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Master Bond adhesives

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CeramTec CeramCool® Alunit® Aluminum Nitride
Categories: Ceramic; Nitride

Material Notes: CeramCool® is a metallized ceramic heat-sink for high power applications demonstrated by high power LED-systems. CeramCool® material characteristics: electrical insulation, high volume resistivity, thermal cycling stability, high breakthrough voltage, no corrosion, and no water intrusion. Benefits of CeramCool®: optimized thermal management, passive cooling, absorption of thermal stress, increased lifetime of die, higher color stability, reduction TCE mismatch, thermal expansion coefficient of semiconductor materials, one system for alignment of sources, simplified system, miniaturization, weight reduction, cost reduction, and high current conductors. CeramCool® can be metallized directly with thick or thin film processes such as conventional ceramic substrates. This makes the complete surface of the heat-sink useable as a circuit carrier while providing reliable electrical insulation. CeramCool® is available from the proven ceramic material Alunit®. This material has a thermal expansion coefficient that is adapted to semi-conductor materials, possesses excellent electrical characteristics and is at the same time corrosion-resistant. CeramCool® is available with or without metallizations.

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Physical PropertiesOriginal ValueComments
Density 3.33 g/ccASTM-C20
Water Absorption 0.00 %ASTM-C373
Particle Size 4.0 - 5.0 µmMedium Grain (d50)
 
Mechanical PropertiesOriginal ValueComments
Modulus of Elasticity 320 GPaASTM-F417
Flexural Strength 360 MPaBending Strength; 4-point method (40x4x3 mm³); ASTM-F417
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+13 ohm-cmASTM-D257
Dielectric Constant 9.0
@Frequency 1e+6 Hz
Dielectric Breakdown 16000 V
@Thickness 1.00 mm
ASTM-D149
Dielectric Loss Index 0.00040
@Frequency 1e+6 Hz
ASTM-D150
 
Thermal PropertiesOriginal ValueComments
CTE, linear 4.70 µm/m-°C
@Temperature 20.0 - 300 °C
ASTM-C372
 5.20 µm/m-°C
@Temperature 20.0 - 600 °C
ASTM-C372
 5.60 µm/m-°C
@Temperature 20.0 - 1000 °C
ASTM-C372
Specific Heat Capacity 0.738 J/g-°C
Thermal Conductivity 180 W/m-K
@Temperature 20.0 - 100 °C
ASTM-C408
 
Descriptive Properties
ColorTranslucent Medium Gray
Ra = Arithmetic Mean Roughness Value (µm)Profilometer (0.8 mm cutoff)

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