Substrates

 

 

Ceramic Core Aluminum Nitride (AlN)

Ceramic Core Alumina(AlO)

Ceramic Core Beryllium Oxide

(BeO)

Glass Ceramic

Borosilicate

Quartz

Mullite

Temperature Maximum

°C

°F

450° C

842° F

450° C

842° F

500° C

842° F

400° C

752° F

400° C

752° F

400° C

752° F

450° C

842° F

Watt Density
Maximum

W/cm2

W/in2

155 W/cm2

1000 W/in2

54 W/cm2

350 W/in2

155 W/cm2

1000 W/in2

54 W/cm2

350 W/in2

54 W/cm2

350 W/in2

54 W/cm2

350 W/in2

77.5 W/cm2

500 W/in2

Thermal
Conductivity

W/mK

140-180 W/mK

25-35 W/mK

250 W/mK

1.5-1.7 W/mK

1.2 W/mK

1.38-1.84 W/mK

6 W/mK

Ramp Up Rate

°C/sec

°F/sec

300 °C/sec

572 °F/sec

100 °C/sec

212 °F/sec

300 °C/sec

572 °F/sec

70 °C/sec

158 °F/sec

50 °C/sec

122 °F/sec

50 °C/sec

122 °F/sec

70 °C/sec

158 °F/sec

Coefficient of Thermal Expansion

 

4.6 x 10-6/°C

6.7 x 10-6/°C

7-8.5 x 10-6/°C

0.8-1.6 x 10-6/°C

3.3 x 10-6/°C

0.55-0.59 x 10-6/°C

5.4 x 10-6/°C

Heat Capacity

J/g-K

.72 J/g-K

.88 J/g-K

1.05 J/g-K

.80-0.85 J/g-K

.80-0.85 J/g-K

.74 J/g-K

.23 J/g-K

Dielectric
Strength

VAC

>5000 VAC

>5000 VAC

>5000 VAC

>5000 VAC

>5000 VAC

>5000 VAC

>5000 VAC

Resistance of Temperature Gradient

°C

 

400°C

 

~340°C

 

~500°C

700°C - 900°C

 

270°C

 

~1000°C

~300°C

 

Dielectric
Constant

 

9

9.8

6.5-7.5

6.3-7.8

~4.6

3.82

5.8

Density

g/cm3

lb/ft3

3.26 g/cm3

203.52 lb/ft3

3.75 g/cm3

237.23 lb/ft3

2.85g/cm3

177.92 lb/ft3

2.5 g/cm3

156.07 lb/ft3

2.23 g/cm3

139.2 lb/ft3

2.2 g/cm3

137.4 lb/ft3

2.8 g/cm3

175 lb/ft3

Substrate
Thickness

mm

in

1.27 mm – 5.08 mm

.05 in - .20 in

.64 mm – 12.70 mm

.025 in - .50 in

1.27 mm – 5.08 mm

.05 in - .20 in

.64 mm – 12.70 mm

.025 in - .50 in

.64 mm – 12.70 mm

.025 in - .50 in

.64 mm – 12.70 mm

.025 in - .50 in

.64 mm – 12.70 mm

.025 in - .50 in

Maximum
Dimensions

mm

in

127 mm x 279 mm

5 in x 11 in

152 mm x 605 mm

6 in x 12 in

127 mm x 279 mm

5 in x 11 in

457.2 mm x 762mm

18 in x 30 in

457.2 mm x 762mm

18 in x 30 in

457.2 mm x 762mm

18 in x 30 in

152 mm x 605 mm

6 in x 12 in