Alumina Substrate
Alumina Substrate
Characteristics：
Alumina substrates can maintain stable physical and chemical properties in high temperature environments. It has excellent performance for thermal shock .
Alumina substrate is suitable for high temperature and harsh environments, and are resistant to erosion and wear.
It’s an ideal material for a wide range of industrial, automotive and aerospace applications.
Sintronic provides high purity 99.6% alumina substrates.
It has excellent surface quality and higher strength and heat dissipation that provides better substrates fitting high end industry and automotive design and assembly.
It has
- Good surface quality and flatness
- High thermal conductivity
- Low warpage
- Excellent mechanical strength
Dimensions:
- Maximum size : 190x140mm
- Minimum thickness : 0.1mm
- Maximum size for special requirement : 240x240mm
- Camber <0.3%
Material Characteristics：
| ITEM | Al2O3 99.6% |
| Bulk Density (g/cm3) | ≧ 3.85 |
| Water absorption (%) | 0 |
| Roughness( Ra) µm | ≦ 0.2 |
| 3-point Flexural strength (MPa) | ≧500 |
| Thermal conductivity(20℃) W/m K | ≧30 |
| Coefficient of thermal expansion | 6.8 |
| Volume Resistance(25℃) | >1014 |
| Dielectric Constant(1MHz) | 9.9 |
| Dielectric strength (KV/mm)-DC | > 15 |