LNUN7182MSEGBB

The LNUN7182MSEGBB is a screw‑terminal aluminum electrolytic capacitor designed for high‑voltage industrial power electronics. As part of Nichicon’s LNU series, it delivers 1.8 mF capacitance at a rated DC voltage of 525 V in a compact radial can with screw terminals, targeting inverter and regenerative power circuits.

Engineered for demanding environments, this capacitor is specified for operation from –40 °C to +105 °C, a 5000‑hour load life at 105 °C under rated ripple current, and RoHS compliance for regulated deployments.

Key Features

• High Rated Voltage — Rated up to DC 525 V to support inverter and high‑voltage power supply topologies.
• Nominal Capacitance — 1.8 mF with ±20% tolerance (120 Hz, 20 °C), providing bulk energy storage and smoothing for DC link and regenerative circuits.
• High Temperature Endurance — Load life of 5000 hours at 105 °C when subjected to DC bias plus rated ripple current, ensuring long‑term reliability in hot operating conditions.
• High Ripple Current Capability — Rated ripple currents of 8 A at 120 Hz and 11.2 A at 10 kHz to handle both low‑frequency and high‑frequency ripple in power converters.
• Robust Mechanical Package — Radial can with screw terminals for secure, high‑current connections in industrial assemblies; terminal design supports M5 bolts per series drawing.
• Wide Operating Temperature Range — Specified from –40 °C to +105 °C to accommodate varied industrial environments.
• Safety and Insulation — Insulation resistance greater than 100 MΩ at DC 500 V between terminal and bracket; voltage proof of AC 2500 V for 1 minute between terminal and bracket as per datasheet.
• RoHS Compliant — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Inverters — Bulk DC link and smoothing for inverter power stages where high DC voltage and reliable ripple handling are required.
• AC Servomotor Regeneration — Energy absorption and smoothing for high‑frequency regenerative voltages in servo and motion control systems.
• High‑Speed Charge/Discharge Systems — Suitable for applications that require fast charge/discharge cycles, including pulsed power subsystems.
• General Industrial Power Supplies — Bulk energy storage and filtering in power supplies that operate under elevated temperature and ripple conditions.

Unique Advantages

• High‑Voltage Capacity in a Compact Can — 525 V rating in a smaller footprint compared to larger series, enabling space‑efficient designs.
• Designed for Extended High‑Temperature Operation — 5000 hours at 105 °C under load reduces replacement frequency and maintenance in hot environments.
• Broad Ripple Handling — Specified ripple current at both 120 Hz and 10 kHz supports mixed‑frequency converter topologies without overstressing the capacitor.
• Secure Screw‑Terminal Interface — Robust mechanical connection for reliable current transfer in industrial assemblies and field serviceable installations.
• Measured Insulation and Voltage Proof — Insulation resistance and voltage proof values help ensure dielectric integrity between terminals and mounting bracket.
• Regulatory Compliance — RoHS conformity simplifies use in regulated product lines.

Why Choose LNUN7182MSEGBB?

The LNUN7182MSEGBB combines high DC voltage capability (525 V), substantial bulk capacitance (1.8 mF), and proven endurance at 105 °C to meet the demands of industrial inverter, servo, and high‑frequency regenerative circuits. Its screw‑terminal radial can package and robust ripple ratings make it well suited for power assemblies that require secure connections and sustained performance under thermal and electrical stress.

This part is ideal for engineers designing industrial power supplies and motion control systems who need a high‑voltage, long‑life electrolytic capacitor that is RoHS compliant and specified for both low‑ and high‑frequency ripple environments.

Request a quote or submit an inquiry to discuss availability, lead times, and pricing for the LNUN7182MSEGBB.