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Showa Denko Develops Carbon-coated Foil-tape Heat Spreader

Published on 2016-01-13. Author : SpecialChem

Showa Denko K.K. (SDK) (TOKYO: 4004) has developed new types of carbon-coated foil-tape heat spreader to be used to enhance heat radiation efficiency of semiconductors and other electronic parts. SDK adds these new products to its lineup of carbon-coated foil-tape heat spreader, “HS Series,” and will start shipment of their samples in this January.


In recent years, miniaturization and integration of electronic parts have been progressing, and the amount of heat generated per unit area of electronic device has been increasing. Therefore, the quality of applied heat radiation technology has a great influence on the life and reliability of electronic devices. “HS Series” is a lineup of foil-tape heat spreader for electronic materials and parts, consisting of carbon and metal foil. When a sheet of it is stuck directly on the surface of electronic parts, it efficiently spreads and radiates heat, and suppresses rises in temperature of electronic parts. In April 2015, SDK developed “HS-2000” series, which is a composite of carbon and aluminum foil, and started shipment of its samples. This time, SDK developed “HS-2500,” a composite of carbon and aluminum foil with improved flexibility, and “HS-3000,” a composite of carbon and copper foil with less thickness than conventional copper foil heat-radiating sheet.

Electronic devices equipped with “HS Series” show 15% less or lower temperature rises than those equipped with conventional copper foil heat-radiating sheet, because HS Series products’ carbon coat layer, which has high heat radiability, boosts heat radiation from the surface of metal foil*. HS Series is easy to be punched or bended. Moreover, HS-2500 and HS-3000 have more adaptability to three-dimensional curved surfaces than HS-2000, because HS-2500 and HS-3000 have metal layer with more flexibility or less thickness. Thus, HS-2500 and HS-3000 can be attached to complex surfaces of electronic parts with unevenness and many curves.

Fig. 1: HS-2500

Fig. 2: HS-3000

Comparison of inside temperature of heaters
Fig. 3: Comparison of inside temperature of heaters

Mechanism to spread and radiate heat
Fig. 4: Mechanism to spread and radiate heat
About Showa Denko Group

The Showa Denko Group continues to create excellent individualized products through interconnection of inorganic, aluminum, and organic chemical technologies, thereby contributing to society in which affluence and sustainability are harmonized.

Source: Showa Denko Group

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