Poly Sapphire Substrate
(Translucent alumina)
Poly Sapphire Substrate (Translucent alumina)
Characteristics：
Poly Sapphire Substrate products maintain the excellent wear resistance, photoelectric and thermal conductivity characteristics of single crystal sapphire with a lower manufacturing cost.
Due to tape casting process, poly sapphire substrate is able to provide a much larger size for processes requirements.
Excellent processability Wide range of applications such as: LED filament, fingerprint identification protection cover, mobile phone protection cover, mobile phone back cover, smart wearable device protection sheet, lens protection cover, etc.
Suitable for LED lighting, mobile phone back cover industry.
Sintronic is the only company in Taiwan and China that provides high-quality poly sapphire substrates. The lapping and polishing after sintering are all completed in house. Customers are welcome to co- design and develop products of the required specifications.
Featured as
- Large size LED package substrate
- Excellent substrate surface and thickness tolerance with lapping and polising
- Thermal conductivity is 50% higher than that of 96% alumina substrates
- High transmittance, very suitable for optical design
Dimensions:
- Maximum size 180x180
- Thickness : as customer demand
Material Characteristics：
| ITEM | Al2O3 99.6% |
| Bulk Density (g/cm3) | ≧ 3.98 |
| Thermal conductivity(25℃) W/m K | 39.15 |
| Coefficient of thermal expansion (20～300℃) (10-6/K) | 6.8 |
| Dielectric strength (KV/mm)-DC | 30.45 |
| Volume Resistance(25℃) | >1015 |
| Dielectric Constant(1MHz) | 11.2 |
| 3-point Flexural strength (MPa) | 320 |
| Transmittance(%) | 79 |