LNU2H182MSEG

The LNU2H182MSEG is a screw-terminal aluminum electrolytic capacitor designed for high-voltage industrial power applications. It delivers 1800 µF capacitance at a 500 V rated voltage with polarization and a wide operating temperature range from −40 °C to 105 °C.

Engineered for inverter circuitry, high-frequency regenerative voltages and high-speed charge–discharge loading, this part provides long life under ripple-loading conditions and is RoHS compliant.

Key Features

• Capacitance & Voltage — 1.8 mF (1800 µF) nominal capacitance with a 500 V rated voltage; series rated voltage range up to DC 525 V.
• High-temperature Endurance — Load life of 5000 hours at 105 °C with rated ripple current applied; endurance and shelf-life characteristics meet the LNU series specifications.
• Ripple Current Capability — 7.4 A at 120 Hz and 10.36 A at 10 kHz, enabling use with both low- and high-frequency ripple conditions.
• Charge–Discharge Robustness — Specified to cope with high-speed charge–discharge loading and endurance to 50 million charge–discharge cycles (rated ΔV, 3 Hz cycle) per series specifications.
• Wide Operating Temperature — Rated for −40 °C to +105 °C operation for demanding industrial environments.
• Form Factor & Mounting — Radial can with screw terminals for secure, low-resistance connections; size approximately L: 10 cm × D: 6.35 cm and a seated height max of 3.937 inch.
• Electrical Reliability — Leakage current limited to not more than 3√(C·V) µA or 5 mA (whichever is smaller) after 5 minutes at 20 °C; insulation resistance >100 MΩ at DC 500 V between terminal and bracket; AC 2500 V proof between terminal and bracket for 1 minute.
• Tolerance & Polarization — Capacitance tolerance ±20%; polarized device suitable for DC applications.
• RoHS Compliance — Meets RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Inverters — Energy storage and smoothing in inverter power supplies where high voltage and long life at 105 °C are required.
• AC Servo Motor Systems — Handling high-frequency regenerative voltage and rapid charge–discharge cycles in servo drive regenerating stages.
• Power Conversion Equipment — DC bus filtering and transient buffering in industrial power supplies and general inverter designs.

Unique Advantages

• High-voltage capability: 500 V rated nominal voltage with series rated up to DC 525 V supports higher-voltage DC bus designs.
• Designed for high ripple and high-frequency use: Specified ripple current at both 120 Hz and 10 kHz makes it suitable for a range of switching frequencies.
• Long thermal life: 5000 hours at 105 °C under rated ripple current reduces maintenance frequency in demanding environments.
• Robust electrical safety margins: High insulation resistance and AC voltage proof between terminal and bracket support reliable field operation.
• Screw-terminal mounting: Provides secure electrical connections and ease of installation for industrial assemblies.
• RoHS compliance: Fits regulatory requirements for lead-restricted designs.

Why Choose LNU2H182MSEG?

LNU2H182MSEG combines high nominal capacitance with a 500 V rating and proven endurance at elevated temperature, positioning it for industrial inverter, servo, and power-conversion designs that require reliable DC energy buffering and high-frequency ripple handling. Its screw-terminal form factor and robust electrical specifications make it suitable for assemblies where secure connections and long-term performance are priorities.

Backed by the Nichicon LNU series specifications, this capacitor offers verifiable endurance, leakage, and insulation characteristics that support system reliability and long-term operation in challenging industrial environments.

Request a quote or contact sales to discuss pricing, lead time and availability for LNU2H182MSEG.