Product Introduction
1. 96% Alumina (Al2O3) is one of the most popular ceramic substrate materials because of its excellent heat resistance, high mechanical strength, abrasion resistance, and small dielectric loss. The surface of the alumina ceramic substrate is quite smooth and has a low porosity.
2. 96% Alumina substrates 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.
Product Parameters
| Alumina Ceramic Substrate | |||
| 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 |
Manufacturing Capacity
Products of various specifications can be produced. The table below shows our standard thicknesses and sizes.
| Alumina Ceramic Substrate | |||||||
| 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. | |||||||
Product Recommendations
Beside bare ceramic substrates, we also manufacture metallized ceramic PCBs. Metallized ceramics is one of our advantageous products.
