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Standard Films
Keratherm Green
 
Description
Keratherm Green is a silicone elastomer films filled with aluminum oxide which is characterized by its excellent electrical characteristics. It exhibits good thermal behaviour. Optional fiberglass reinforcement leads to very good mechanical properties. These film types posess excellent mechanical stability along with good perforation strength. Because of its structure, Keratherm Green has very good self-adhesive properties. Adhesive coatings are optionally available.
Applications
automotive
telecommunication units
DC-DC converters
high voltage units
 
Standard Films: Keratherm Green
Property 
Symbol
Unit
86/37
86/47
86/17
86/27
Color  
green
green
green
green
Thermal Properties
Thermal Resistance
Rth
K/W
0.48
0.56
0.59
0.61
Thermal Impedance
Rti
°Cmm²/W
Kin²/W
125
0.19
132
0.20
148
0.23
173
0.26
Thermal Conductivity 
l
W/mK
1.8
1.7
1.5
1.3
Electrical Properties
Breakdown Voltage
Ud;ac
kV
8.0
8.0
6.0
6.0
Dielectric Breakdown
Ed;ac
kV/mm
26.0
26.0
26.0
26.0
Volume Resistivity  
Wcm
2.5x1011
1x1011
1x1011
1x1011
Dielectric Loss Factor
tan d
1
6.0x10-3
6.0x10-3
6.0x10-3
6.0x10-3
Dielectric Constant
er
1
2.9
2.9
2.9
2.9
Mechanical Properties
Overall Thickness 
(±10%)
mm
0.225
0.250
0.225
0.250
Hardness  
Shore A
69
69
72
71
Tensile Strength  
N/mm²
3.0
3.0
15
15
Elongation  
%
75
75
3.4
3.4
Physical Properties
Application Temperature  
°C
-60 to +250 
-60 to +250 
-60 to +250 
-60 to +250 
Density
r
g/cm³
2.4
2.2
2.3
2.2
Flame Class  
UL
94V-0
94V-0
94V-0
94V-0
with Adhesive Coating  
 
-
yes
-
yes
Reinforced with Fiberglass  
 
-
-
yes
yes
 


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