Substrato de cerâmica de alumina
Alumina ceramic substrates are a type of ceramic substrate that is made of aluminum oxide. They are a high-performance material with excellent electrical, thermal, and mechanical properties. Alumina ceramic substrates are used in a variety of applications, including printed circuit boards, power devices, and sensors.
Ceramic Substrate Manufacturing Company
Great Ceramic provides a variety of alumina ceramic substrates of different purity, which are produced by tape casting and mold pressing. It mainly has the characteristics of superior comprehensive performance, good thickness uniformity and high density. Various shapes can be customized according to customer needs through laser cutting and other processes, and surface metallization can be performed.
Properties of Alumina Ceramic Substrate
Basic properties of ceramic substrates
| Artigos | Unidade | 96% Al2O3 | 99% Al2O3 | 99,6% Al2O3 | ZTA | AlN-170 | AlN-200 | AlN-230 |
| Cor | - | Branco | Amarelo | Branco | Branco | Cinzento/Bege | Cinzento/Bege | Cinzento/Bege |
| Densidade volúmica | g/cm³ | 3.7 | 3.88 | 3.9 | 4.1 | 3.3 | 3.3 | 3.3 |
| Rugosidade da superfície | um(Ra) | 0.2~0.75 | 0.2~0.75 | 0.05~0.15 | 0.1~0.2 | ＜0.8 | ＜0.8 | ＜0.8 |
| Camber | comprimento ‰ | ≤3 | ≤3 | ≤3 | ≤3 | ≤3 | ≤3 | ≤3 |
Mechanical properties of substrate
| Artigos | Unidade | 96% Al2O3 | 99% Al2O3 | 99,6% Al2O3 | ZTA | AlN-170 | AlN-200 | AlN-230 |
| Resistência à flexão | MPa | ≥350 | ≥400 | ≥450 | ≥600 | ≥400 | ≥350 | ≥300 |
| Resistência à fratura | MPa-m1/2 | 3.0 | 3.2 | 3.2 | 4.0 | 3.0 | 2.6 | 2.4 |
| Dureza Vickers | GPa | 15 | 15 | 16 | 15 | 11 | 11 | 11 |
Thermal properties of the substrate
| Artigos | Unidade | 96% Al2O3 | 99% Al2O3 | 99,6% Al2O3 | ZTA | AlN-170 | AlN-200 | AlN-230 |
| Condutividade térmica | W/m-k(25℃) | ≥24 | ≥26 | ≥29 | ≥27 | ≥170 | ≥195 | ≥225 |
| Coeficiente de expansão térmica | ×10-6/k (25℃~800℃) | 7.8 | 7.9 | 7.9 | 8.0 | 4~6 | 4~6 | 4~6 |
| Resistência ao choque térmico | ≥10(800℃) | Sem fissuras | Sem fissuras | Sem fissuras | Sem fissuras | Sem fissuras | Sem fissuras | Sem fissuras |
| Capacidade térmica | J/(kg-k) | 750 | 780 | 780 | 720 | 720 | 720 | 720 |
Electrical properties of the substrate
| Artigos | Unidade | 96% Al2O3 | 99% Al2O3 | 99,6% Al2O3 | ZTA | AlN-170 | AlN-200 | AlN-230 |
| Resistência do volume | Ω-cm(20℃) | ≥1014 | ≥1014 | ≥1014 | ≥1014 | ≥1014 | ≥1014 | ≥1014 |
| Constante dieléctrica | 1MHz | 9~10 | 9~10 | 9~10 | 10.4 | 9.7 | 8.7 | 8.5 |
| Perda dieléctrica | 1MHz | 3×10-4 | 3×10-4 | 3×10-4 | 3×10-4 | 4×10-4 | 4×10-4 | 4×10-4 |
| Resistência dieléctrica | KV/mm | ≥15 | ≥15 | ≥15 | ≥10 | ≥15 | ≥15 | ≥15 |
Nota: Cada lote pode ser diferente, apenas para referência.
Nota: visualize-o no seu computador.
Dimensions Of Ceramic Substrate
Great Ceramic offers a variety of standardized sizes of alumina ceramic substrates to meet customer needs. In addition, we also provide customers with customized services for ceramic substrates, and the size of the substrate can be customized according to customer needs.
| 50.8×50.8 | 76.2×76.2 | 101.6×101.6 | 114.3×114.3 |
| 120×120 | 127×127 | 132×142 | 138×190 |
| 145×195 | 240×280 | 87×400 | 95×400 |
| Thickness can be customized upon request. The normal thickness is: 0.20, 0.25, 0.38, 0.50, 0.635, 0.76, 0.80, 0.90, 1.0, 1.2 |
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Our Ceramic Substrate Manufacturing Capabilities
- Thickness: minimum 0.2mm, maximum 3.0mm;
- Length: ≤420mm;
- Width: ≤240mm;
- Aperture: 0.03mm (laser processing), 0.07mm (mold die-casting);
- Distance: The minimum distance between the hole or groove and the edge is 0.2mm.
Dimensions and Tolerance Tables
| Artigos | Stamped substrates | Lasered substrates | |||
| Qualified | Superior | Qualified | Superior | ||
| Length tolerances | T≤0.645 | ±0.7% Min:±0.1 |
±0.5% Min:±0.05 |
+0.20/-0.05 | +0.15/-0.05 |
| 0.635＜T≤1.0 | +0.25/-0.10 | +0.20/-0.05 | |||
| 1.0＜T≤1.2 | +0.30/-0.10 | +0.25/-0.10 | |||
| Thickness tolerances | ±10% Min:±0.06 |
±7% Min:±0.05 |
±10% Min:±0.05 |
±7% Min:±0.05 |
|
| Distance tolerances between snap-lines or holes | ±0.6% Min:±0.10 |
±0.5% Min:±0.05 |
±0.05 | ±0.05 | |
| Hole diameter tolerances | T≤0.645 | ±0.8% Min:±0.06 |
±0.7% Min:±0.05 |
±0.075 | ±0.05 |
| T＞0.635 | ±0.1 | ±0.075 | |||
| Tolerance of distance from edge to snap-line or hole | T≤0.645 | ±0.6% Min:±0.1 |
±0.5% Min:±0.05 |
+0.15/-0.05 | +0.15/-0.05 |
| 0.635＜T≤1.0 | +0.20/-0.05 | +0.20/-0.05 | |||
| 1.0＜T≤1.2 | +0.25/-0.10 | +0.25/-0.10 | |||
| Overall camber | 0.3% Min:0.05 |
0.25% Min:0.05 |
0.3% Min:0.05 |
0.25% Min:0.05 |
|
| Parallelism/Verticality | 0.5% longest edge size | 0.4% longest edge size | 0.3% longest edge size | 0.2% longest edge size | |
