lämmönjohtolevyt

Lämpöjohtolevyt, often translated as thermal conductive sheets or thermal pads, are materials designed to facilitate heat transfer between two surfaces. They are typically made from a combination of thermally conductive fillers embedded in a flexible matrix, such as silicone, epoxy, or ceramic. Their primary function is to fill microscopic air gaps between a heat-generating component, like a processor or LED, and a heat sink. Air is a poor conductor of heat, so by displacing it, thermal conductive sheets significantly improve the efficiency of heat dissipation.

These sheets are commonly used in electronics to prevent overheating and ensure optimal performance and longevity of components. Applications range from high-power computing devices and automotive electronics to consumer electronics like laptops and smartphones. The selection of a specific thermal conductive sheet depends on factors such as the required thermal conductivity, operating temperature range, pressure resistance, and electrical insulation properties. Different materials offer varying levels of thermal conductivity, measured in Watts per meter-Kelvin (W/mK).

The flexibility and compressibility of lämmönjohtolevyt allow them to conform to uneven surfaces, ensuring good contact and efficient heat transfer. They are available in various thicknesses and shapes, and can be die-cut to fit specific component geometries. In some cases, they may also offer electrical insulation, which is crucial when direct contact between components is to be avoided. Regular thermal paste remains an alternative for many applications, but thermal conductive sheets offer advantages in terms of ease of assembly, vibration resistance, and reusability in certain designs.