LAKW6820MELZ35ZB

The LAKW6820MELZ35ZB from Nichicon’s LAK series is a snap-in terminal aluminum electrolytic capacitor rated for 420 V with 82 µF capacitance. Engineered as a large-can, radial snap-in device, it targets general-purpose power applications that require high-voltage filtering and robust thermal endurance.

Key value propositions include 105°C continuous operation, certified endurance under rated ripple current for 2000 hours, and enhanced safety features for operation in environments with fluctuating or abnormally excessive voltages.

Key Features

• Capacitance & Tolerance — 82 µF nominal capacitance with capacitance tolerance of -20% to +20% (±20%).
• High DC Voltage — Rated voltage: 420 V, supporting high-voltage power-filtering applications.
• High-Temperature Endurance — Designed for operation from -25°C to +105°C with an endurance rating of 2000 hours at 105°C under D.C. bias plus rated ripple current.
• Ripple Current Capability — Low-frequency ripple: 640 mA at 120 Hz; high-frequency ripple: 736 mA at 10 kHz, enabling effective smoothing under varying ripple conditions.
• Low Loss — Tangent of loss angle (tan δ) specified at 0.20 max (measured at 20°C, 120 Hz), supporting stable AC behaviour.
• Leakage Current — Specified leakage current: 550 µA, measured after standard voltage application.
• Snap‑in Radial Can Package — φ22 × 35 mm large-can, snap-in terminals for secure PCB mounting and mechanical stability; supplied in tray packing for production use.
• Safety Features — Pressure relief vent designed to operate without dangerous conditions such as flames or dispersion of case pieces under abnormal voltage events.
• Environmental Compliance — RoHS compliant.

Typical Applications

• General-purpose power filtering — Bulk smoothing and energy storage in high-voltage power supply rails where a 420 V rating and 82 µF capacitance are required.
• Equipment exposed to fluctuating voltages — Suitable for designs that must tolerate voltage fluctuation or occasional abnormal voltage conditions due to the LAK series’ enhanced safety features.
• High-temperature installations — Systems that must operate reliably up to 105°C for extended periods benefit from the capacitor’s 2000-hour endurance rating at that temperature.

Unique Advantages

• Long life at elevated temperature: Rated for 2000 hours at 105°C with specified limits for capacitance, tan δ, and leakage current after endurance testing, providing predictable aging behavior.
• High-voltage capability: 420 V rating lets designers use a single capacitor solution for high-voltage rails without series stacking.
• Robust ripple performance: Specified ripple currents at both 120 Hz and 10 kHz accommodate a range of power-conversion topologies and switching frequencies.
• Built-in safety venting: Pressure relief vent operation minimizes the risk of hazardous failures under abnormal voltage stress.
• Production-ready packaging: Tray packing and mass production status simplify procurement and assembly for volume builds.
• Regulatory compliance: RoHS compliance supports use in regions requiring restricted substance conformity.

Why Choose LAKW6820MELZ35ZB?

The LAKW6820MELZ35ZB combines high DC voltage rating, sizeable capacitance, and long-term high-temperature endurance in a snap-in radial can package, making it well-suited for engineers designing robust power systems that face fluctuating voltages and elevated thermal conditions. Its specified ripple current ratings at both low and high frequencies and controlled leakage and loss characteristics provide predictable performance in filtering and energy-storage roles.

This Nichicon LAK series part is appropriate for projects that prioritize thermal endurance, safety under abnormal voltage events, and straightforward mechanical mounting in production assemblies.

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