LGUW6181MELB

The LGUW6181MELB is a snap-in terminal aluminum electrolytic capacitor from Nichicon's LGU series. It provides 180 µF capacitance at a 420 V rating in a radial, can-type snap-in package designed for general-purpose power applications.

Engineered for elevated-temperature operation, this part supports an operating range of −25°C to 105°C and a guaranteed endurance of 3000 hours at 105°C under rated ripple current. RoHS-compliant construction addresses regulatory requirements for lead-free systems.

Key Features

• Capacitance & Tolerance — 180 µF rated capacitance with ±20% tolerance (measured at 120 Hz, 20°C).
• High DC Voltage — Rated for 420 V operation, suitable where higher voltage DC link or filtering is required.
• Ripple Current Handling — Specified low-frequency ripple current of 950 mA at 120 Hz and high-frequency ripple current of 1.359 A at 50 kHz, enabling robust ripple dissipation across frequencies.
• Thermal Endurance — Life specification of 3000 hours at 105°C when D.C. bias plus rated ripple current is applied, per the LGU series endurance criteria.
• Leakage & Loss Characteristics — Leakage current specified at 820 µA; tangent of loss angle (tan δ) maximum 0.15 for 160–420 V range (measured at 120 Hz, 20°C).
• Package & Mounting — Radial, can-style snap-in package (φ30 × 30 mm), designed for secure snap-in board or chassis mounting.
• Temperature Range — Rated operating range −25°C to 105°C for 315–450 V parts in the LGU series.
• Regulatory Compliance — RoHS compliant per the LGU series declaration.

Typical Applications

• General-purpose power filtering — Bulk smoothing and DC link filtering where a 420 V rating and 180 µF capacitance are required.
• High-temperature power assemblies — Designs that require operation up to 105°C with a 3000-hour endurance under rated ripple conditions.
• Chassis or board-mounted power modules — Snap-in radial can package provides stable mechanical retention for assemblies requiring robust mounting.

Unique Advantages

• High-voltage capability: 420 V rating supports higher-voltage DC link and filtering applications without the need to parallel lower-voltage parts.
• Defined ripple performance: Specified ripple current at both low and high frequencies (950 mA at 120 Hz; 1.359 A at 50 kHz) simplifies thermal and lifetime planning.
• Proven thermal endurance: 3000 hours at 105°C under rated ripple current provides a clear lifetime specification for reliability planning.
• Low loss at operating frequency: tan δ ≤ 0.15 at 120 Hz (for 160–420 V range) aids in minimizing heat generation under AC conditions.
• Compact snap-in form factor: φ30 × 30 mm can with snap-in terminals enables secure mounting while conserving board footprint.
• Regulatory assurance: RoHS compliance supports integration into lead-free product lines.

Why Choose LGUW6181MELB?

LGUW6181MELB combines a high 420 V rating, substantial 180 µF capacitance, and defined ripple-current and thermal endurance characteristics to support demanding general-purpose power applications. Its snap-in radial can package and RoHS-compliant construction make it straightforward to integrate into higher-voltage assemblies that require durable, long-life electrolytic capacitance.

This part is well suited for engineers and procurement teams specifying components for power filtering, DC link smoothing, and assemblies operating at elevated temperatures where a clear 3000-hour endurance specification and measurable ripple-handling capability are required.

Request a quote or submit a procurement inquiry to receive pricing, lead-time, and availability information for LGUW6181MELB.