3M™ Fluorinert™ Electronic liquids are part of a family of fully-fluorinated compounds known as perfluorocarbons, or PFCs. Fluorinert liquids are premier heat transfer fluids, and have long been used as heat transfer media for extreme cooling applications.

Originally used for direct contact cooling due to their stability, Fluorinert™ liquids are also used in a variety of semiconductor operations such as automated testing, etching, deposition, photolithography and more.

MIL-STD 883, Test Method 1014, MIL-STD 750, Test Method 1071, and MIL-STD 202, Test Method 112 specify Fluorinert liquids for gross leak testing of microelectronic circuits and components.

Fluorinert™ liquids offer:

  • Excellent dielectric properties
  • Wide range of boiling points
  • Good materials compatibility
  • Low toxicity
  • Non flammability
  • Zero Ozone Depletion Potential (ODP)
FC-3284  FC-72 FC-770 FC-3283 FC-40 FC-43 
Boiling Point(°C)505695128155174
Pour Point (°C)-73-90-127-50-57-50
Vapour Pressure (kPa)35.7306.61.40.430.19
Liquid Density (kg/171016801793182018501860
Co-efficient of Volume Expansion(°K-¹)0.00160.00160.00150.00140.00120.0012
Kinematic Viscosity (mm2/s)0.420.380.790.751.82.5
Absolute Viscosity0.710.641.
Specific Heat (J kg-¹ °K-¹)110010501038110011001100
Heat of Vapourisation @ B.P. (kJ/kg)1058886786870
Dielectric Strength (kV, 2.54mm gap)>40>40>40>40>40>40
Dielectric Constant (1 KHz)1.861.761.861.891.891.90
Volume Resistivity(Ω cm)2.3×10151.0×10153.0×10145.0×10154.0×10155.6×1015

View the 3M Thermal Management Fluids brochure