Stellar Industries
Thermal Management Specialists
Aluminum Nitride Beryllium Oxide Alumina
 
96% Alumina Substrates::
Thermal Conductivity: 24 W/mK
Surface Characteristics Available:
Lapped:
16-22µinches
.0005 inch / inch Camber
+/- 0.0005" Thickness Tolerance
Polished:
1-2 µinches
<0.0005 mils/inch Camber
+/- 0.0005" Thickness Tolerance
Metalization Techniques Available:
Thick Film:
Gold, Platinum Gold
Silver, Pladium Silver,
Dielectric
Resistors less than 100 ohms/square
Thin Film:

Ti/Pt/Au
TiW/Au
Cr/Ni/Au
TaN/TiW/Au
NiCr/Ni/Au
Copper Plate-up

Refractory:
Molybdenum or Tungsten with Ni/Au Plating
Thermal Conductivity
(W/mk)
24
Coefficient of Thermal Expansion (ppm/c)
8.2
Density (gm/cm3)
3.72
Dielectric Constant
(@1mhz)
9.0
Loss Tangent (@1mhz)
0.0002
 
99.5% Alumina Substrates::
Thermal Conductivity: 35 W/mK
Surface Characteristics Available:
Lapped:
10-15 µinches
.0005 inch / inch Camber
+/- 0.0005" Thickness Tolerance
Polished:
1-2 µinches
<0.0005 mils/inch Camber
+/- 0.0005" Thickness Tolerance
Metalization Techniques Available:
Thick Film:
Gold, Platinum Gold
Silver, Pladium Silver,
Dielectric
Resistors less than 100 ohms/square
Thin Film:

Ti/Pt/Au
TiW/Au
Cr/Ni/Au
TaN/TiW/Au
NiCr/Ni/Au
Copper Plate-up

Refractory:
Molybdenum or Tungsten with Ni/Au Plating
Thermal Conductivity
(W/mk)
35
Coefficient of Thermal Expansion (ppm/c)
8.4
Density (gm/cm3)
3.89
Dielectric Constant
(@1mhz)
9.8
Loss Tangent (@1mhz)
0.0002
 
99.6% Alumina Substrates::
Thermal Conductivity: 27 W/mK
Surface Characteristics Available:
Lapped:
10-15 µinches
.0005 inch / inch Camber
+/- 0.0005" Thickness Tolerance
Polished:
1-2 µinches
<0.0005 mils/inch Camber
+/- 0.0005" Thickness Tolerance
Metalization Techniques Available:
Thick Film:
Gold, Platinum Gold
Silver, Pladium Silver,
Dielectric
Resistors less than 100 ohms/square
Thin Film:

Ti/Pt/Au
TiW/Au
Cr/Ni/Au
TaN/TiW/Au
NiCr/Ni/Au
Copper Plate-up

Refractory:
Molybdenum or Tungsten with Ni/Au Plating
Thermal Conductivity
(W/mk)
27
Coefficient of Thermal Expansion (ppm/c)
7.0 - 8.3
Density (gm/cm3)
3.87
Dielectric Constant
(@1mhz)
9.9
Loss Tangent (@1mhz)
0.0004
 
 
 
 
Stellar Industries Corp. 50 Howe Avenue Millbury, MA 01527 | 508.865.1668 | sales@stellarind.com