High Strength Ceramic Substrate for LED Usage
Specifications
1.Meet Rohs requirement2.small and compact
3.good quality
4.best price
5.Eco-friendly
96% Al2O3 Property of Ceramic Substrate
Item |
test condition |
Unit |
Index |
Color |
|
|
white |
Density |
|
g/cm3 |
3.7 |
Hardness |
load 4.9N |
GPa |
≥15 |
Bending Strength |
|
MPa |
≥274 |
Expansion coefficient |
20~500°C |
1×10-6mm/°C |
6.5~7.5 |
20~800°C |
6.5~8.0 |
||
Thermal conductivity |
20°C |
W/(m·K) |
≥20.9 |
Specific heat |
|
kJ/(kg·K) |
≥0.8 |
Insulation intensity |
|
KV/mm |
≥12 |
Volume resistivity |
20°C |
Ohm.cm |
≥1014 |
300°C |
≥1011 |
||
500°C |
≥109 |
||
Dielectric constant |
1MHz |
|
9~10 |
Dielectric loss Angle tangent |
1MHz |
|
≤3×10-4 |
Roughness of surface |
|
μm |
0.3~0.8 |
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