LASW6271MELB40ZB

The LASW6271MELB40ZB is a snap-in terminal type aluminum electrolytic capacitor from Nichicon’s LAS series designed for high-voltage, general-purpose power applications. Its compact snap-in can construction combines a 270 µF capacitance with a 420 V rated voltage to support smoothing and energy storage in systems exposed to voltage fluctuations.

Built for elevated operating temperature and sustained ripple workloads, this capacitor delivers long endurance at 105 °C along with safety features intended to mitigate abnormal overvoltage conditions.

Key Features

• Capacitance & Voltage — 270 µF nominal capacitance with a 420 V rated voltage and ±20% tolerance (at 120 Hz, 20 °C).
• High-temperature Endurance — Designed to withstand 2000 hours of rated ripple current at 105 °C, supporting prolonged operation under elevated ambient temperatures.
• Ripple Current Performance — Rated ripple current of 1.1 A at 120 Hz and 1.265 A at 10 kHz, with frequency coefficients provided for other frequencies.
• Permissible Abnormal Voltage & Safety — Improved safety features for abnormally excessive voltage, including a pressure relief vent that operates without dangerous flame or fragmentation under test conditions.
• Package & Mounting — Radial, snap-in can package for robust board mounting and mechanical retention in power assemblies.
• Operating Temperature Range — Specified for −25 °C to +105 °C operation to accommodate demanding thermal environments.
• Leakage Current Specification — Leakage current specified per datasheet formula after 5 minutes’ application of rated voltage at 20 °C.
• RoHS Compliant — Conforms to the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Power supply smoothing and filtering — Provides bulk capacitance and ripple handling for AC/DC and DC/DC power stages operating at high voltage.
• Equipment exposed to fluctuating voltages — Intended for systems that experience irregular line or load conditions where permissible abnormal voltage performance is beneficial.
• Industrial power assemblies — Snap-in mounting and high-temperature endurance make it suitable for compact power modules and industrial control equipment.

Unique Advantages

• Compact, smaller-sized design — Smaller case sizes compared with earlier LAQ series variants, enabling space savings in power assemblies.
• Extended ripple life at high temperature — 2000-hour rated ripple endurance at 105 °C reduces maintenance and replacement frequency in hot environments.
• Improved overvoltage safety — Designed safety features and a pressure relief vent reduce the risk of hazardous failure modes under abnormal voltage stress.
• Predictable ripple performance across frequency — Published frequency coefficients allow engineers to size the capacitor for ripple at 50 Hz, 60 Hz, 120 Hz, 1 kHz and 10 kHz operating points.
• Robust board retention — Snap-in terminals provide secure mechanical mounting for vibration-prone or heavy-current power boards.
• Regulatory compliance — RoHS compliance supports use in regions requiring restriction of hazardous substances.

Why Choose LASW6271MELB40ZB?

LASW6271MELB40ZB is positioned for designers who require a high-voltage electrolytic capacitor that balances compact sizing with reliable ripple endurance and enhanced safety under abnormal voltage conditions. Its 420 V rating, 270 µF capacitance, and proven 2000-hour endurance at 105 °C make it suitable for demanding power filtering and energy storage roles.

This capacitor is especially appropriate for engineers building systems that operate in thermally challenging or voltage-fluctuating environments and who need a snap-in, board-secure solution that meets RoHS requirements while providing predictable ripple and leakage characteristics.

If you would like pricing, availability or a formal quote for LASW6271MELB40ZB, please request a quote or contact sales for more information.