Products

Keratherm Softtherm®: 86/250 and 86/255

This group of Softtherm was created as a result of intensive collaboration with our customers. They are characterized by their high thermal conductivity within the gap-fillers and by their varying levels of hardness of the materials.

Possible Thickness: 0.5mm - 5.0mm

Graphs (Click for full-size)

Compressibilities of Softtherm 86/255
Compressibilities of Softtherm 86/250

Applications

  • RD-RAM memory modules
  • Heat pipe thermal solutions
  • Automotive Engine
  • Control units
  • Plasma supply console

Properties

Keratherm Softtherm®: 86/250 and 86/255
Property Symbol Unit 86/250 86/255
Color     white/red white/red
Thermal Properties
Thermal Resistance Rth K/W 0.95 0.85
Thermal Impedance Rti °Cmm²/W
Kin²/W		 385
0.60		 250
0.39
Thermal Conductivity λ W/mK 1.3 2.0
Electrical Properties
Breakdown Voltage Ud;ac kV 8.0 10.0
Dielectric Breakdown Ed;ac kV/mm 16 20
Volume Resistivity   Ωcm 1.0x1011 1.0x1011
Dielectric Loss Factor tan δ 1 2.5x10-3 2.5x10-3
Dielectric Constant εr 1 3.8 3.8
Mechanical Properties
Measured Thickness (±10%) mm 0.5 0.5
Hardness   Shore 00 45 - 55 30 - 40
Youngs Modulus*   N/cm² 15 30
Physical Properties
Density ρ g/cm³ 1.76 1.8
Application Temperature   °C -60 to +200 -60 to +180
Flame Class   UL - 94V-1
Total Mass Loss TML Ma.-% < 0.42 < 0.44
* - Youngs Modulus sample size 30x30x2.5mm3;
   - variable contact pressure;
   - compression 50% of measured thickness;