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Keratherm Softtherm®
Highest Thermal Conductivity
Description
This group of Softtherm films exhibits the best thermal behavior of our available gap-fillers. The group is characterized by its low thermal resistance and best heat dissipation, and good dielectric strength at the same time. The good compressibility and low Shore hardness ensure reliable and simple processability.
Graphs

Compressibilities of Softtherm 86/300

Compressibilities of Softtherm 86/500
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Softtherm®: Highest Thermal Conductivity
Property 
Symbol
Unit
86/300
86/500
86/600 New!
Color  
blue
brown
gray
Thermal Properties
Thermal Resistance *
Rth
K/W
0.41
0.25
0.20
Thermal Impedence
Rti
°Cmm²/W
Kin²/W
166
0.25
100
0.15
80.0
0.12
Thermal Conductivity
l
W/mK
3.0
5.0
6.0
Electrical Properties
Breakdown Voltage
Ud;ac
kV
8.0
1.0
1.5
Volume Resistivity  
Wcm
1 x 1011
1 x 1011
1.7 x 1011
Dielectric Loss Factor
tan d
1
5.0 x 10-3
1.5 x 10-3
2.0 x 10-3
Dielectric Constant
er
1
3.3
3.9
2.5
Mechanical Properties

Available Thickness

(±10%)
mm
0.5 - 5.0
0.5 - 2.0
0.5, 1.0, 1.5
Hardness  
Shore 00
65
75
60 - 70
Youngs Modulus*  
N/cm²
220
634
692
Physical Properties
Application Temperature  
°C
-60 to +200
-40 to +200
-60 to +150
Single-side Adhesive
 
optional
86/300-K
optional
86/500-K
optional
86/600-K
Flame Class  
UL
94V-0
pending
pending
Total Mass Loss
TML
Ma.-%
< 0.35
< 0.24
< 0.40
 
*
- Youngs Modulus sample size 30x30x2.5mm3;
- variable contact pressure;
- compression 50% of measured thickness
;


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