Increase design possibilities with transparent PCB in 99% Aluminum Oxide. Not only will it open up a wide range of optical design features, yet thanks to the favorable material properties of Alumina, our transparent printed circuit boards are also highly thermally conductive (26-28 W/mK). At the same time is it still an electrical insulator. This characteristics make it perfect for applications using power LED and where added premium design effects are needed.
Material properties Al2O3 99%
AluminaOxide or Al2O3 99% is a specialty ceramic substrate with excellent optical, thermal and electrical properties. Below you can find a full overview of both materials properties.
|Property||ITEMS||Unit||Al2O3 - 99%|
|Material - Alumina%||%||99.5%|
|Electrical||Dielectric Constant (1MHz)||-||9.8|
|Dielectric strength||MV/m or KV/mm||>16.9|
|Mechanical||Density after Sintering (Bulk density)||g/cm3||3.89|
|Flexural Strength (3 point)||MPA||379|
|Thermal||Coefficient of Thermal Expansion (CTE)||ppm/°C||8.4|
|Thermal Conductivity (25°C)||W/m‧K||26-28|
The data shown is typical of commercially available material and is only offered for comparative purposes. The information shall not to be interpreted as absolute material properties nor does it constitute a representation or warranty for which we assume legal liability. User shall determine suitability of the material for the intended use and assumes all risk and liability whatsoever in connection therewith.
Transparent PCB are processed similar as our other Ceramic PCB of which you can download our complete design rules here. In case you have different or more stringent requests, please contact us.
note: Find our technical capabilities on Ceramic PCB here,
|Substrate Material||AluminaOxide - Al2O3 (96% or 99%)||AluminaNitride - AlN|
|Category||Thickfilm, DBC/DPC||Thickfilm, DBC/DPC|
|Conductor material||Silver (Ag)/PdAg/Cu||Silver (Ag)/PdAg/Cu|
|Masking||Transparent glass coating, Black glass coating, High Reflective Coating or solder mask (green, black, white)||Transparent glass coating, Black glass coating, High Reflective Coating, solder mask (green, black, white)|
|Finish||HASL, Silver, NiAu (Gold plating)||HASL, Silver, NiAu (Gold plating)|
|Max # Layers||5||2|
|Panel Size||120mmx120mm standard|
(Max 180mmx180mm possible)
|Panel size tolerance||±50um||±50um|
|Thickness per layer||0.1, 0.25, 0.38, 0.5, 0.635, 0.8 or 1.0mm||0.25, 0.36 or 0.5mm|