3M™ Fluorinert™ Electronic Liquid FC-40

3M™ Fluorinert™ Electronic Liquid FC-40 is a clear, colorless, thermally stable, fully-fluorinated liquid ideal for use in many single-phase heat transfer applications in the semiconductor manufacturing industry. Its liquid range (-57°C to 165°C) makes it ideal for a variety of applications such as etchers, ion implanters, testers and others. Other uses include heat transfer for data centers, high performance computing, power electronics and aviation electronics. Fluorinert liquid FC-40 is also used for electronics testing. Because Fluorinert liquid FC-40 is primarily a single compound, its composition will not shift or fractionate with time. This keeps fluid loss to a minimum enabling transport properties to remain unchanged.

Technical Physical Properties of 3M™ Fluorinert™ Electronic Liquid FC-40

Features of 3M™ Fluorinert™ Electronic Liquid FC-40

• Designed as a dielectric heat transfer fluid for cooling and thermal management of electronic and electrical systems

• Excellent electrical insulation properties with high dielectric strength, allowing safe direct contact with energized components

• High boiling point (~155°C) suitable for single-phase cooling and high-temperature applications

• Chemically and thermally stable, resistant to oxidation and degradation over long operating periods

• Low surface tension enables effective wetting of complex geometries and tight electronic assemblies

• Moderate viscosity supports efficient circulation and reliable heat transfer performance

• Non-flammable and non-corrosive, ensuring safe operation in sensitive environments

• Leaves no residue after evaporation, ideal for clean processes and contamination-sensitive applications

• Compatible with a wide range of materials including metals, plastics, and elastomers

• Low toxicity and inert behavior, suitable for controlled industrial environments

• Narrow boiling range (single-component fluid) ensures consistent thermophysical properties over time

Applications of 3M™ Fluorinert™ Electronic Liquid FC-40

Helps provide:

• Effective heat dissipation in high-power electronics and systems with high heat flux

• Reliable cooling for data centers, servers, and high-performance computing (HPC) systems

• Stable thermal management for semiconductor manufacturing equipment and precision processes

• Consistent temperature control in electronics testing, burn-in, and thermal cycling

• Safe cooling solution for telecommunications and industrial electronic equipment

Can serve as:

• A dielectric fluid for single-phase immersion cooling systems

• A heat transfer medium in recirculating cooling loops and closed thermal systems

• A cooling and insulating fluid for power electronics, transformers, and high-voltage devices