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        Custom-made Ceramic
        and Glass Components

        High Thermal Conductivity Silicon Nitride

        Goodfellow can now offer high thermal conductivity Silicon Nitride. This material is ideal for specialist applications, and offers several benefits.

        • High thermal conductivity of 100W/mK. Which is 4X higher than standard Silicon Nitride. 
        • High fracture toughness. 
        • Can be polished to a surface roughness of Ra = 0.02um.  
        • Excellent mechanical properties.

        Typical Properties of this material

        Properties

        Units

        High Thermal Conductivity Silicon Nitride

        Density

        g/cm3

        3.3

        Flexural Strength

        (25°C) (MPa)

        700

        Linear Expansion Coefficient

        (25-800°C) (1/K)

        3x10-6

        Thermal Conductivity

        W/mK

        100

        Youngs Modulus

        GPa

        312

        Poissons Ratio

         

        0.29

        Volume Resistivity

         

        >1013

        Typical Applications

        • Power module substrates
        • Various types of heat sinks
        • LED mounting substrates
        • High frequency circuit substrates

        Shapes and sizes available

        The standard substrate size is 100mm x 100mm with a 0.32mm thickness. Different sizes and thicknesses are available upon request.

         

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