LAK2D391MELZ35ZB

The LAK2D391MELZ35ZB is a snap-in, radial aluminum electrolytic capacitor engineered for general-purpose applications requiring a 200 V rating and 390 µF capacitance. It is a snap-in terminal type designed for secure mounting and reliable performance in equipment exposed to fluctuating voltages.

Key value propositions include high-temperature endurance (2000 hours at 105°C), defined ripple current capability at both low and high frequencies, low leakage current, and built-in safety features for abnormal over-voltage conditions.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a rated voltage of 200 V and ±20% tolerance, suitable for a range of general-purpose designs.
• Temperature Range & Endurance — Rated for operation from −25°C to +105°C with a specified life of 2000 hours at 105°C under rated ripple conditions.
• Ripple Current Performance — Low-frequency ripple current: 1.2 A at 120 Hz; high-frequency ripple current: 1.44 A at 10 kHz, enabling sustained AC superposition on DC in specified conditions.
• Loss and Leakage Characteristics — Tangent of loss angle (tan δ) 0.20 max at 20°C and 120 Hz; measured leakage current 0.83 mA for this part.
• Safety & Robustness — Designed with improved safety features for abnormally excessive voltage and a pressure-relief vent to mitigate hazardous failure modes.
• Package & Mounting — Snap-in radial can (φ22 × 35 mm), tray packed for production handling and secure PCB placement.
• Environmental Compliance — RoHS compliant.

Typical Applications

• General Purpose Equipment — Suited for a variety of general-purpose electronic equipment where a 200 V, 390 µF snap-in capacitor is required.
• Voltage-Fluctuating Environments — Specifically noted as ideally suited for equipment used in areas with fluctuating voltages, benefiting from the part’s safety and endurance characteristics.
• Designs Requiring Elevated-Temperature Endurance — Applicable where continuous operation at temperatures up to 105°C and extended life under rated ripple current are required.

Unique Advantages

• High-Voltage Capability: 200 V rating accommodates designs requiring elevated DC voltage handling.
• Long High-Temperature Life: Endurance specified at 2000 hours at 105°C under rated ripple current provides predictable long-term behavior in hot operating environments.
• Dual-Frequency Ripple Ratings: Defined ripple performance at 120 Hz and 10 kHz gives clear design margins for both low- and high-frequency AC components.
• Controlled Dielectric Loss and Low Leakage: tan δ ≤ 0.20 (20°C, 120 Hz) and measured leakage current of 0.83 mA support efficient energy handling and reduced standby losses.
• Safety Mechanisms: Pressure-relief vent and improved features for abnormal voltage help reduce risk of hazardous failure modes under stress.
• Production-Friendly Packaging: Tray packing and snap-in terminals simplify handling and secure PCB assembly for volume manufacturing.

Why Choose LAK2D391MELZ35ZB?

The LAK2D391MELZ35ZB combines a robust 200 V, 390 µF electrical specification with mechanical reliability from its snap-in radial can design and tray packaging. Its measurable ripple-current ratings at both low and high frequencies, low leakage, and controlled loss tangent make it well suited to designs that need predictable filtering and energy-storage behavior under elevated temperatures.

This part is positioned for engineers and procurement teams seeking a RoHS-compliant, general-purpose electrolytic capacitor with defined high-temperature endurance and safety features for use in equipment subject to voltage fluctuation and sustained ripple stress.

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