LAK2G390MELZ20ZB

The LAK2G390MELZ20ZB is a snap‑in terminal aluminum electrolytic capacitor designed for general‑purpose use where high voltage and thermal endurance are required. It delivers 39 µF capacitance at a 400 V rating in a radial, can‑style snap‑in package (φ22 × 20 mm).

Engineered for applications exposed to voltage fluctuations, this part combines a 2000‑hour endurance at 105°C with improved safety features for abnormally excessive voltage, offering a reliable bulk and filtering solution for power systems and equipment operating in variable environments.

Key Features

• High Voltage Rating — 400 V rated voltage suitable for higher‑voltage power and filtering circuits.
• Capacitance and Tolerance — 39 µF nominal capacitance with ±20% tolerance (120 Hz, 20°C) for predictable bulk energy storage and decoupling.
• Thermal Endurance — 2000 hours life at 105°C, providing sustained performance under elevated temperature stress.
• Ripple Current Capability — Low‑frequency ripple current 300 mA (120 Hz) and high‑frequency ripple current 345 mA (10 kHz) to support filtering across common switching and line frequencies.
• Low Loss — Tangent of loss angle (tan δ) specified at 0.20 max (120 Hz, 20°C) for stable dissipation characteristics.
• Leakage Current — Typical leakage current listed at 370 µA to inform standby and leakage budgets in power designs.
• Package and Mounting — Radial, can‑style snap‑in package (φ22 × 20 mm) for secure board mounting and mechanical stability.
• Operational Range — Rated for -25°C to +105°C operation to cover a wide set of operating environments.
• Safety and Reliability — Improved safety features for abnormally excessive voltage and a pressure relief vent designed to operate without dangerous conditions.
• RoHS Compliant — Meets RoHS directive requirements.

Typical Applications

• General‑purpose power filtering — Bulk smoothing and decoupling in power supplies and converters where a 400 V rating and reliable ripple handling are required.
• Equipment exposed to fluctuating voltages — Designed for use in systems subject to voltage variation, offering tolerances and safety features to withstand abnormal voltage conditions.
• Industrial and commercial electronics — Energy storage and line filtering in control equipment and instrumentation that require high temperature endurance.

Unique Advantages

• High‑temperature endurance: 2000 hours at 105°C supports long operational life under elevated thermal stress.
• High voltage capability: 400 V rating enables use in higher‑voltage power stages without upsizing capacitance or sacrificing stability.
• Dual‑frequency ripple handling: Specified ripple currents at 120 Hz and 10 kHz cover both line and switching frequency requirements.
• Safety‑oriented design: Improved safety features and a pressure relief vent help mitigate risks from abnormal overvoltage events.
• Compact snap‑in package: φ22 × 20 mm radial can with snap‑in terminals for robust board mounting and simplified assembly.
• Regulatory compliance: RoHS compliance supports environmental and regulatory requirements.

Why Choose LAK2G390MELZ20ZB?

The LAK2G390MELZ20ZB positions itself as a reliable, high‑voltage aluminum electrolytic solution for designs that demand sustained performance at elevated temperatures and exposure to fluctuating voltages. Its 39 µF/400 V specification, combined with 2000 hours of endurance at 105°C and defined ripple current ratings, makes it suitable for power filtering and energy storage roles in industrial and commercial systems.

Engineers specifying this capacitor benefit from defined electrical and thermal characteristics, safety‑focused construction, and RoHS compliance—delivering measurable reliability and predictable behavior for medium‑to‑high voltage power designs.

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