LGU2Z681MELB

The LGU2Z681MELB is a Nichicon LGU series aluminum electrolytic capacitor in a snap-in terminal, radial can package. It provides 680 µF capacitance at a 180 V rating with a polarized design optimized for general-purpose power applications.

Designed for sustained operation up to 105°C, this part delivers specified ripple-current performance across low and high frequencies and is intended for applications that require long endurance and robust thermal performance.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance with a 180 V rated voltage and ±20% tolerance (measured at 120 Hz, 20°C).
• Snap-In Radial Package — Snap-in terminal type in a radial, can-style package (φ30 × 30L) for secure mounting in power assemblies; packaged in trays for handling.
• High Temperature Endurance — Rated for operation from −40°C to +105°C with endurance specified as 3000 hours at 105°C under rated ripple current conditions.
• Ripple Current Performance — Low-frequency ripple current of 1.78 A at 120 Hz and high-frequency ripple current of 2.67 A at 50 kHz, supporting smoothing and filtering tasks across a broad frequency range.
• Leakage & Loss — Leakage current specified at 1040 µA and tangent of loss angle measured at 120 Hz, 20°C, ensuring predictable dissipation characteristics for design calculations.
• Regulatory Compliance — RoHS compliant, supporting environmental and regulatory requirements for lead-free assemblies.

Typical Applications

• Power supply filtering — Bulk smoothing and decoupling in power supplies where 680 µF at 180 V is required and sustained ripple handling matters.
• Switch-mode power supplies — Energy storage and ripple damping in SMPS designs that operate across low and high ripple frequencies, leveraging the specified ripple-current ratings.
• Industrial power equipment — General-purpose filtering and energy buffering in industrial systems that require operation up to 105°C and long lifetime performance.
• General-purpose power conversion — Applications requiring polarized, high-voltage aluminum electrolytic support with tray-packed components for assembly efficiency.

Unique Advantages

• Proven thermal endurance — 3000 hours rated endurance at 105°C provides predictable long-term performance in elevated-temperature environments.
• Dual-frequency ripple capability — Specified ripple current at both 120 Hz (1.78 A) and 50 kHz (2.67 A) enables designers to size the part for a wide range of switching frequencies.
• Compact, secure mounting — Snap-in terminals in a φ30 × 30L can minimize board area while providing robust mechanical retention for power assemblies.
• Design-predictable losses and leakage — Tangent of loss angle and a defined leakage current (1040 µA) help with thermal and standby current budgeting.
• RoHS compliance and tray packing — Lead-free compliance and tray packaging support modern manufacturing and environmental requirements.

Why Choose LGU2Z681MELB?

The LGU2Z681MELB from Nichicon’s LGU series combines a high-voltage 180 V rating with substantial capacitance (680 µF) and robust ripple-current capability, all in a snap-in radial can package. Its 3000-hour endurance at 105°C and defined electrical characteristics make it well suited for designers targeting reliable power-handling and long-term stability in general-purpose and industrial power systems.

This part is appropriate for engineers who need a polarized aluminum electrolytic with predictable leakage, loss characteristics, and mounting security, delivered in tray packing and compliant with RoHS requirements.

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