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TFlex 600

Silicone based Thermal Gap Filler

Product Description

EXCEPTIONALLY SOFT, HIGHLY COMPLIANT GAP FILLER 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. STANDARD THICKNESSES 0.020 to 0.200-inch (0.5 to 5.0mm) 0.020 to 0.200-inch thick material available in 0.010-inch (0.25mm) increments Inquire about availability of material and options above 0.200-inches STANDARD SHEET SIZES 9 x 9 inch (229 x 229mm). 18 x 18 inch (457 x 457mm). 9 x 9 inch only over 0.100 inch thickness. TflexTM 600 can be die cut to individual shapes. Pressure sensitive adhesive is not applicable for TflexTM 600 products. 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). REINFORCEMENT 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
  • Available in thicknesses from 0.020” - 0.200” (0.5mm - 5.0mm)
  • Naturally tacky, needs no further adhesive coating


Automated PackagingAutomated Pad Placement
Custom AutomationCustom Product Development

Automotive ElectronicsAutomotive Powertrain/ECUs
Gaming SystemsInstrumentation
Smart Home DevicesWireless infrastructure

Technical Specification

Density (g/cc)1.30
Dielectric Constant3.30
Hardness (Shore 00)51
Operating Temperature Max (Celsius)200
Operating Temperature Min (Celsius)-45
Outgassing CVCM (%)0.050
Outgassing TML (%)0.130
Shelf Life2 years from Date of Shipment
Thermal 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
Thickness Max (inches)0.200
Thickness Max (mm)5.08
Thickness Min (inches)0.020
Thickness Min (mm)0.51
UL Flammability RatingV-0
Volume Resistivity2.00 x10^13 Ohm-cm
Parts (15)
↑ click on headings to sort ↓
Part NumberPart NameThermal Conductivity (W/mK)Thickness(inches)Thickness (mm)Hardness (Shore 00)Operating Temperature Max (Celsius)Operating Temperature Min (Celsius)Dielectric ConstantColor
A12616-01Tflex 620FG 9x9in3.000.0200.5151200-453.30Blue-Violet
A12616-08Tflex 620FG 18x18in3.000.0200.5151200-453.30Blue-Violet
A12618-01Tflex 640 9x9in3.000.0401.0251200-453.30Blue-Violet
A12618-33Tflex 640 18x18in3.000.0401.0251200-453.30Blue-Violet
A12620-01Tflex 660 9x9in3.000.0601.5251200-453.30Blue-Violet
A12620-15Tflex 660 18x18in3.000.0601.5251200-453.30Blue-Violet
A12622-01Tflex 680 9x9in3.000.0802.0351200-453.30Blue-Violet
A12622-13Tflex 680 18x18in,3.000.0802.0351200-453.30Blue-Violet
A12624-01Tflex 6100 9x9in3.000.1002.5451200-453.30Blue-Violet
A12624-03Tflex 6100 18x18in3.000.1002.5451200-453.30Blue-Violet
A12626-03Tflex 6120 9x9in3.000.1203.0551200-453.30Blue-Violet
A12628-01Tflex 6140 9x9in3.000.1403.5651200-453.30Blue-Violet
A12630-01Tflex 6160 9x9in3.000.1604.0651200-453.30Blue-Violet
A12632-04Tflex 6180 9x9in3.000.1804.5751200-453.30Blue-Violet
A12634-01Tflex 6200 9x9in3.000.2005.0851200-453.30Blue-Violet

Company Address

Techni3 Ltd

Unit 4B Caerphilly Business Park


CF83 3GS

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