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| Customization: | Available |
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| Application: | Electronic Devices, Lighting, Power Supply, Semiconductors |
| Material: | Al2O3 |
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1. 96% alumina (Al2O3) is one of the most popular ceramic PCB sheet materials because of its excellent heat resistance, high mechanical strength, abrasion resistance, and small dielectric loss. The surface of the alumina ceramic PCB sheet is quite smooth and has a low porosity.
2. 96% Alumina ceramic PCB sheets are suitable for thick film applications like hybrid PCB and component substrates or it can be used in direct plated copper sputtering.
3. 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.
| Alumina Ceramic PCB Sheet | |||
| Item | Unit | 96% Al2O3 | |
| Mechanical Properties | |||
| Color | / | / | White |
| Density | Drainage Method | g/cm3 | ≥3.70 |
| Light Reflectivity | 400nm/1mm | % | 94 |
| Flexural Strength | Three Point Bending | MPa | >350 |
| Fracture Toughness | Indentation Method | MPa·m1/2 | 3.0 |
| Vickers Hardness | Load 4.9N | GPa | 14 |
| Young's Modulus | Stretching Method | GPa | 340 |
| Water Absorption | % | 0 | |
| Camber | / | Length‰ | T≤0.3: ≤5‰, Others: ≤3‰ |
| Thermal Properties | |||
| Max. Service Temperature (Non-loading) | / | ºC | 1200 |
| CTE (Coefficient of Thermal Expansion) |
20-800ºC | 1×10-6/ºC | 7.8 |
| Thermal Conductivity | 25ºC | W/m·K | >24 |
| Thermal Shock Resistance | 800ºC | ≥10 Times | No Crack |
| Specific Heat | 25ºC | J/kg·k | 750 |
| Electrical Properties | |||
| Dielectric Constant | 25ºC, 1MHz | / | 9.4 |
| Dielectric Loss Angle | 25ºC, 1MHz | ×10-4 | ≤3 |
| Volume Resistivity | 25ºC | Ω·cm | ≥1014 |
| Dielectric Strength | DC | KV/mm | ≥15 |
We can customize alumina ceramic PCB sheets according to your requirements. The table below shows our standard sizes.
| Alumina Ceramic PCB Sheet | |||||||
| 96% Al2O3 | |||||||
| Thickness (mm) | Maximum Size (mm) | Shape | Molding Technique | ||||
| As Fired | Lapped | Polished | Rectangular | Square | Round | ||
| 0.25 | 120 | 114.3 | 114.3 | √ | Tape Casting | ||
| 0.3 | 120 | 114.3 | 114.3 | √ | Tape Casting | ||
| 0.38 | 140×190 | √ | Tape Casting | ||||
| 0.5 | 140×190 | √ | Tape Casting | ||||
| 0.635 | 140×190 | √ | Tape Casting | ||||
| 0.76 | 130×140 | √ | Tape Casting | ||||
| 0.8 | 130×140 | √ | Tape Casting | ||||
| 0.89 | 130×140 | √ | Tape Casting | ||||
| 1 | 280×240 | √ | Tape Casting | ||||
| 1.5 | 165×210 | √ | Tape Casting | ||||
| 2 | 500×500 | √ | Tape Casting | ||||
| Other special thicknesses within the thickness range of 0.1-2.0mm can be achieved by lapping. | |||||||
Beside bare ceramic PCB sheets, we also make metallized ceramic substrates. Metallized ceramics is one of our advantageous products.
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