China 96% Alumina Ceramic Substrate (customized size) |, Find details about China Alumina Content: 96%, Good Thermal Conductivity from 96% Alumina Ceramic Substrate (customized size) |
| Characteristic | Test Condition | Unit | Qualified | Fine | ||
| Color | White dense | White dense | ||||
| Size (mm) | can be customized (max :100*290) | |||||
| Length Tolerances | ±0.7% (Min:0.13mm) | ±0.5% (Min:0.1mm) | ||||
| Thickness (mm) | 0.38/0.5/0.635/0.8/1.0 (any thickness between 0.38 and 1.2) | |||||
| Thickness Tolerances | ±7% (Min:0.05mm) | ±5% (Min:0.05mm) | ||||
| Camber | ≤0.5% | ≤0.3% | ||||
| Grain Size | μm | 3~5 | 3~5 | |||
| Surface Roughness | Ra | μm | 0.2~0.5 | 0.2~0.4 | ||
| Density | g/cm3 | ≥3.70 | ≥3.72 | |||
| Physical Properties | Flexural Strength | MPa | ≥380 | ≥400 | ||
| Hardness | Loaded 4.9 | GPa | ≥14 | ≥15 | ||
| Water Absorption | % | 0 | 0 | |||
| Thermal Properties | Thermal Conductivity | 25ºC | W(m*k) | ≥22 | ≥24 | |
| Thermal Expansion | 25-500ºC | 10-6mm/ºC | 6.6~7.5 | 6.6~7.5 | ||
| 25-800ºC | 6.6~7.9 | 6.6~7.9 | ||||
| Thermal Shock Resistance | 850ºC | time | ≥6 | |||
| Specific Heat | J/(kg*K) | 880 | ||||
| Electrical Property | Dielectric Constant | 1MHz/25ºC | 9.4±0.3 | |||
| Dielectric Loss | 1MHz/25ºC | ×10-4 | ≤3 | |||
| Volume Resistivity | 25ºC | Ω*cm | >1014 | |||
| 500ºC | >1010 | |||||
| 700ºC | >109 | |||||
| Breakdown Voltage | KV/mm | >12 | >12 | |||