Alumina 96% (Al2O3) is one of the most popular ceramic substrates because of its excellent heat resistance, high mechanical strength, abrasion resistance, and small dielectric loss. The surface of>the alumina substrate is quite smooth and has a low porosity. Alumina 96% substrates are suitable for thick film applications like hybrid PCB and component substrates or it can be used in direct plated copper sputtering. Thanks to its adequate thermal conductivity, it can also be used as a heat spreader at the back of a PCB. It is also suitable for usage in high power and high-frequency applications because of dielectric properties.
Our OCTO brand blank alumina substrates are available in various sizes and thicknesses. Thanks to a large and live inventory, we can ship your part fast for you to start your project. Need higher quantities, contact us here.
For custom sizes or 2D laser machined Alumina substrates, get your quote and order online here.
Main characteristics:
- high wear & chemical resistance
- heat resistant
- high mechanical strength
- Small dielectric loss
- good thermal conductivity
- high light reflection
- 0% water absorption
Applications examples:
- LED lighting
- High-reliability applications
- High-frequency circuits
- Power electronics
- Photovoltaic Technology
- Applications for hazardous environments
Alumina Oxide material properties:
| Property | Items | Unit | Al2O3 96% |
|---|
| Physical | Color | - | White |
| Material - Aluminium Oxide | % | 96% |
| Water absorption | % | 0 |
| Reflectivity | % | 94 |
| Electrical | Dielectric Constant (1MHz) | - | 9-10 |
| Dielectric Loss | *10^-4 | 3 |
| Dielectric strength | MV/m or KV/mm | >15 |
| Insulation/Volume resistance | Ω·cm | >10^14 |
| Mechanical | Density after Sintering (Bulk density) | g/cm3 | >3.7 |
| flexural Strength (3 point) | Mpa | >400 |
| Surface Roughness | μm | 0.2～0.75 |
| Camber | Lenght% | ≦2 |
| Thermal | Coefficient of Thermal Expansion (CTE) | ppm/°C | 6.5-7.5 |
| Coefficient of Thermal Expansion (CTE) RT~500 °C | ppm/°C | 6.5-8.0 |
| Thermal Conductivity (25°C) | W/m‧K | 24 |
| * Reflectivity test reference thickness of 1mm |
The data shown is typical of commercially available material and is only offered for comparative purposes. The information shall not be interpreted as absolute material properties nor does it constitute a representation or warranty for which we assume legal liability. User shall determine the suitability of the material for the intended use and assumes all risk and liability whatsoever in connection therewith.
Standard tolerances
Thickness:
- < 1mm: 0.03mm
- >1mm & <1.5mm: +/- 0.05mm
- >1.5mm: +/- 0.07mm
Dimensional:
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