There are a number of key design criteria to consider when selecting a TIM for a specific application. Firstly, it is important to consider the amount of heat that needs to be dissipated. If there is a large amount of heat to dissipate, low thermal resistance products, such as thermal greases or PCMs, would be a much better choice. It is also important to consider the clamping pressure the TIM will be put under as this will determine the thermal resistance of the product, greatly impacting the selection of the material.