Graphite gaskets are die cut from thermal interface materials (TIMs) with strong thermal conductivity. Graphite also resists thermal shock, damage that occurs with rapid changes in temperature. Across planar surfaces like printed circuit boards (PCBs), graphite dissipates heat evenly and rapidly. Graphite’s mechanical properties increase with temperature, but die cut graphite gaskets resist cold, too.
Graphite is flexible and can be produced without fillers or binders that impart rigidity. Flexible graphite gaskets are die cut from expanded sheets or foil-core materials in a range of thicknesses. Thin, lightweight TIMs made of graphite sheets are ideal for heat spreading applications where space is limited. Graphite gaskets also support the use of pressure-sensitive adhesives (PSAs) for ease-of-installation.
By understanding how graphite sheets are supplied, die cut, and used, engineers can determine whether this TIM is the right choice for thermal management. Let’s take a closer look.