LNUN7182MSEGBN

The LNUN7182MSEGBN is a screw‑terminal aluminum electrolytic capacitor optimized for high‑voltage industrial power applications. It delivers 1.8 mF capacitance at a rated DC voltage of 525 V in a compact radial can with screw terminals, designed for inverter circuitry and high‑frequency regenerative circuits.

Engineered for robust operation up to 105°C, this capacitor offers long load life and high‑speed charge‑discharge capability suited to AC servomotor drives, general inverters, and industrial power supplies.

Key Features

• Capacitance & Voltage — 1.8 mF (1800 µF) nominal capacitance with a rated voltage of DC 525 V; capacitance tolerance ±20% (120 Hz, 20°C).
• High‑Temperature Endurance — Rated for operation from −40°C to +105°C with a specified load life of 5000 hours at 105°C under rated ripple conditions.
• High‑Frequency Performance — Designed for high‑frequency regenerative voltages and coping with high‑speed charge/discharge; ripple current capability of 8 A at 120 Hz and 11.2 A at 10 kHz.
• Robust Packaging & Mounting — Radial can with screw terminals for secure electrical and mechanical attachment; bracket supplied separately per datasheet notes.
• Reliability & Endurance Tests — Meets endurance and shelf‑life criteria including charge‑discharge endurance (50 million cycles at ΔV = rated voltage ±0.3, 3 Hz) and defined leakage current limits after voltage application.
• Environmental Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies (Inverter Circuitry) — Provides bulk energy storage and smoothing for inverter DC buses operating at high voltage.
• AC Servomotor Drives — Handles high‑frequency regenerative voltage and rapid charge/discharge cycles in servo and motion control systems.
• General Inverters — Suited for energy buffering and ripple suppression in variable frequency drives and power conversion equipment.
• High‑Speed Charge‑Discharge Circuits — Designed to cope with repeated fast charge/discharge events as specified by the datasheet endurance tests.

Unique Advantages

• High Voltage Capability: Rated up to DC 525 V to support elevated DC bus voltages without series stacking.
• Compact High‑Voltage Design: Marketed as smaller sized than the LNT series while maintaining high‑voltage performance, helping save board or enclosure space.
• High Ripple Handling: Rated ripple currents (8 A at 120 Hz, 11.2 A at 10 kHz) reduce the need for parallel capacitors in many designs.
• Long High‑Temperature Life: 5000 hours at 105°C under rated ripple delivers predictable lifetime for industrial applications.
• Durability Under Cycling: Verified endurance for 50 million charge‑discharge cycles provides resilience in regenerative and pulsed‑power applications.
• RoHS Compliance: Meets current RoHS directives for environmentally constrained designs.

Why Choose LNUN7182MSEGBN?

The LNUN7182MSEGBN pairs high nominal capacitance and a 525 V rating with a screw‑terminal radial can that is optimized for demanding industrial power systems. Its combination of high ripple capability, long life at 105°C, and proven charge‑discharge endurance makes it well suited to inverter circuitry, servo drives, and other high‑frequency regenerative applications.

This capacitor is targeted at engineers and procurement teams designing robust, high‑voltage power electronics who need reliable bulk energy storage and high‑speed cycling performance in a compact package, backed by clear endurance and leakage specifications.

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