Products

Keratherm Softtherm®: Highest Thermal Conductivity

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 (Click for full-size)

Compressibilities of Softtherm 86/300
Compressibilities of Softtherm 86/500

Properties

Keratherm Softtherm®: Highest Thermal Conductivity
Property Symbol Unit 86/300 86/500 86/600
Color     blue brown gray
Thermal Properties
Thermal Resistance Rth K/W 0.41 0.25 0.20
Thermal Impedance Rti °Cmm²/W
Kin²/W		 166
0.25		 100
0.15		 80
0.12
Thermal Conductivity λ W/mK 3.0 5.0 6.0
Electrical Properties
Breakdown Voltage Ud;ac kV 8.0 1.0 1.5
Volume Resistivity   Ωcm 1.0x1011 1.0x1011 1.7x1011
Dielectric Loss Factor tan δ 1 5.0x10-3 1.5x10-3 2.0x10-3
Dielectric Constant εr 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 -60 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;