LAK2G121MELB25

The LAK2G121MELB25 is a snap-in terminal type aluminum electrolytic capacitor from Nichicon's LAK series, rated 400 V with 120 µF capacitance and ±20% tolerance. It is designed for general-purpose power applications where high-voltage handling, elevated operating temperature, and endurance are required.

Built for durability, this component supports continuous operation up to 105°C and includes safety features for abnormal voltage conditions, making it suitable for equipment exposed to fluctuating voltages and sustained ripple currents.

Key Features

• High Voltage Rating — Rated voltage of 400 V for use in higher-voltage power systems and applications.
• Capacitance & Tolerance — 120 µF nominal capacitance with ±20% tolerance (measured at 120 Hz, 20°C) for predictable filtering and energy storage.
• Elevated Temperature Endurance — Rated for operation up to 105°C with specified endurance of 2000 hours at 105°C under DC bias plus rated ripple current.
• Ripple Current Capability — 600 mA at 120 Hz and 690 mA at 10 kHz, supporting sustained ripple handling in power conversion and smoothing tasks.
• Safety & Abnormal Voltage Protection — Improved safety features and a pressure relief vent designed to operate without dangerous conditions under abnormal excessive voltage.
• Controlled Leakage & Loss — Leakage current specified as I ≤ 3√(C·V) μA after 5 minutes; tan δ up to 0.20 (120 Hz, 20°C) for controlled dissipation.
• Snap-In Radial Can Package — Robust snap-in terminal format (radial, can - snap-in) for secure PCB mounting; supplied in tray packing for production handling.
• RoHS Compliant — Meets RoHS requirements for restricted substances.

Typical Applications

• General Purpose Power Supplies — Filtering and smoothing in higher-voltage power supply rails where 400 V rating and ripple capability are required.
• Industrial Power Equipment — Energy storage and decoupling in industrial systems that operate at elevated temperatures and require long endurance.
• Equipment in Voltage-Fluctuating Environments — Suitable for applications exposed to varying line conditions thanks to enhanced safety features for abnormal voltage.

Unique Advantages

• 400 V capability: Enables use in higher-voltage designs without series stacking, simplifying board layout.
• 105°C, 2000-hour endurance: Provides predictable long-term performance under sustained thermal and ripple stress.
• Explicit safety design: Pressure relief and improved abnormal-voltage handling reduce the risk of hazardous failure modes.
• Quantified ripple performance: Specified ripple currents at both 120 Hz and 10 kHz let designers size components against measured operating conditions.
• Leakage and loss specifications: Clear leakage current formula and tan δ limit support reliable loss and standby current budgeting.
• Production-friendly packaging: Tray packing and snap-in terminals simplify assembly and mechanical retention for mass production.

Why Choose LAK2G121MELB25?

The LAK2G121MELB25 combines a 400 V rating with 120 µF capacitance and elevated-temperature endurance to deliver a reliable, robust solution for general-purpose power applications. Its snap-in radial can package and specified ripple/leakage characteristics make it a practical choice for designs that need predictable performance under thermal and electrical stress.

Designed as part of Nichicon's LAK series, this capacitor is suited to engineers and procurement teams seeking a high-voltage electrolytic with documented endurance, safety features for abnormal voltage, and RoHS compliance for long-term deployment.

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