|
Property |
Al2O3
100% |
Al2O3
96% |
AlN |
|
Thermal conductivity, W/(m
x
K) |
30 |
24 |
>170 |
|
Thermal expansion, 106K-1 |
7.2 |
7.0 |
4.8 |
|
Electrical resistivity, Ohm
x
cm |
>1014 |
>1014 |
>1014 |
Standard TE module
types are produced using one of the following ceramics:
 |
Alumina Al2O3
100%. |
|
Alumina Al2O3
96%. |
|
Aluminum
Nitride AlN 100%. |
The Alumina (100%
or 96%) is default for most of standard TE modules (MC, MD, MP, MX
series). The AlN is used for ML Series and optional TEC types manufacturing.
Standard ceramics surface finish:
|
Lapped/Grinded
Ceramics Ra<0.6 mm |
|
Polished
Ceramics Ra<0.1 mm (on request) |
|
