Margins: Insulation resistance and voltage proof ratings between terminal and bracket support robust system design.

Why Choose LNUN7472MSEJBB?

The LNUN7472MSEJBB positions itself as a high‑voltage, compact aluminum electrolytic solution for industrial power electronics where space, thermal endurance and ripple handling matter. Its 4700 µF capacitance at 525 V, combined with a 5000‑hour life at 105°C and strong ripple current capability, makes it suitable for inverter stages, regenerative drives and other high‑stress power circuits.

Engineers specifying this capacitor benefit from a polarized, screw‑terminal package designed for secure installation and reliable long‑term performance, plus RoHS compliance for regulatory alignment in industrial systems.

If you need a quote or further product information for design and procurement, submit a request and our team will respond with pricing and availability details.