LAK2G181MELB30

The LAK2G181MELB30 is a 180 µF aluminum electrolytic capacitor in a snap-in radial can package, rated for 400 VDC. Engineered for high-voltage, general-purpose applications, it combines a compact φ30 × 30 mm footprint with snap-in terminals for secure PCB mounting.

Designed to withstand elevated thermal and electrical stress, this part is specified for operation from -25°C to +105°C, with endurance supporting 2000 hours of rated ripple current at 105°C. The product includes improved safety features for abnormally excessive voltage and is RoHS compliant.

Key Features

• Capacitance & Voltage — 180 µF nominal capacitance at a rated voltage of 400 VDC, suitable for high-voltage filtering and energy storage roles.
• Snap-in Radial Can Package — φ30 × 30 mm can with snap-in terminals for robust mechanical retention in through-hole assemblies.
• High-Temperature Endurance — Endurance rating of 2000 hours when subjected to rated ripple current at 105°C, then measured at 20°C.
• Operating Temperature Range — Specified for use from -25°C to +105°C for a wide range of thermal environments.
• Ripple Current Capability — 800 mA at 120 Hz and 920 mA at 10 kHz, supporting both low- and high-frequency ripple conditions.
• Leakage and Loss Characteristics — Leakage current defined by I ≤ 3√CV (μA) after 5 minutes at 20°C; tan δ max 0.20 at 120 Hz, 20°C.
• Safety Performance — Pressure-relief vent designed to operate under abnormal voltage conditions; for 400 V rated parts with 100 ≤ C < 220 µF (this part is 180 µF) the limited DC current test level is 4 A at test voltages of 500 VDC and 600 VDC.
• Regulatory Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies — Bulk smoothing and filtering in high-voltage power supplies where durable thermal and ripple performance is required.
• Inverter and Motor Drive DC Links — Energy storage and ripple handling in DC-link stages for drives and power conversion equipment operating at elevated voltages.
• UPS and Power Conditioning Equipment — High-voltage capacitance for backup and conditioning systems that experience fluctuating input voltages.
• General-Purpose High-Voltage Circuits — Use in a variety of high-voltage electronic equipment requiring reliable electrolytic capacitance and safety features.

Unique Advantages

• Proven High-Temperature Endurance — 2000 hours at 105°C under rated ripple current provides predictable aging characteristics for long-term designs.
• Extended Voltage Range Options — Part of a series offering 200 V, 400 V and 420 V ratings, enabling consistent design choices across different voltage domains.
• Robust Ripple Handling — Specified ripple current at both 120 Hz and 10 kHz supports designs encountering a range of ripple frequencies.
• Built-in Safety Features — Pressure-relief vent and defined limited DC current test levels for abnormal voltage conditions improve system-level safety and fault behavior.
• Easy PCB Integration — Snap-in radial can package simplifies mechanical retention and assembly for through-hole boards.
• RoHS Compliance — Meets RoHS directive requirements for lead-free content and restricted substances.

Why Choose LAK2G181MELB30?

The LAK2G181MELB30 delivers a balanced combination of high-voltage capability, thermal endurance and safety-focused design for engineers specifying 400 V, 180 µF electrolytic capacitance. Its snap-in radial can and tested ripple ratings make it well suited for industrial power systems, inverter DC links and other equipment exposed to fluctuating voltages.

Backed by Nichicon’s LAK series specifications, this capacitor is intended for designers who require verified performance at elevated temperatures and clear safety test conditions, providing predictable behavior and ease of integration into through-hole power designs.

For pricing, lead-time and to request a formal quotation, please contact our sales team with your part number and application requirements.