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CeramTec CeramCool® Alunit® Aluminum Nitride

Category Ceramic , Nitride
Manufacturer CeramTec North America
Trade Name CeramCool® Alunit®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF CeramTec CeramCool® Alunit® Aluminum Nitride.pdf
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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.
Physical Properties Metric English Comments
Density 3.33 g/cc
0.120 lb/in³
ASTM-C20
Water Absorption 0.00 %
0.00 %
ASTM-C373
Particle Size 4.0 - 5.0 µm
4.0 - 5.0 µm
Medium Grain (d50)
Mechanical Properties Metric English Comments
Modulus of Elasticity 320 GPa
46400 ksi
ASTM-F417
Flexural Strength 360 MPa
52200 psi
Bending Strength; 4-point method (40x4x3 mm³); ASTM-F417
Thermal Properties Metric English Comments
CTE, linear 4.70 µm/m-°C

@Temperature 20.0 - 300 °C
2.61 µin/in-°F

@Temperature 68.0 - 572 °F
ASTM-C372
5.20 µm/m-°C

@Temperature 20.0 - 600 °C
2.89 µin/in-°F

@Temperature 68.0 - 1110 °F
ASTM-C372
5.60 µm/m-°C

@Temperature 20.0 - 1000 °C
3.11 µin/in-°F

@Temperature 68.0 - 1830 °F
ASTM-C372
Specific Heat Capacity 0.738 J/g-°C
0.176 BTU/lb-°F
Thermal Conductivity 180 W/m-K

@Temperature 20.0 - 100 °C
1250 BTU-in/hr-ft²-°F

@Temperature 68.0 - 212 °F
ASTM-C408
Electrical Properties Metric English Comments
Volume Resistivity 1.00e+13 ohm-cm
1.00e+13 ohm-cm
ASTM-D257
Dielectric Constant 9.0

@Frequency 1.00e+6 Hz
9.0

@Frequency 1.00e+6 Hz
Dielectric Breakdown 16000 V

@Thickness 1.00 mm
16000 V

@Thickness 0.0394 in
ASTM-D149
Dielectric Loss Index 0.00040

@Frequency 1.00e+6 Hz
0.00040

@Frequency 1.00e+6 Hz
ASTM-D150
Descriptive Properties Value Comments
Color Translucent Medium Gray
Ra = Arithmetic Mean Roughness Value (µm) Profilometer (0.8 mm cutoff)
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