Customization: | Available |
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Application: | Electronic Devices, Lighting, Power Supply, Semiconductors, Refractory, Electronics, Structure Ceramic, Industrial Ceramic, Functional Ceramic |
Material: | Alumina Ceramic |
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Ceramic substrates are commonly used materials in power modules. They have special thermal, mechanical, and electrical properties that make
them ideal for demanding power electronics applications. These substrates enable the electrical function of the system and provide mechanical
stability and excellent thermal performance so as to meet the requirements of various unique designs.
Characteristics of Alumina Ceramic Substrates
1. High Wear & Chemical Resistance | 2. Heat Resistant | 3. High Mechanical Strength |
4. Small Dielectric Loss | 5. Good Thermal Conductivity | 6. High Light Reflection |
7. 0% Water Absorption |
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 |
1. 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. |
2. For products that require high dimensional accuracy, we can use various processing methods to process ceramic substrates, such as lapping,
polishing, laser scribing, laser cutting, etc.
The company has a strong processing capacity. We offer bare ceramic substrates in various raw materials, sizes, shapes and thicknesses. Contact us today with your specifications.