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CeramTec CeramCool® Rubalit® 708 Alumina, 96%

Category Ceramic , Oxide , Aluminum Oxide
Manufacturer CeramTec North America
Trade Name CeramCool® Rubalit®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF CeramTec CeramCool® Rubalit® 708 Alumina, 96%.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 Rubalit® 708. 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 3.78 g/cc
0.137 lb/in³
ASTM-C20
Water Absorption 0.00 %
0.00 %
ASTM-C373
Particle Size 3.0 - 5.0 µm
3.0 - 5.0 µm
Medium Grain (d50)
Mechanical Properties Metric English Comments
Modulus of Elasticity 340 GPa
49300 ksi
ASTM-F417
Flexural Strength 400 MPa
58000 psi
Bending Strength; 4-point method (40x4x3 mm³); ASTM-F417
500 MPa
72500 psi
Bending Strength; dual-ring method (0.63 mm substrate thickness); DIN 52292
Thermal Properties Metric English Comments
CTE, linear 6.80 µm/m-°C

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

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

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

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

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

@Temperature 68.0 - 1830 °F
ASTM-C372
Specific Heat Capacity 0.800 J/g-°C
0.191 BTU/lb-°F
Thermal Conductivity 24.0 W/m-K

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

@Temperature 68.0 - 212 °F
ASTM-C408
Component Elements Properties Metric English Comments
Al2O3 96 %
96 %
Electrical Properties Metric English Comments
Volume Resistivity 1.00e+10 ohm-cm

@Temperature 600 °C
1.00e+10 ohm-cm

@Temperature 1110 °F
ASTM-D257
1.00e+11 ohm-cm

@Temperature 400 °C
1.00e+11 ohm-cm

@Temperature 752 °F
ASTM-D257
1.00e+12 ohm-cm

@Temperature 200 °C
1.00e+12 ohm-cm

@Temperature 392 °F
ASTM-D257
1.00e+13 ohm-cm

@Temperature 20.0 °C
1.00e+13 ohm-cm

@Temperature 68.0 °F
ASTM-D257
Dielectric Constant 9.8

@Frequency 1.00e+6 Hz
9.8

@Frequency 1.00e+6 Hz
10

@Frequency 1.00e+9 Hz
10

@Frequency 1.00e+9 Hz
Dielectric Breakdown 7000 V

@Thickness 0.250 mm
7000 V

@Thickness 0.00984 in
ASTM-D149
12600 V

@Thickness 0.630 mm
12600 V

@Thickness 0.0248 in
ASTM-D149
15000 V

@Thickness 1.00 mm
15000 V

@Thickness 0.0394 in
ASTM-D149
Dielectric Loss Index 0.00030

@Frequency 1.00e+6 Hz
0.00030

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