LNUN7472MSEJ

The LNUN7472MSEJ is a screw‑terminal aluminum electrolytic capacitor from Nichicon’s LNU series, offering high voltage capability in a compact can‑style package. Designed for industrial power electronics, it targets inverter circuitry and high‑frequency regenerative systems where high capacitance, high ripple handling and long endurance at elevated temperatures are required.

Key Features

• Capacitance & Voltage — 4.7 mF (4700 µF) rated at DC 525 V with ±20% tolerance, providing significant energy storage for high‑voltage power rails.
• High Ripple Current Handling — Low‑frequency ripple current 15.2 A (120 Hz) and high‑frequency ripple current 21.28 A (10 kHz), suitable for heavy ripple loads and rapid charge/discharge cycles.
• Endurance & Temperature — 5000 hours rated life at 105 °C and an operating temperature range of −40 °C to +105 °C for robust performance in demanding environments.
• Low Loss & Leakage — Specified tangent of loss angle (tan δ) of 0.2 and measured leakage current of 4710 µA, enabling predictable dissipation and standby behavior.
• Mounting & Package — Screw terminal radial can package (φ90 × 135L; 13.5 × 9 cm), designed for secure bolted connections in power assemblies.
• Compliance & Packaging — RoHS‑compliant and supplied in cardboard packing; available in mass production quantities.

Typical Applications

• Industrial Power Supplies — Energy storage and smoothing for high‑voltage DC rails in industrial converters and power supplies.
• Inverter & Motor Drive Systems — Bulk and buffering capacitor for inverter circuits and AC servomotor drives handling regenerative and high‑frequency voltages.
• Regenerative Drives — Supports high‑speed charge/discharge cycles and regenerative voltage handling in drive systems.
• General Purpose Power Filtering — Bulk filtering and decoupling where high capacitance and high voltage tolerance are required.

Unique Advantages

• High voltage in a compact can — 525 V rating in the LNU form factor delivers large capacitance without excessive enclosure size.
• Designed for heavy ripple loads — High ripple current ratings at both low and high frequencies reduce temperature rise and extend service life under pulsating loads.
• Long high‑temperature life — 5000 hours endurance at 105 °C provides predictable long‑term performance in hot operating environments.
• Screw‑terminal reliability — Robust screw terminal mounting enables secure electrical and mechanical connections in industrial assemblies.
• Measured electrical characteristics — Specified tan δ and leakage current figures support engineering evaluation and thermal budgeting.
• RoHS‑compliant, production ready — Lead‑free compliance and mass production availability simplify sourcing and design integration.

Why Choose LNUN7472MSEJ?

The LNUN7472MSEJ combines high capacitance and a 525 V rating with durable screw‑terminal packaging, making it a practical choice for industrial power systems, inverter circuits and regenerative drive applications that demand large energy storage and high ripple tolerance. Its 5000‑hour life at 105 °C, defined loss and leakage parameters, and RoHS compliance deliver predictable, engineer‑friendly performance for long‑term designs.

This part is well suited to design teams and procurement engineers building robust power electronics where measurable electrical characteristics, secure mounting and production availability are essential.

Request a quote or submit a procurement inquiry to obtain availability, lead time and pricing for LNUN7472MSEJ.