LNU2H681MSEFBN

The LNU2H681MSEFBN is a screw-terminal aluminum electrolytic capacitor designed for high-voltage power applications. It delivers 680 μF capacitance at a 500 V DC rating in a compact screw-terminal can (φ51 × 75L), offering robust performance for industrial power and inverter circuitry.

Built for reliability in demanding environments, this capacitor supports high ripple currents, a wide operating temperature range of −40 °C to 105 °C, and a rated endurance of 5000 hours at 105 °C, making it suitable for regenerative and high-frequency power systems.

Key Features

• Electrical Performance 680 μF nominal capacitance with ±20% tolerance and a rated voltage of 500 V DC for high-voltage energy storage and smoothing.
• High Ripple Current Handling Designed for heavy-duty ripple: 4.0 A at 120 Hz (low frequency) and 5.6 A at 10 kHz (high frequency), supporting high‑speed charge/discharge and switching applications.
• Endurance & Reliability Rated for 5000 hours at 105 °C under rated ripple conditions; meets endurance and shelf-life characteristics outlined for the LNU series.
• Leakage and Dissipation Specified leakage current of 1740 μA and tangent of loss angle (tan δ) of 0.2 for predictable leakage and dissipation behavior.
• Package & Mounting Screw terminal (radial can with screw terminals) with M5 nominal bolt size and dimensions φ51 × 75L (L: 7.5 × D: 5.1 cm), enabling secure mechanical and electrical connections.
• Temperature Range & Durability Operating temperature from −40 °C to 105 °C, with voltage-proof and insulation resistance characteristics consistent with industrial power use.
• RoHS Compliant Conforms to RoHS requirements for environmental and regulatory compliance.

Typical Applications

• Industrial Power Supplies / Inverters Suited for DC bus smoothing and energy storage in inverter circuitry and industrial power-supply designs that require high-voltage capacitors.
• AC Servomotor Regenerative Circuits Supports high-frequency regenerative voltages encountered in servomotor drives and other regenerative power systems.
• General Power Conversion Used in power conversion and high-speed charge/discharge circuits where sustained ripple handling and thermal endurance are required.

Unique Advantages

• High-Voltage Capability: 500 V rating provides headroom for demanding DC-link and high-voltage applications.
• Robust Ripple Performance: Rated ripple currents of 4.0 A (120 Hz) and 5.6 A (10 kHz) enable reliable operation in both low- and high-frequency environments.
• Long Endurance at Elevated Temperature: 5000 hours life at 105 °C supports long-term stability in hot operating conditions.
• Compact Screw-Terminal Package: φ51 × 75L can with screw terminals and M5 bolt interface simplifies mounting and mechanical retention in power assemblies.
• Predictable Leakage & Loss: Specified leakage current (1740 μA) and tan δ (0.2) allow designers to model standby losses and thermal performance accurately.
• Regulatory Compliance: RoHS compliance supports use in regulated manufacturing environments.

Why Choose LNU2H681MSEFBN?

LNU2H681MSEFBN is positioned for engineers and procurement teams building high-voltage power systems that demand reliable energy storage, strong ripple tolerance, and sustained performance at elevated temperatures. Its screw-terminal can and durable specifications make it a practical choice for industrial inverter circuits, regenerative drives, and other power-conversion applications.

Backed by Nichicon’s LNU series specifications and a focused set of measurable electrical and mechanical characteristics, this part delivers design predictability and long-term value for systems requiring robust high-voltage electrolytic capacitors.

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