Tflex™ 600

Tflex™ 600

Silicone based Thermal Gap Filler

Product Description


Tflex 600 is an exceptionally soft, highly compliant gap filling interface pad with a thermal conductivity of 3 W/mK. These outstanding properties are the result of a proprietary boron nitride filler in the composition.

The high conductivity, in combination with extreme softness produces incredibly low thermal resistances.

Tflex 600 is naturally tacky and requires no additional adhesive coating that can inhibit thermal performance. Tflex 600 is stable from -45°C to 200°C and meets UL 94 V0 rating.TACKY ONE SIDE ONLY

Tflex 600 is naturally tacky on both sides. Tflex 600 can be provided tacky on one side only. This is indicated by the suffix DC. This option offers good separation properties allowing the tacky side to stick to the heatsink/chasis/cold plate/etc. and the other dry side to release easily from the component(s).


Fiberglass is required in 0.020 inch (0.51mm) and 0.030 inch (0.76mm). Thicknesses of 0.040 inch (1.02mm) and above do not require reinforcement. Data for design engineer guidance only. Observed performance varies in application. Engineers are reminded to test the material in application.

Features and Benefits

  • Very high compliancy for low stress applications
  • Low dielectric constant
  • Naturally tacky, needs no further adhesive coating


Automated PackagingAutomated Pad PlacementCustom AutomationCustom Product DevelopmentModelingPrototypingServiceTelecom/DatacomTesting


Last Updated: 07/06/23

Technical Specification

Typical PropertiesColorBlue-Violet
Density (g/cc)1.30
Operating Temperature Max (Celsius)200
Operating Temperature Min (Celsius)-45
Outgassing CVCM (%)0.210
Outgassing TML (%)0.650
Shelf Life2 years from Date of Shipment
Thermal PropertiesThermal Conductivity (W/mK)3.00
Thermal Resistance @10 psi Max (C-in2/W)3.440
Thermal Resistance @10 psi Min (C-in2/W)1.087
Thermal Resistance @30 psi Max (C-in2/W)2.089
Thermal Resistance @30 psi Min (C-in2/W)0.849
Thermal Resistance @50 psi Max (C-in2/W)0.956
Thermal Resistance @50 psi Min (C-in2/W)0.619
Electrical PropertiesDielectric Constant3.30
Volume Resistivity2.00 x10^13 Ohm-cm
Mechanical PropertiesHardness (Shore 00)51
DimensionsThickness Max (inches)0.200
Thickness Max (inches)5.08
Thickness Min (inches)0.020
Thickness Min (mm)0.51
ROHS CompliantYes
UL Flammability RatingV-0


Last Updated: 27/12/21
Last Updated: 22/04/21
Last Updated: 27/12/21
Last Updated: 27/12/21




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