Searching from applications: Characteristics of SiC

For high thermal conductive filler and exothermic material

  • Ultrafine silicon carbide powder
  • Globular SiC

Recently Semiconductor device and electronic devices for LED are getting smaller and moving toward high scale integration. This will keep heat internally and can not radiate heat and will make problem on product. So filler which has high thermal conductivity is need such as thermal grease, thermal sheet in order to radiate the heat fast. Our SiC has high heat radiation and high thermal conductivity and also very stable material which is easy to handle. Also we have line up for higher conductivity products which will make us pursuing unlimited possibility for SiC.

Characteristics of SIC

Thermal radiation rate(ε) 0.9
Thermal conductivity (W/m·K) 270
The rate of thermal expansion(10-6/ °C) 20 °C 4.5
luminous reflectance
(240nm to 2,600nm)
18 %
Hardness New Mohs hardness: 13
(diamond new Mohs hardness: 15)
Bulk specific gravity 3.15 to 3.20 g/cm3
Chemical resistance Silicon carbide (SiC) is chemically stable, and resists corrosion by acids and bases

Thermal emissivity of each quality of the material (reference value)

Name Thermal radiation rate Name Thermal radiation rate
Silicon carbide 0.9 Alumina 0.4
Aluminum 0.2 Copper 0.1
Metal 0.3 Zirconia oxide 0.7
Zinc oxide 0.1 Magnesium oxide 0.4

Thermal conductivity of silicon carbide and other ceramics & metals (W/(m·k))

Note: numbers in parentheses are thermal conductivity values.
See thermal conductivity values, document values.
* More details about the high thermal conductive products, please feel free to contact us.
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