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Tflex HR400

Silicone based Thermal Gap Filler

Product Description

MID-PERFORMANCE GAP FILLER WITH 1.8 W/MK Tflex HR400 is a cost-effective and compliant gap filler thermal interface material with excellent thermal performance and great handling for mass-production applications. The low modulus interface pad conforms to component topography resulting in little stress on the components mating chassis or parts. The softness relieves mechanical stress from high stack-up tolerance and absorbs shock resulting in improved device reliability. Tflex HR400's recovery properties for applications requiring material rework result in continued mechanical integrity even after device rework and re-assembly. Tflex HR400 is naturally tacky on both sides and requires no additional adhesive coating to inhibit thermal performance. The tack is designed to hold the pad in place during assembly and component transport. Tflex HR400 is electrically insulating stable from -50?C thru 160?C and meets UL 94V0 flame rating. STANDARD THICKNESSES Standard thickness is 0.020-inch (0.5 mm) through 0.400-inch (10.2 mm) and available in 0.010-inch increments. Please contact Laird Technologies for availability of thicknesses above 0.200-inch. OPTIONS Fiberglass is standard in 0.020-inch and 0.030-inch thicknesses to aid in handling and is designated by the suffix œ-FG. Material is standard with both sides tacky; the -DC1 suffix indicates only one side is tacky. MATERIAL NAME AND THICKNESS Tflex indicates Laird Technologies elastomeric thermal gap filler product line. HR4XXX indicates Tflex HR400 product line with thickness in mils (0.001-inches); -DC1 indicates only one side tacky; -FG indicates fiberglass reinforcement. Data for design engineer guidance only. Observed performance varies in application. Engineers are reminded to test the material in application.

Features and Benefits
  • Soft and Compliant
  • Available in thicknesses from 0.020' thru 0.400' (0.5mm thru 10.2mm)
  • Naturally tacky for adhesion during assembly and transport
  • Environmentally friendly solution that meets regulatory requirements including RoHS and REACH


Automated PackagingAutomated Pad Placement
Custom AutomationCustom Product Development

Automotive ADASAutomotive Electronics
Automotive InfotainmentAutomotive Powertrain/ECUs
Drones/SatellitesGaming Systems
InstrumentationNotebooks/Tablets/Portable Devices
RoutersSmart Home Devices
Wireless infrastructure

Technical Specification

ColorDark Grey
Density (g/cc)1.90
Dielectric Constant4.80
Hardness (Shore 00)53
Operating Temperature Max (Celsius)160
Operating Temperature Min (Celsius)-50
Outgassing CVCM (%)0.090
Outgassing TML (%)0.320
Shelf Life2 years from Date of Shipment
Thermal Conductivity (W/mK)1.80
Thermal Resistance @10 psi Max (C-in2/W)4.080
Thermal Resistance @10 psi Min (C-in2/W)0.492
Thickness Max (inches)0.300
Thickness Max (mm)7.62
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
A15959-02Tflex HR420 9.00x9.00IN,1.800.0200.5153160-504.80Dark Grey
A15959-04Tflex HR440 9.00x9.00IN,1.800.0401.0253160-504.80Dark Grey
A15959-06Tflex HR460 9.00x9.00IN,1.800.0601.5253160-504.80Dark Grey
A15959-08Tflex HR480 9.00x9.00IN,1.800.0802.0353160-504.80Dark Grey
A15959-10Tflex HR4100 9.00x9.00IN,1.800.1002.5453160-504.80Dark Grey
A15959-12Tflex HR4120 9.00x9.00IN,1.800.1203.0553160-504.80Dark Grey
A15959-14Tflex HR4140 9.00x9.00IN,1.800.1403.5653160-504.80Dark Grey
A15959-16Tflex HR4160 9.00x9.00IN,1.800.1604.0653160-504.80Dark Grey
A15959-18Tflex HR4180 9.00x9.00IN,1.800.1804.5753160-504.80Dark Grey
A15959-20Tflex HR4200 9.00x9.00IN,1.800.2005.0853160-504.80Dark Grey
A15959-30Tflex HR4300 9.00x9.00IN,1.800.3007.6253160-504.80Dark Grey
A16162-02Tflex HR420 18.000x18.000in,1.800.0200.5153160-504.80Dark Grey
A16162-04Tflex HR440 18.000x18.000IN,1.800.0401.0253160-504.80Dark Grey
A16162-06Tflex HR460 18.000x18.000IN,1.800.0601.5253160-504.80Dark Grey
A16162-08Tflex HR480 18.000x18.000IN,1.800.0802.0353160-504.80Dark Grey

Company Address

Techni3 Ltd

Unit 4B Caerphilly Business Park


CF83 3GS

+44 (0)29 2125 2100

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