TPM550 Thermal Phase Change Material

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TPM550 is one of Electrolube’s latest high-performance thermal interface material innovations. It is a phase change material meaning that when it reaches its ‘activation’ temperature of 45°C it changes state to become a lower viscosity material, minimizing the contact thermal resistance and improving the thermal conductivity. Once it cools, it reverts back to its original state.


Approvals RoHS Compliant (2015/863/EU): Yes
Typical Properties Colour: Grey
Density @ 20°C (g/ml): 2.48
Dry Time @ 20°C 10 hours
Dry Time @ 60°C 2 hours
Phase Change Temperature: 45°
Thermal Conductivity: 5.5 W/m.K
Temperature Range: -40°C to +125°C
Thermal Resistance @ 70°C, 50psi: 0.012 °C.in2
Minimum Bond Line Thickness: 25µm
Shelf Life: 12 months
Directions for Use
Ensure surfaces are clean, free from dust, grease and other contaminants before use. Mix well by hand or jar
roller before using.
A uniform coating of 0.05 mm to 0.255 mm thickness should be applied For high volume applications stencilling
or screening is recommended, for the best results use a 61 (or less) threads per inch screen. Ensure that the
entire interface is covered to avoid hot-spots from forming. Any excess paste squeezed out during the mounting
process should be removed. In most cases allow for up to a 20% reduction in thickness due to material retention
on a screen printer and another 20% reduction for solvent evaporation. For example: Initial thickness on a screen
= 0.2mm, 20% retain on screen = 0.16mm, 20% reduction from solvent evaporation = 0.13mm

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