LAS2G391MELB40

The LAS2G391MELB40 is a snap-in terminal aluminum electrolytic capacitor designed for general-purpose power applications that require compact size and enhanced ripple endurance. It is a smaller-sized, high-voltage (400 V) snap-in can optimized for environments with voltage fluctuation and elevated thermal stress.

Key value propositions include a rated capacitance of 390 µF at 400 V, permissible abnormal voltage handling with improved safety features, and specified endurance under continuous rated ripple at 105°C.

Key Features

• Snap-in Terminal Package Radial, can-style snap-in mounting for secure mechanical and electrical connection in power assemblies.
• High Voltage / High Capacitance 390 µF capacitance rated at 400 V for bulk energy storage and smoothing in high-voltage rails.
• 105°C Endurance Designed to withstand 2000 hours of rated ripple current at 105°C when operated within specified conditions.
• Ripple Current Performance Rated ripple current of 1.55 A at 120 Hz and 1.782 A at 10 kHz; frequency coefficient table applies for other frequencies.
• Wide Operating Temperature Range Specified for operation from -25°C to +105°C, suitable for applications with temperature variation.
• Safety and Abnormal Voltage Handling Improved safety features and a pressure relief vent designed to operate under abnormal voltage conditions without dangerous ignition or dispersion.
• Compact Footprint Smaller case sizes than comparable series, with dimensions approximately L: 4 × D: 3 cm and a snap-in can form factor to save board space.
• RoHS Compliant Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Power Supplies Bulk smoothing and filtering where elevated ripple handling and 400 V rating are required.
• Equipment in Voltage-fluctuating Environments Designed for applications that experience unstable mains or transient voltages, thanks to improved safety under abnormal voltage.
• General Purpose Power Electronics Energy storage and decoupling in power conversion systems and control equipment operating up to 105°C.

Unique Advantages

• High-Temperature Endurance: Guaranteed operation for 2000 hours at 105°C under rated ripple conditions, supporting reliability in hot environments.
• Compact High-Voltage Solution: 400 V, 390 µF in a smaller snap-in case reduces board area for high-voltage bulk capacitance.
• Measured Ripple Performance: Specified ripple currents at 120 Hz and 10 kHz with documented frequency coefficients permit predictable thermal and lifetime planning.
• Built-in Safety Features: Pressure relief vent and testing for abnormal voltage scenarios reduce the risk of hazardous failures under overvoltage conditions.
• RoHS Compliance: Facilitates use in designs requiring restriction of hazardous substances.

Why Choose LAS2G391MELB40?

LAS2G391MELB40 positions itself as a dependable, compact snap-in aluminum electrolytic capacitor for high-voltage power designs that must tolerate elevated temperatures and voltage fluctuation. Its combination of 400 V rating, 390 µF capacitance, documented ripple capability, and 2000-hour endurance at 105°C makes it suitable for engineers specifying reliable bulk capacitance in constrained spaces.

This part is appropriate for designers of industrial power supplies, control equipment, and other general-purpose power electronics that require a balance of compact size, verified ripple handling, and safety under abnormal voltage conditions. Long-term value comes from predictable endurance characteristics and RoHS compliance for regulated markets.

Request a quote or submit an inquiry for LAS2G391MELB40 to discuss pricing, availability, and integration guidance for your design.