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Keratherm Graphite Film
 
Description

The Keratherm Graphite Films are based onto 100% graphite material. The films are available as uncoated versions or for specific applications, provided with hot-setting wax coatings, filled or standard adhesives.

Because of their high heat conductivity, these films are used, among others, in the CPU field.
See Also: Graphite S 900
high density graphite film
 
Keratherm Graphite Films
Property 
Symbol
Unit
90/10
90/10-S
90/15
90/20
90/25
Color  
black
black
black
black
black
Thermal Properties
Thermal Resistance
Rth
K/W
0.09
0.07
0.07
0.23
0.05
Thermal Impedence
Rti
°Cmm²/W
Kin²/W
36
0.05
36
0.05
29
0.04
55
0.10
21
0.03
Thermal Conductivity
l
W/mK
5.5
5.0
6.0
4.0
7.0
Electrical Properties
Breakdown Voltage
Ud;ac
kV
not insulating
insulating on
wax-side
not insulating
not insulating
not insulating
Volume Resistivity  
Wcm
0.07
-
0.07
0.07
0.05
Mechanical Properties
Overall Thickness
(±10%)
mm
0.200
0.250
0.175
0.250
0.125
Hardness  
Shore A
30
30
30
30
30
Tensile Strength  
N/mm²
5.5
5.5
6.0
5.5
4.0
Elongation  
%
10
-
-
-
10
Physical Properties
Application Temperature  
°C
-40 to +500
-40 to +500
-40 to +500
-40 to +500
-40 to +500
Density
r
g/cm³
1.0
1.0
1.0
1.0
1.1
Flame Class  
UL
94V-0
94V-0
94V-0
94V-0
94V-0
Adhesive Coating  
 
-
PCM-mixture
filled adhesive
yes
-
Shelf Life  
months
-
12
12
12
-
 


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