LNU2G183MTEJ

The LNU2G183MTEJ is a screw‑terminal, polarized aluminum electrolytic capacitor from Nichicon’s LNU series, designed for industrial power electronics. It provides 18 mF capacitance at a 400 V rating with a 105°C operating temperature range, delivering high‑voltage energy storage in a compact screw‑terminal can suited for inverter and regenerative power applications.

Engineered for demanding load cycles, this part supports high ripple currents and fast charge‑discharge behavior, making it appropriate for inverter circuitry, AC servomotor regenerative circuits and other industrial power supplies where robust high‑frequency performance and long life are required.

Key Features

• Rated Capacitance and Tolerance — 18 mF nominal capacitance with ±20% tolerance (measured at 120 Hz, 20°C), providing predictable energy storage for bulk and smoothing applications.
• Voltage Rating — 400 V DC rated voltage suitable for high‑voltage power stages; series rated voltage range extends up to DC 525 V.
• High Temperature Endurance — Designed for continuous operation from −40°C to +105°C with a specified load life of 5000 hours at 105°C under rated ripple conditions.
• High Ripple‑Current Capability — Handles 38 A at 120 Hz and 53.2 A at 10 kHz, supporting high‑frequency and regenerative currents common in inverter and servo drive systems.
• Screw Terminal / Stud Mount Package — Radial can with screw terminals and stud bolt mounting (nominal bolt diameter M5 in the series) for secure, low‑impedance connections in power assemblies.
• Robust Reliability Metrics — Leakage current specification (after 5 minutes) limited to 3√CV (μA) or 5 mA, insulation resistance >100 MΩ at DC 500 V between terminal and bracket, and AC dielectric proof at 2500 V for 1 minute.
• Charge‑Discharge Endurance — Series rated to endure charge‑discharge cycling (50 million cycles at specified ΔV and 3 Hz) while maintaining capacitance, dissipation factor and leakage within defined limits.
• RoHS Compliant — Conforms to RoHS directives (2011/65/EU, (EU)2015/863) for restricted substances.
• Physical Dimensions — Size dimension listed as L: 23.5 × D: 9 cm (height seated max: 9.252 inch), enabling compact installation in high‑voltage assemblies.

Typical Applications

• Industrial Inverters — Energy storage and smoothing for DC link circuits in general inverter designs, benefiting from high ripple capability and 105°C endurance.
• AC Servomotor Drives — Support for high‑frequency regenerative voltages and fast charge‑discharge cycles common in servo drives.
• Power Supplies for Industrial Equipment — Bulk capacitance and ripple handling for switch‑mode power supplies used in factory automation and process control systems.

Unique Advantages

• High‑Voltage, Compact Form — 400 V rating (series up to 525 V) in a smaller screw‑terminal can delivers high energy density for space‑constrained power racks.
• Designed for High Ripple and HF Operation — Specified ripple currents at both 120 Hz and 10 kHz allow reliable performance across low and high switching frequencies.
• Extended High‑Temperature Life — 5000‑hour load life at 105°C under rated conditions supports long service life in hot operating environments.
• Secure Mechanical and Electrical Connections — Stud bolt mounting with screw terminals and M5 nominal bolt sizing (series) simplifies installation in rugged power assemblies.
• Measurable Reliability Metrics — Clear specifications for leakage, insulation resistance and dielectric proof provide verifiable acceptance criteria for design validation.

Why Choose LNU2G183MTEJ?

LNU2G183MTEJ is positioned as a high‑voltage, industrial‑grade aluminum electrolytic capacitor that balances compact packaging with high ripple‑current capability and verified endurance at 105°C. Its screw‑terminal, stud‑mount design makes it practical for retrofit or new designs in inverter, servo and industrial power supply applications where secure connections and predictable lifetime behavior are required.

Designers and procurement teams seeking robust bulk capacitance for high‑frequency regenerative circuits will find the LNU2G183MTEJ delivers verifiable performance data—capacitance, ripple handling, endurance and insulation/leakage metrics—from the manufacturer to support both design and qualification activities.

To request a quote or submit a product availability inquiry for LNU2G183MTEJ, please contact sales or request a formal quotation through your preferred procurement channel.