LGU2W181MELZ

The LGU2W181MELZ is a Nichicon LGU series snap-in aluminum electrolytic capacitor designed for general-purpose high-voltage applications. It combines a 180 µF capacitance with a 450 V rated voltage in a radial snap-in can package, offering a compact solution for power filtering and energy storage where elevated voltage, ripple handling and long thermal endurance are required.

Specifically engineered for sustained operation at elevated temperatures, this part is rated for 3,000 hours at 105°C and is RoHS compliant, making it suitable for commercial and industrial equipment that requires reliable, long-life bulk capacitance in through-hole assemblies.

Key Features

• Capacitance and Tolerance — 180 µF nominal with ±20% (−20% to +20%) tolerance at 120 Hz, 20°C.
• High Voltage Rating — 450 V rated voltage for use in high-voltage circuits.
• Snap-In Radial Package — φ22 × 50 mm can with snap-in terminals for secure PCB mounting and simplified assembly.
• High Temperature Endurance — Qualified for 3,000 hours at 105°C under rated ripple current conditions.
• Ripple Current Capability — Low-frequency ripple current 1.00 A (120 Hz) and high-frequency ripple current 1.43 A (50 kHz) for effective smoothing under varied switching conditions.
• Low Loss Characteristics — tan δ (loss tangent) of 0.20 measured at 20°C, 120 Hz, supporting stable performance in AC ripple environments.
• Leakage Current — Specified leakage current of 850 µA after voltage application, supporting predictable standby and operating behavior.
• Environmental Compliance — RoHS compliant.

Typical Applications

• High-voltage power supplies — Bulk smoothing and energy storage for circuits requiring up to 450 V operation.
• Power conversion and DC link stages — Supports ripple handling at both low and high frequencies, useful in switching power supplies and converters.
• Industrial and commercial equipment — Long-life rating at 105°C makes it appropriate for systems operating under elevated ambient temperatures.

Unique Advantages

• High-voltage capability: 450 V rating enables design consolidation where higher DC voltages are present, reducing the need for multiple series capacitors.
• Robust thermal endurance: 3,000 hours at 105°C under rated ripple conditions supports longer maintenance intervals and predictable lifetime in hot environments.
• Dual-frequency ripple performance: Specified ripple current at 120 Hz and 50 kHz ensures reliable smoothing across both line-frequency and switching-frequency domains.
• Snap-in mounting: Radial snap-in can provides secure PCB retention and ease of assembly for through-hole manufacturing processes.
• Predictable electrical behavior: Defined tan δ and leakage current values enable accurate thermal and loss budgeting during design.
• RoHS compliant: Meets regulatory environmental requirements for lead-free assemblies.

Why Choose LGU2W181MELZ?

The LGU2W181MELZ delivers a balanced combination of high-voltage capability, substantial capacitance, and proven thermal endurance in a snap-in radial package. Its rated performance—180 µF at 450 V, specified ripple currents at both low and high frequencies, and 3,000-hour endurance at 105°C—makes it a practical choice for designers who need reliable bulk capacitance in demanding power circuits.

This part is well suited for engineers and procurement teams specifying components for commercial and industrial power systems that require predictable electrical characteristics, simplified PCB mounting, and long-term operational stability backed by Nichicon's LGU series design parameters.

To request a quote or submit a procurement inquiry for LGU2W181MELZ, please provide the part number and your quantity and delivery requirements so our sales team can assist you with pricing and availability.