Tflex HR400 Series
Thermal Gap Filler
PRODUCT DESCRIPTION
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 HR400s
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.
FEATURES AND BENEFITS
Thermal Conductivity 1.8 W/mK
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
SPECIFICATIONS
TYPICAL PROPERTIES VALUE TEST METHOD
Construction & Composition Ceramic filled silicone sheet N/A
Color Dark Grey Visual
Thickness Range 0.50mm (.020) 8.9mm N/A
(0.350)
Thickness Tolerance +/- 10% N/A
Thermal Conductivity (W/mK) 1.8 ASTM D5470
Density (g/cc) 1.93 Helium Pycnometer
Hardness (Shore 00) 53 ASTM D2240
Outgassing TML (weight %) 0.32 ASTM E595
Outgassing CVCM (weight %) 0.09 ASTM E595
Temperature Range -50C to 160C Laird Test Method
Rth@ 40 mils, 10 psi 1.00 Cin2/W ASTM D5470 (Modified)
Dielectric Constant @ 1 MHz 4.81 ASTM D150
UL Flammability Rating V-0 UL 94
13
Volume Resistivity 2 x 10 ohm-cm ASTM D257
Americas: +1.866.928.8181
Europe: +49.(0).8031.2460.0
Asia: +86.755.2714.1166
www.lairdtech.com Tflex HR400 Series
Thermal Gap Filler
AVAILABILITY
STANDARD THICKNESSES
0.5mm (0.020) to 8.9mm (0.350) thick material available in 0.25mm (0.010) increments
Available in standard sheet sizes of 18 x 18 and 9 x 9 or custom die cut parts
OPTIONS
DC1 proprietary tack eliminating coating
Fiberglass is an option in the 0.020-inch and 0.030-inch thicknesses to aid in handling and is designated by the suffix -FG
PART NUMBER SYSTEM
Tflex indicates Laird elastomeric thermal gap filler product line. HR4xxx indicates Tflex HR400 product line with thickness in mils (0.001)
EXAMPLES:
Tflex HR440 = 0.040 thick Tflex HR400 material
Tflex HR4100,DC1 = 0.10 thick Tflex HR400 material with DC1 coating
Tflex HR400 DS 121317
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user. Laird Technologies makes no warranties as to the fitness, merchantability, suitability or non- infringement of any Laird Technologies materials or products for any specific or general uses. Laird Technologies shall not be liable for incidental or
consequential damages of any kind. All Laird Technologies products are sold pursuant to the Laird Technologies Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request. Copyright 2013 Laird Technologies,
Inc. All Rights Reserved. Laird, Laird Technologies, the Laird Technologies Logo, and other marks are trademarks or registered trademarks of Laird Technologies, Inc. or an affiliate company thereof. Other product or service names may be the property of third
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