LNUN7681MSEFBB

The LNUN7681MSEFBB is a screw-terminal aluminum electrolytic capacitor designed for high-voltage industrial power applications. It delivers 680 µF at a rated DC voltage of 525 V in a compact φ51 × 85 mm can with robust screw-terminal connections.

Engineered for inverter and regenerative circuits, this polarized capacitor offers high ripple current capability, extended endurance at elevated temperature, and RoHS compliance—making it suitable for industrial power supplies, AC servomotor drives, and general inverter systems.

Key Features

• High Voltage & Capacitance — Rated capacitance of 680 µF at 525 V DC for high-voltage energy storage in power conversion circuits.
• Screw Terminal Mounting — Radial can with screw terminals (M5) for secure, low-inductance connections and easy field installation; brackets are supplied separately.
• Wide Operating Temperature — Specified for −40°C to +105°C operation with a load life of 5000 hours at 105°C under rated ripple conditions.
• High Ripple Current Capacity — 4.40 A at 120 Hz (low frequency) and 6.16 A at 100 kHz (high frequency) to support high-speed charge–discharge and regenerative loads.
• Leakage and Loss Characteristics — Leakage current specified at 1790 µA and tanδ of 0.2, supporting predictable performance under DC bias.
• Compact High-Voltage Form Factor — φ51 × 85 mm size provides a smaller high-voltage solution while maintaining performance for industrial applications.
• RoHS Compliant & Production Ready — Compliant with RoHS directives and available in mass production with cardboard packing for handling and storage.

Typical Applications

• Industrial Power Supplies — Energy storage and smoothing in inverter front-ends and high-voltage DC bus filtering for industrial converters.
• Motor Drive & Servo Systems — Support for high-frequency regenerative voltages and rapid charge–discharge cycles in AC servomotor and drive electronics.
• General Inverters — Bulk capacitance and ripple handling for general inverter modules where high DC voltage and compact size are required.

Unique Advantages

• High-Voltage Capability: Rated to 525 V DC, enabling use in elevated-voltage power conversion topologies without series stacking.
• Robust Ripple Handling: Specified ripple currents of 4.40 A (120 Hz) and 6.16 A (100 kHz) support both line-frequency filtering and high-frequency switching environments.
• Endurance at Elevated Temperature: 5000 hours life at 105°C under rated conditions provides reliable long-term operation in thermally demanding installations.
• Secure, Serviceable Termination: Screw-terminal design facilitates low-resistance connections and straightforward replacement or maintenance in the field.
• Predictable Electrical Behavior: Specified tanδ (0.2) and measured leakage current (1790 µA) allow accurate design margining for leakage and dissipation budgeting.
• Compact High-Voltage Packaging: φ51 × 85 mm can delivers high-voltage capacitance in a reduced footprint for space-constrained power assemblies.

Why Choose LNUN7681MSEFBB?

LNUN7681MSEFBB is positioned for engineers who need a compact, high-voltage capacitor with strong ripple-current capability and proven endurance at elevated temperatures. Its combination of 525 V rating, 680 µF capacitance, screw-terminal robustness, and 5000-hour life at 105°C makes it well suited to industrial inverter, servo, and power-supply applications that demand reliable energy storage and frequent charge–discharge cycling.

Supplied in cardboard packing and available in mass production, the LNUN7681MSEFBB balances performance and serviceability for system integrators and OEMs seeking a standardized, production-ready capacitor backed by clear electrical and thermal specifications.

Request a quote or submit an inquiry to receive pricing, availability, and technical support for the LNUN7681MSEFBB.