TIMs

Carbon Fiber Sheet Prototype Challenges Thermal Grease

August 9th, 2012

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Sony Chemical & Information Device Corp. displayed a prototype of a sheet whose thermal conductivity it claims is equivalent to that of thermal grease and has a longer life span.

The sheet, known as EX20000C, uses a combination of silicon and carbon fibers to produce a thermal conductive layer that is between 0.3 and 2mm thick and has a thermal resistance rating of 0.4-0.2K·cm2/W.

Sony Chemical & Information Device expects that the new sheet (when made available for production) will be employed for servers, high-end projectors, and similar devices as a replacement for thermal grease due to its cooling efficiency and ease of use.

In a side-by-side comparison, the Sony prototype cooled a CPU to a temperature three degrees cooler than that achieved by thermal grease on an identical CPU. Sony has been developing thermal sheets for years but has never before developed a cooling capacity that could rival thermal grease.

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