LNU2G392MTEG

The LNU2G392MTEG is an aluminum electrolytic, screw‑terminal capacitor from Nichicon’s LNU series. This stud‑bolt, radial can capacitor delivers 3.9 mF capacitance at a 400 V rated voltage and is optimized for high‑temperature, high‑frequency power applications.

Designed for industrial power supplies and inverter circuitry, the component is aimed at applications that require high ripple handling, fast charge/discharge tolerance and long life at elevated temperatures. The LNU series also offers rated voltages up to DC525V for system-level flexibility, while this specific part is specified at 400 V.

Key Features

• Capacitance & Voltage — 3.9 mF nominal capacitance with a rated voltage of 400 V (part-specific) and ±20% tolerance.
• High‑Temperature Rating — Rated for continuous operation from −40°C to +105°C, supporting demanding thermal environments.
• Long Life at Elevated Temperature — 5000 hours load life when subjected to rated ripple current at 105°C, supporting reliability in continuous operation.
• High Ripple Capability — Ripple current ratings of 14.6 A at 120 Hz and 20.44 A at 10 kHz, enabling robust filtering and DC link stabilization under heavy AC ripple conditions.
• Stud Bolt Mounting — Screw terminal (stud bolt) radial can package with M5 nominal bolt diameter for secure mechanical and electrical connections.
• Compact Form Factor — Smaller sized design within the LNU family (dimensions: L 10 × D 6.35 cm; seated height max 3.937 inch), suitable where board/space constraints exist.
• Polarized, Industrial Grade — Polarized aluminum electrolytic design intended for general industrial power applications, including inverter/regenerative circuits.

Typical Applications

• Industrial Power Supplies — Bulk energy storage and smoothing in inverter front‑ends and industrial DC bus systems where high ripple capacity and high voltage handling are required.
• AC Servomotor Drives — Regenerative and DC link buffering in servo drives, benefiting from high‑frequency ripple handling and high‑temperature endurance.
• General Inverters and Motor Drives — Energy buffering and transient suppression in inverter stages, leveraging long life at 105°C and robust charge/discharge tolerance.
• High‑Speed Charge/Discharge Circuits — Circuits requiring rapid energy exchange, using the capacitor’s design for high‑speed charge/discharge loading.

Unique Advantages

• High‑voltage capability (series‑level) — The LNU series supports rated voltages up to DC525V, while this part provides a 400 V rating for many industrial DC bus designs.
• Robust ripple performance — Specified ripple currents at both 120 Hz and 10 kHz allow predictable thermal and electrical behavior across low and high frequency ripple environments.
• Designed for high‑temperature operation — 105°C continuous rating and a 5000‑hour load life at rated ripple current enable dependable performance in elevated ambient conditions.
• Secure mechanical mounting — Screw terminal (stud bolt) construction with M5 nominal bolt size ensures reliable electrical connection and mechanical retention in industrial assemblies.
• Compact size for the voltage class — Smaller physical footprint compared with larger high‑voltage options in the LNU family, aiding in tighter system layouts.

Why Choose LNU2G392MTEG?

LNU2G392MTEG targets industrial designs that demand high‑voltage smoothing, strong ripple tolerance and long operational life at elevated temperatures. Its screw‑terminal mechanical design and compact can package simplify integration into inverter DC links, servo drive regenerative circuits and other high‑power industrial systems.

For engineers and procurement teams designing robust power electronics, this part offers a balance of capacitance, ripple capability and thermal endurance that supports reliable system operation and predictable maintenance cycles.

Request a quote or contact sales to discuss pricing, availability and how LNU2G392MTEG can meet your design requirements. Our team can provide lead‑time details and help with volume or technical inquiries.