Keratherm Gap Fillers - MH&W Thermal Products

Keratherm Softtherm

Keratherm Softtherm gap fillers are filled and highly elastic. Their good compression behavior and good forming capabilities guarantee that rather large component height differences can be compensated for. They are electrically insulating and possess gradual heat conductivity. Depending on the type, the sheets have varying self-adhesive behaviors and some are available with adhesive coatings. Softtherm films should not be compressed beyond 30% of the original thickness, because this may cause the films to bleed out.

  Benefits

  • compensates component size variations
  • optimized thermal transition
  • good compression behavior
  • UL-listed

  Applications

  • RD-RAM memory model
  • heat pipe thermal solutions
  • automotive engines
  • control units
  • plasma supply panels

  Properties

  • highly flexible film
  • good electrical insulation
  • high temperature stability

Film Options

  • single-sided adhesive surface
  • single-sided adhesive coating possible
  • can be supplied in sheets or cut to size format
  • Softtherm 86/125 – 86/200

    86/125: single layer material with fiberglass reinforcement up to 4 mm
    86/200: double layer material

    • 86/125: 1.5 W/mK — 12 kV/mm
    • 86/200: 1.0 W/mK — 16 kV/mm

    Softtherm 86/225 – 86-228

    86/225: single layer material with fiberglass reinforcement up to 4 mm
    86/228: double layer material

    • 86/225: 2.0 W/mK — 12 kV/mm
    • 86/228: 2.0 W/mK — 12 kV/mm

    Softtherm 86/235 – 86/238

    86/235: single layer material with fiberglass reinforcement up to 2 mm
    86/238: double layer material

    • 86/235: 2.0 W/mK — 12 kV/mm
    • 86/238: 2.0 W/mK — 12 kV/mm

    Softtherm 86/300 – 86/320

    86/300: single layer material with fiberglass reinforcement up to 1 mm
    86/320: single layer material with fiberglass reinforcement up to 1.5 mm

    • 86/300: 3.0 W/mK — 14 kV/mm
    • 86/320: 2.5 w/mK — 10 kV/mm

    Softtherm 86/300 – 86/325

    86/300: single layer material with fiberglass reinforcement up to 1 mm
    86/325: single layer material with fiberglass reinforcement up to 1 mm

    • 86/300: 3.0 W/mK — 14 kV/mm
    • 86/325: 3.0 W/mK — 12 kV/mm

    Softtherm 86/450 – 86/500

    86/450: single layer material
    86/500: single layer material

    • 86/450: 4.5 W/mK — 10 kV/mm
    • 86/500: 5.0 W/mK — 2 kV/mm

    Softtherm 86/525 – 86/600

    86/525: single layer material
    86/600: single layer material

    • 86/525: 5.5 W/mK — 2.5 kV/mm
    • 86/600: 6.0 W/mK — 3.0 kV/mm

    Softtherm U281 Silicone Free

    U281: single layer material – silicone free

    • U281: 2.0 W/mK — 14 kV/mm
  • Keratherm Softtherm

    Film thermal conductivity thermal resistance breakdown voltage measured thickness hardness characteristics
    W/mK K/W kV mm Shore 00
    86/125 Softtherm 1.5 0.8 6.0 0.5 10 – 25 extra soft
    86/200 Softtherm 1.0 1.2 8.0 0.5 10 – 20 high elastic
    86/225 Softtherm 2.0 0.6 6.0 0.5 30 – 45 high elastic
    86/228 Softtherm 2.0 0.6 6.0 0.5 30 – 45 high elastic
    86/235 Softtherm 2.0 0.6 6.0 0.5 25 – 40 low bleeding
    86/238 Softtherm 2.0 0.6 6.0 0.5 25 – 40 low bleeding
    86/300 Softtherm 3.0 0.41 7.0 0.5 60 – 75 good compressibiity
    86/320 Softtherm 2.5 0.5 5.0 0.5 25 – 38 high elastic
    86/325 Softtherm 3.0 0.41 6.0 0.5 35 – 50 good compressibility
    86/450 Softtherm 4.5 0.27 5.0 0.5 65 – 75 great performance
    86/500 Softtherm 5.0 0.25 1.0 0.5 65 – 75 great performance
    86/525 Softtherm 5.5 0.22 1.25 0.5 50 – 65 great performance
    86/600 Softtherm 6.0 0.2 1.5 0.5 60 – 75 great performance
    U281 Softtherm Silicone Free 2.0 <0.6 7.0 0.5 55 – 65 silicone free