LASW6391MELC45

The LASW6391MELC45 is a snap-in terminal aluminum electrolytic capacitor in a radial can package, rated 390 µF at 420 V. It is optimized for high-voltage power conversion and bulk energy storage in equipment exposed to fluctuating line voltages.

Designed for robust thermal and ripple performance, this capacitor withstands 2000 hours of rated ripple current at 105°C and incorporates safety features to mitigate effects of abnormally excessive voltage. The component is RoHS compliant.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a 420 V rated voltage and ±20% tolerance for predictable bulk energy storage.
• Snap-in Can Package — Radial, can-type snap-in mounting (L: 4.5 × D: 3.5 cm) for secure PCB installation and efficient board layout.
• High-temperature Endurance — Designed to withstand 2000 hours of rated ripple current at 105°C; operating temperature range −25°C to +105°C.
• Ripple Current Performance — Rated ripple current of 1.3 A at 120 Hz and 1.495 A at 10 kHz; frequency coefficients provided for sizing across 50 Hz–10 kHz bands.
• Safety Features — Improved safety design for abnormally excessive voltage and a pressure relief vent engineered to operate without dangerous conditions such as flames or dispersion of case fragments.
• Leakage and Loss Characteristics — Leakage current specification of 1 ≤ 3√(μA) after 5 minutes at 20°C; tan δ maximum 0.20 (120 Hz, 20°C) for electrical stability.
• Regulatory Compliance — Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies — Bulk filtering and smoothing in AC‑DC and DC‑DC converters operating under fluctuating mains conditions, leveraging high-voltage rating and thermal endurance.
• Commercial Power Equipment — Energy storage and ripple suppression in UPS, power conditioners, and voltage-stabilizing equipment where safety under abnormal voltage is important.
• General Purpose Power Electronics — High-voltage bulk capacitor for filter networks and DC bus support in equipment specified for 400–450 V nominal systems.

Unique Advantages

• Durable at Elevated Temperatures — 2000‑hour endurance at 105°C under rated ripple current supports long-term operation in hot enclosures.
• Compact, Serviceable Form Factor — Smaller case size compared with the LAQ series and snap-in mounting reduce PCB footprint and simplify installation.
• Reliable Overvoltage Behavior — Safety-oriented construction and a pressure relief vent minimize hazardous outcomes during abnormal voltage events.
• Predictable Ripple Handling Across Frequency — Published ripple current values and frequency coefficients enable accurate thermal and lifetime calculations across low and high frequencies.
• Standards Compliance — RoHS compliance supports use in markets requiring reduced hazardous substances.

Why Choose LASW6391MELC45?

LASW6391MELC45 balances high-voltage capability, thermal endurance, and safety features in a compact snap-in can package. Its 420 V rating, 390 µF capacitance, and verified ripple performance make it suitable for designers specifying bulk energy storage and DC bus filtering where voltage fluctuation and elevated temperatures are common.

This part is well suited for electrical and power-engineering applications in industrial and commercial equipment that require reliable, serviceable electrolytic bulk capacitors with clear, published endurance and ripple characteristics.

If you would like pricing, availability, or technical support for LASW6391MELC45, request a quote or contact sales with the part number to initiate your inquiry.