LAKW6121MELA35

The LAKW6121MELA35 from Nichicon is a snap‑in terminal aluminum electrolytic capacitor in the LAK series, rated 120 µF at 420 V. It is designed for general‑purpose use and for equipment subject to fluctuating supply voltages, offering a combination of high voltage capability and long high‑temperature endurance.

Packaged in a radial can with snap‑in terminals (φ25 × 35L / L: 3.5 × D: 2.5 cm) and supplied in tray packing for mass production, this part supports designs requiring polarized high‑voltage bulk capacitance with reliable ripple handling and built‑in safety measures.

Key Features

• Rated Capacitance and Voltage: 120 µF nominal capacitance with a 420 V rated voltage suited for high‑voltage applications within the LAK series.
• Snap‑in Terminal Package: Radial, can‑type snap‑in mounting for secure mechanical and electrical installation in assemblies; supplied in tray packing for volume production.
• Operating Temperature Range: Specified from −25 °C to +105 °C to support higher temperature operating environments.
• High‑Temperature Endurance: Designed to withstand 2000 hours at 105 °C with rated ripple current applied; capacitance change remains within ±20% after the endurance test as specified in the series datasheet.
• Ripple Current Capability: Rated ripple current of 750 mA at 120 Hz and 862.5 mA at 10 kHz, enabling effective AC ripple handling at common frequencies.
• Safety and Over‑voltage Measures: LAK series improvements for abnormal excessive voltage and a pressure relief vent designed to operate without creating dangerous conditions.
• Electrical Characteristics: Polarized device with capacitance tolerance ±20% (at 120 Hz, 20 °C) and leakage current defined per datasheet (I ≤ 3√CV μA after 5 minutes at 20 °C).

Typical Applications

• General Purpose Equipment: Bulk energy storage and filtering where a polarized, high‑voltage electrolytic capacitor is required.
• Voltage‑Fluctuating Environments: Designed for equipment subject to supply variation—series notes LAK capacitors are ideally suited to these conditions.
• High‑Temperature Systems: Use in assemblies operating up to 105 °C with long endurance requirements (2000 hours at 105 °C).
• Volume Production Assemblies: Tray packing and snap‑in mounting make the part suitable for high‑volume manufacturing processes.

Unique Advantages

• High Voltage Handling: 420 V rating provides headroom for high‑voltage circuits without stepping up component count.
• Proven High‑Temperature Endurance: 2000‑hour endurance at 105 °C helps preserve capacitance and reliability in hot operating environments.
• Measured Ripple Performance: Specified ripple currents at 120 Hz and 10 kHz give clear expectations for AC stress handling in filter and smoothing roles.
• Series Safety Design: Improved safety features for abnormal voltage events and a pressure relief vent reduce risk of hazardous failures under stress.
• Production‑Friendly Packaging: Tray packing and snap‑in terminals simplify automated handling and assembly for mass production builds.
• Standards‑oriented Electrical Specs: Clear leakage current and tan δ limits (tan δ ≤ 0.20 at 120 Hz, 20 °C) enable predictable performance verification during design and incoming inspection.

Why Choose LAKW6121MELA35?

LAKW6121MELA35 positions itself as a reliable high‑voltage electrolytic solution for designs that need 120 µF at 420 V with durable operation up to 105 °C. Its snap‑in package and tray packing support efficient assembly workflows, while series‑level safety and endurance specifications provide predictable long‑term behavior under rated ripple and temperature stress.

This part is appropriate for designers and procurement teams specifying general‑purpose high‑voltage bulk capacitance in equipment that experiences voltage fluctuation or elevated ambient temperatures, and for production environments that require consistent, manufacturable components backed by Nichicon’s LAK series documentation.

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