LAKW6121MELC25ZB

The LAKW6121MELC25ZB is an aluminum electrolytic capacitor in a snap-in terminal radial can designed for general-purpose, high-voltage applications. It delivers 120 µF capacitance at a 420 V rating with a compact φ35 × 25 mm can and tray packing for production use.

Engineered for elevated temperature operation and voltage fluctuation environments, the LAKW6121MELC25ZB combines high-voltage capability, defined ripple handling, and extended endurance to support demanding power-conditioning roles.

Key Features

• Electrical Performance — 120 µF capacitance with ±20% tolerance and a rated voltage of 420 V, suitable where high DC voltage handling is required.
• Loss and Leakage — Tangent of loss angle (tanδ) 0.20 max (measured at 20°C, 120 Hz) and specified leakage current of 670 µA.
• Ripple Current Capability — Low-frequency ripple current 750 mA at 120 Hz and high-frequency ripple current 862.5 mA at 10 kHz, enabling effective smoothing under AC ripple loads.
• Temperature and Endurance — Rated for -25°C to 105°C operation with a guaranteed life of 2000 hours at 105°C when subjected to D.C. bias plus rated ripple current.
• Safety and Robustness — Designed with improved safety features for abnormally excessive voltage and a pressure relief vent that operates without dangerous conditions such as flames or dispersion of case pieces.
• Package and Mounting — Radial, snap-in can (φ35 × 25 mm) for secure PCB mounting; supplied in tray packing for production handling.
• Environmental Compliance — RoHS compliant.
• Polarized — Polarized aluminum electrolytic capacitor for standard DC applications.

Typical Applications

• Voltage-fluctuating equipment — Suited for equipment operating in environments with fluctuating voltages, leveraging series design features for abnormal voltage conditions.
• High-voltage DC filtering — 420 V rating and defined ripple current performance make it appropriate for DC bus filtering and high-voltage smoothing tasks.
• Industrial power supplies — Long endurance at 105°C and wide operating temperature range support continuous operation in industrial power systems.
• General-purpose power smoothing — General-purpose applications requiring polarized high-voltage capacitance with reliable leakage and loss characteristics.

Unique Advantages

• High-voltage capability: 420 V rating enables use in higher-voltage DC circuits without derating.
• Defined ripple handling: Specified ripple currents at 120 Hz and 10 kHz (750 mA / 862.5 mA) provide clear guidance for thermal and ripple budgeting in designs.
• Extended elevated-temperature life: 2000 hours at 105°C under rated ripple and DC bias supports durability in thermally demanding installations.
• Safety-focused construction: Improved safety features and a pressure relief vent reduce the risk of hazardous failure modes under abnormal voltage stress.
• Production-ready packaging: Tray packing facilitates automated assembly and handling in manufacturing environments.
• Regulatory compliance: RoHS compliance supports restricted-substance requirements for commercial and industrial products.

Why Choose LAKW6121MELC25ZB?

The LAKW6121MELC25ZB positions itself as a reliable, high-voltage aluminum electrolytic solution for engineers who need defined ripple performance, long elevated-temperature endurance, and built-in safety behavior under abnormal voltage conditions. Its snap-in radial can form factor and tray packing make it practical for production assembly in industrial and general-purpose power designs.

Choose this part when your design demands a 120 µF, 420 V polarized capacitor with clear electrical limits (tanδ, leakage current, ripple current) and documented endurance at 105°C to simplify validation and thermal planning.

Request a quote or submit an inquiry to receive pricing and availability for LAKW6121MELC25ZB, or for assistance matching this capacitor to your design requirements.