TFO-R-SI

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TFO-R-SI is an electrically insulating thermally conductive silicone foil for an optimised thermal coupling between electronic packages and heat sinks. Through the specific formulation and filling with thermally conductive ceramic particles a very high thermal conductivity is reached. Under pressure the total thermal resistance is minimised. The fibreglass reinforcement provides for an outstanding mechanic stability and cutthrough resistance as well as easy handling. For an easy and reliable preassembly the interface material is available with low tack pressure sensitive adhesive on one side.



PROPERTIES

  • Thermal conductivity: 3.5 W/mK
  • High thermal contact
  • Outstanding mechanic stability through fibreglass reinforcement
  • Extraordinary chemical resistance and longterm stability
  • Residue-free removal after use

AVAILABILITY

  • Sheet 300 x 280 mm
  • Non tacky
    (TFO-RXXX-SI)
  • Tacky on one side
    (TFO-RXXX-SI-A1)
  • Die cut parts
  • Kiss cut parts on sheet

APPLICATION EXAMPLES

Thermal link of:

  • MOSFETs or IGBTs
  • Power diodes or AC/DC converters
  • Power modules

For use in Switch mode power supplies / Motor control units / Automotive engine management systems / UPS units / Solar systems / Automotive pre-heaters

OVERVIEW

PropertyUnitTFO-R250-SITFO-R380-SI
MaterialCeramic filled siliconeCeramic filled silicone
ColourWhiteWhite
ReinforcementFibreglassFibreglass
Thicknessmm0,25±0,030,38±0,03
Tensile Strength1kpsi> 2.18> 2.18
Shelf Life (unopened, dry storage conditions @ < 40°C)Months1212
UL FlammabilityUL 94V0V0
RoHS Conformity2015 / 863 / EUYesYes
Thermal
Resistances2 @ 150 PSI°C-inch²/W0.160.26
Resistance2 @ 30 PSI°C-inch²/W0.410.55
Thermal ConductivityW/mK3.53.5
Operating Temperature Range°C- 40 to + 150 - 40 to + 150
Electric
Breakdown Voltage3kV AC3.04.0
Volume ResistivityOhm - cm1 x 10141 x 1014
Dielectric Constant@ 1 MHz2.42.4