LNU2H681MSEFBB

The LNU2H681MSEFBB is a screw-terminal aluminum electrolytic capacitor rated 680 µF at 500 V. It is designed for power-electronic applications that require high-voltage capacitance in a radial can with robust screw terminals.

Built for industrial power supplies, inverter circuitry and regenerative power applications, this part delivers high ripple-handling capability, defined leakage performance, and a 5000-hour endurance at 105°C for sustained operation in demanding environments.

Key Features

• Electrolytic Core: 680 µF rated capacitance with ±20% tolerance (120 Hz, 20°C) for energy storage and smoothing in DC link and filtering applications.
• High Voltage Rating: 500 V DC rated voltage suited to high-voltage power supplies and inverter DC bus applications.
• Robust Mounting: Screw terminal radial can package designed for secure mechanical and electrical connections in power assemblies.
• Ripple Current Capability: Handles 4.0 A at 120 Hz (low frequency) and 5.6 A at 100 kHz (high frequency), enabling support for both mains- and switching-frequency ripple loads.
• Leakage and Loss Characteristics: Specified leakage current of 1740 µA and tangent of loss angle (tan δ) 0.2 to characterize dissipation and quiescent drain.
• High-Temperature Endurance: Rated for operation from –40°C to +105°C with a load life of 5000 hours at 105°C under applied ripple current.
• Physical Size & Packing: Cylinder size φ51 × 75 mm (L: 7.5 × D: 5.1 cm) and supplied in cardboard packing for production handling.
• Compliance: RoHS compliant.

Typical Applications

• Industrial Power Supplies: DC bus energy storage and smoothing for high-voltage power supplies used in factory automation and drive systems.
• Inverter and Motor Drive Systems: Bulk capacitance and ripple absorption on inverter DC links for AC motor control and drive electronics.
• Regenerative Power Circuits: Filtering and charge-discharge support for regenerative voltage in AC servomotor systems and related power-recovery circuits.
• High-Frequency Power Electronics: Support for rapid charge-discharge cycles and high-frequency switching where both low- and high-frequency ripple currents are present.

Unique Advantages

• High-voltage capability: 500 V rating enables use in high-voltage DC links without series stacking.
• Dual-frequency ripple handling: Specified ripple currents at 120 Hz and 100 kHz provide clear guidance for both line-frequency and switching-frequency designs.
• Long endurance at elevated temperature: 5000 hours rated life at 105°C under ripple load gives predictable lifetime performance in hot operating environments.
• Secure, serviceable connections: Screw terminal mounting simplifies integration and maintenance in power assemblies.
• Measured leakage and loss data: Defined leakage current (1740 µA) and tan δ (0.2) let designers quantify standby loss and dissipation for thermal planning.
• Production-ready packaging: Cardboard packing and mass-production availability support volume procurement and assembly workflows.

Why Choose LNU2H681MSEFBB?

LNU2H681MSEFBB combines high-voltage rating, substantial capacitance, and defined ripple endurance in a screw-terminal radial can tailored for industrial power electronics. Its specification set—500 V, 680 µF, dual-frequency ripple ratings, and 5000-hour life at 105°C—makes it suitable for DC bus filtering, inverter DC links, and regenerative power circuits where sustained performance and serviceable connections matter.

This capacitor is ideal for engineers specifying components for industrial drives, inverter supplies, and other high-voltage power systems who require verifiable electrical characteristics, elevated temperature endurance, and RoHS compliance for volume production and long-term maintenance.

Request a quote or submit an RFQ to evaluate LNU2H681MSEFBB for your next power-electronics design.