3M™ Fluorinert™ Electronic Liquid FC-70

3M™ Fluorinert™ Electronic Liquid FC-70 is a clear, colorless, fully-fluorinated liquid. Like other Fluorinert electronic liquids, Fluorinert liquid FC-70 is thermally and chemically stable, compatible with sensitive materials, nonflammable, demonstrates low toxicity and leaves essentially no residue upon evaporation. This unique combination of properties makes Fluorinert liquid FC-70 ideal for many electronics applications, including vapor phase soldering and thermal management.

An ideal fluid for use in condensation reflow soldering, the saturated vapor generated boiling Fluorinert liquid FC-70 is very dense and easily contained. The elimination of oxygen allows for use of mild flux compounds, simplifying the cleaning of finished circuit boards.

Other uses for Fluorinert liquid FC-70 include heat transfer, electronics testing and inert reaction media.

Technical Physical Properties of 3M™ Fluorinert™ Electronic Liquid FC-70

Features of 3M™ Fluorinert™ Electronic Liquid FC-70

• Designed as a dielectric heat transfer fluid for cooling high-power and high-temperature electronic systems

• Excellent electrical insulation with high dielectric strength, enabling safe contact with energized components

• Very high boiling point (~215°C) suitable for elevated temperature and extreme operating conditions

• Outstanding thermal and chemical stability, resistant to oxidation and degradation over long service life

• Higher viscosity compared to lighter Fluorinert fluids, supporting stable operation in controlled flow systems

• Low surface tension allows good wetting of components and complex geometries

• Non-flammable and non-corrosive, ensuring safe use in critical environments

• Leaves no residue and is chemically inert, ideal for clean and sensitive electronic applications

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

• Narrow boiling range (single-component fluid) ensures consistent and predictable performance

• Low toxicity and environmentally stable for industrial use

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

Helps provide:

• Reliable heat removal in high-temperature and high-power electronic systems

• Stable thermal control for semiconductor manufacturing and precision processing equipment

• Effective cooling in power electronics such as transformers, rectifiers, and high-voltage systems

• Consistent temperature environments for testing, burn-in, and reliability evaluation of electronic components

• Safe cooling solution for specialized industrial and research equipment

Can serve as:

• A dielectric fluid for single-phase immersion cooling, especially in high-temperature applications

• A heat transfer medium in closed-loop cooling systems requiring thermal stability and insulation

• A replacement for conventional oils where cleanliness, non-flammability, and dielectric properties are critical