LNU2W103MSEJBN

The LNU2W103MSEJBN is a screw-terminal aluminum electrolytic capacitor from Nichicon's LNU series. It delivers 10000 µF capacitance at a 450 V rating in a radial can with screw terminals, engineered for industrial power electronics.

Designed for inverter circuitry and high-frequency regenerative environments, this part combines high-voltage capability, high ripple handling and long-term endurance for demanding industrial applications such as AC servomotor drives and general inverters.

Key Features

• Capacitance & Rated Voltage — 10000 µF nominal capacitance with a rated voltage of 450 V and ±20% tolerance (120 Hz, 20°C).
• High-Temperature Endurance — Load life of 5000 hours at 105°C with D.C. bias plus rated ripple current; specifications restored after recovery to 20°C.
• Screw-Terminal Radial Can — Robust screw-terminal mounting for high-current connections in industrial power assemblies.
• High Ripple Current Capability — Rated ripple current of 27.3 A at 120 Hz and 38.22 A at 10 kHz to support heavy AC ripple and switching waveforms.
• Charge–Discharge Endurance — Specified to withstand 50 million charge–discharge cycles (ΔV = rated voltage ±0.3, 3 Hz) while meeting post-test electrical characteristics.
• Wide Operating Range — Operational from −40°C to +105°C for use across industrial temperature environments.
• Insulation & Voltage Proof — Insulation resistance >100 MΩ at DC 500 V (between terminal and bracket) and withstands AC 2500 V for 1 minute without abnormality.
• RoHS Compliance — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies — Energy smoothing and DC bus support in inverter power supplies where high-voltage bulk capacitance is required.
• Inverter & Regenerative Circuits — Handles high-frequency regenerative voltage and energy return for AC servomotor drives and general inverter systems.
• High-Speed Charge/Discharge Systems — Suitable for applications that require repeated fast charge–discharge cycles, backed by the series’ 50 million cycle endurance specification.
• Motor Drives — Bulk DC-link and ripple filtering in motor-control and drive assemblies operating at elevated temperatures.

Unique Advantages

• High-voltage capability in a compact LNU series package — Offers 450 V rating with a smaller footprint compared to previous LNT designs, enabling denser power assemblies.
• Designed for extended high-temperature operation — 5000-hour load life at 105°C provides predictable performance in demanding industrial environments.
• Robust ripple-handling performance — High ripple current ratings at both 120 Hz and 10 kHz reduce heating and support switching-frequency loads.
• Proven charge–discharge endurance — Validated to meet electrical specifications after 50 million charge–discharge cycles, supporting regenerative and repeated-energy applications.
• Solid insulation and voltage-proof characteristics — High insulation resistance and AC voltage proof between terminal and bracket improve system-level reliability.
• Regulatory compliance — RoHS conformity for use in markets requiring restricted-substance compliance.

Why Choose LNU2W103MSEJBN?

The LNU2W103MSEJBN positions itself as a reliable high-voltage bulk capacitor for industrial power electronics, delivering 10000 µF at 450 V with design attributes tailored to inverter and regenerative systems. Its combination of high ripple capacity, charge–discharge endurance and 105°C load-life rating make it suitable for engineers specifying durable DC-link and energy-storage solutions.

Engineers and procurement teams designing motor drives, inverter power supplies and regenerative converters will find this part useful where long-term thermal endurance, high-voltage operation and robust ripple performance are priorities. The LNU series’ documented electrical and mechanical characteristics support predictable integration into industrial power assemblies.

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