LNU2W682MTEJ

The LNU2W682MTEJ is a screw-terminal aluminum electrolytic capacitor designed for high-voltage industrial power applications. It provides 6.8 mF (6800 µF) capacitance at a rated voltage of 450 V and is built for stud-bolt mounting in radial can format with screw terminals.

Engineered for inverter and regenerative circuits, this capacitor supports high-frequency charge–discharge loads and regenerative voltages for AC servomotors and general inverters. Key value propositions include high-voltage capability (rated range up to DC 525 V), high ripple handling, and extended high-temperature life at 105 °C.

Key Features

• Capacitance & Voltage: 6.8 mF (6800 µF) nominal capacitance with a rated voltage of 450 V and rated-voltage range up to DC 525 V.
• High-temperature operation: Rated for continuous operation from –40 °C to +105 °C with a load-life specification of 5000 hours at 105 °C under rated ripple current.
• High ripple and high-frequency performance: Ripple current capability of 22.5 A at 120 Hz and 31.5 A at 10 kHz supports demanding inverter/regenerative duties and high-speed charge–discharge cycles.
• Robust mounting & package: Stud bolt mount (screw terminals) in a radial can package for secure mechanical and electrical connections; nominal bolt sizes and terminal dimensions are provided in the LNU series drawing.
• Endurance & reliability: Designed to meet endurance and charge–discharge specifications (including 50 million cycle charge–discharge endurance), with post-test limits for capacitance, tan δ and leakage current defined in the datasheet.
• Electrical safety characteristics: Insulation resistance greater than 100 MΩ at DC 500 V between terminal and bracket and voltage proof of AC 2500 V for 1 minute between terminal and bracket.
• Leakage current specification: After 5 minutes at rated voltage, leakage current is limited to not more than 3√(C·V) µA or 5 mA, whichever is smaller (C: µF, V: V).
• Tolerance & low-temperature stability: Capacitance tolerance ±20% (120 Hz, 20 °C) and an impedance ratio Z(–40 °C)/Z(+20 °C) of up to 8 for rated voltage (400–525 V).
• Regulatory compliance: Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial inverters and drives: Energy storage and smoothing for inverter circuitry in industrial power supplies and motor drive systems.
• Regenerative motor circuits: Handling high-frequency regenerative voltages in AC servomotor applications where rapid charge–discharge performance is required.
• High-voltage power electronics: Bulk filtering and ripple handling in high-voltage DC bus and power-conversion stages up to the rated-voltage range.

Unique Advantages

• High-voltage capability: Rated up to 450 V (series rated up to DC 525 V), enabling use in higher-voltage power designs without series-paralleling for increased voltage.
• Compact high-voltage design: Part of the LNU series designed for high-voltage performance in a smaller footprint compared with previous LNT-series dimensions.
• High ripple handling: Specified ripple currents at both low and high frequencies (22.5 A at 120 Hz, 31.5 A at 10 kHz) to support demanding inverter and regenerative loads.
• Long high-temperature life: 5000-hour load life at 105 °C under rated ripple stress for stability in elevated-temperature environments.
• Robust electrical isolation: Insulation resistance and voltage-proof ratings between terminal and bracket reduce risk of breakdown in high-voltage assemblies.
• Proven endurance for charge–discharge: Engineered to meet 50 million charge–discharge cycles, supporting designs with frequent switching or regenerative events.

Why Choose LNU2W682MTEJ?

LNU2W682MTEJ positions itself as a reliable, high-voltage energy-storage component for industrial power electronics where high ripple currents, frequent charge–discharge cycling, and elevated operating temperatures are common. Its screw-terminal stud mounting and radial can package simplify integration into inverter and regenerative circuits.

This capacitor is suited for engineers and procurement teams designing inverter drives, regenerative motor controllers, and high-voltage DC bus systems who need measurable specifications for ripple, endurance, insulation and thermal life, along with RoHS compliance for regulated markets.

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