LAKW6121MELA35ZB

The LAKW6121MELA35ZB from Nichicon’s LAK series is a snap‑in terminal aluminum electrolytic capacitor rated 120 µF at 420 V with a φ25 × 35 mm can. It is designed for general‑purpose applications and for equipment operating in areas with fluctuating voltage, offering a 105°C permissible abnormal voltage capability.

Engineered for production use (tray packing, mass production), this part combines high voltage rating, snap‑in mounting, and endurance characteristics suitable for demanding thermal and electrical environments.

Key Features

• Capacitance & Voltage — 120 µF rated capacitance at a 420 V working voltage, tolerance ±20% (120Hz, 20°C).
• High‑Temperature Endurance — Rated for operation from −25°C to +105°C with endurance of 2000 hours at 105°C under specified conditions.
• Permissible Abnormal Voltage / Safety — Designed with improved safety features and a pressure relief vent to operate without dangerous conditions under abnormal excessive voltage.
• Snap‑in Radial Can Package — Snap‑in terminal type (radial, can – snap‑in) for robust PCB mounting and mechanical stability in assembly.
• Ripple Current Capability — Specified ripple current: 750 mA at 120 Hz and 862.5 mA at 10 kHz, supporting AC ripple stress at both low and high frequencies.
• Leakage Current Specified — Leakage current limit defined by I ≤ 3√(C·V) µA after 5 minutes at 20°C, enabling predictable leakage behavior for design verification.
• Regulatory Compliance — RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• General‑purpose equipment — Suitable for a broad range of general‑purpose electronic systems where a high‑voltage electrolytic capacitor is required.
• Equipment in voltage‑fluctuating areas — Specifically indicated as ideally suited for equipment exposed to fluctuating voltages due to its extended voltage range and safety measures.
• Production assembly — Tray packing and snap‑in terminals streamline OEM volume assembly and PCB installation.

Unique Advantages

• Long endurance at elevated temperature — 2000 hours at 105°C under rated conditions provides designers with a measurable reliability baseline for high‑temperature applications.
• High working voltage with extended range — 420 V rating supports designs requiring higher DC bus voltages within the LAK series’ extended voltage family.
• Defined ripple handling — Published ripple current values at 120 Hz and 10 kHz allow confident thermal and ripple budgeting in power designs.
• Predictable leakage behavior — Leakage current defined by a formula (I ≤ 3√CV) after voltage application provides a verifiable parameter for system leakage budgets.
• Enhanced safety features — Pressure relief vent and design measures for permissible abnormal voltage reduce risk of hazardous failure modes under abnormal conditions.
• RoHS compliance — Conforms to current RoHS directives for environmental and regulatory alignment in production products.

Why Choose LAKW6121MELA35ZB?

LAKW6121MELA35ZB positions itself as a robust, production‑ready solution for designers who need a high‑voltage aluminum electrolytic capacitor with documented endurance and safety characteristics. Its combination of a 420 V rating, 105°C permissible abnormal voltage design, and snap‑in package simplifies mechanical integration while providing measurable electrical performance.

This part is suited to OEMs and engineers designing systems that must tolerate voltage fluctuations and elevated operating temperatures, offering clear specification points for lifetime, ripple capability, leakage current, and safety performance backed by the LAK series datasheet.

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