Alumina 96%

Alumina is generally available in two concentrations: 99.5% and 96%. This ceramic is the workhorse of the microwave integrated circuit (MIC) business. 96% alumina is primarily used in high-temperature co-fired circuits, while 99.5% alumina is primarily used in thin film networks.

The data came from CoorsTek. The other 4% of the material is probably made up of some type of glass to lower the melting temperature.

Formula or Composition Al2O3
Dielectric Constant (Alumina 96%) 9.0
Dissipation Factor (a.k.a. loss tangent, or tanAlumina 96%) 0.0002
Temperature Coefficient of Alumina 96% ppm/°C
Bulk Resistivity >10E14 Alumina 96%-cm
Temperature Coefficient of Resistivity (TCR) ppm/°C
Mass Density 3.72 gr/cc
Specific Heat 0.88 J/g/°C
Thermal Conductivity (k) 24.7 W/m°C
Temperature Coefficient of Expansion (TCE) 8.2 ppm/°C
Melting Point °C

Author : Unknown Editor