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Natural Graphite Thermal Interface Material
Natural graphite thermal interface material is made from natural graphite sheet material thus taking the advantages of the anisotropic thermal properties of natural graphite. Natural graphite exhibits high thermal conductivity in the plane of the sheet, together with a lower thermal conductivity through the thickness of the sheet. The natural graphite thermal interface material sheet therefore functions as a heat spreader and an insulator, and can eliminate hot spots in electronic equipment such as LED and street lighting, PCB boards, laptop computers, mobile phones, and other electronic components where over heating is to be avoided. Technical Specifications Base Material Natural Graphite Sheet Colour Black Thickness 0.127mm (ASTM D347) Hardness 80 Shore A (ASTM D2240) Density 1.45 g/cm3 (ASTM D792) Working Temperature -50 to +300 degree C Volume Resistivity 3*10 to the power of 13 ohms/sq. (ASTM D257) Conductivity (Vertical) greater than 10 W/m-K (ASTM D5470) Conductivity (Horizontal) greater than 240 W/m-K (ASTM D5470) Giving a high thermal conductivity of 250 W/mK and UL94-V0 flame rating, the thermal graphite material is available in sheet form. Custom designs to customer’s drawings are also available on request.

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