Tflex
TM
HR400 Series
Innovative
Technology
for a
Connected
World
Thermal Gap Filler
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 -50ºC thru 160ºC, and meets UL 94V0
flame rating.
FEATURES AND BENEFITS
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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
APPLICATIONS
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Cooling components to chassis, frame, or other mating components
Memory Modules
Home and small office network equipment
Mass storage devices
Automotive electronics
Telecommunication hardware
Radios
LED solid state lighting
Power electronics
LCD and PDP flat panel TV
Set top boxes
Audio and video components
IT infrastructure
GPS navigation and other portable devices
global
solutions:
local
support
Americas: +1.800.843.4556
Europe: +49.8031.2460.0
Asia: +86.755.2714.1166
CLV-customerservice@lairdtech.com
www.lairdtech.com/thermal
TM
Tflex
TM
HR400 Series
Thermal Gap Filler
Innovative
Technology
for a
Connected
World
Tflex
TM
HR400 TYPICAL PROPERTIES
Tflex HR400
TM
TEST METHOD
Construction
Color
Thermal Conductivity
Hardness (Shore 00)
Specific Gravity
Thickness Range
Thickness Tolerance
UL Flammability Rating
Temperature Range
Outgassing TML
Outgassing CVCM
Coefficient Thermal
Expansion (CTE)
Ceramic filled
silicone elastomer
Dark Grey
1.8 W/mK
60
1.93
0.020" - .400"
(0.5 - 10.2mm)
±10%
94 V0
-50ºC to 160ºC
0.32%
0.09%
651 ppm/ºC
35ºC-108ºC
NA
Visual
Hot Disk™
ASTM D2240
Helium
Pyncometer
File E180840
See reliability
report
ASTM E595
ASTM E595
IPC-TM-650
2.4.24
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 “-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.
THR-DS-Tflex-HR400 1109
Any information furnished by Laird Technologies and its agents is believed to be accurate and reliable. Responsibility for the use and application of Laird Technologies
materials rests with the end user since Laird Technologies and its agents cannot be aware of all potential uses. Laird Technologies makes no warranties as to the fitness,
merchantability, or suitability 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 domestic terms and conditions of sale in effect from time to
time, a copy of which will be furnished upon request.damages of any kind. All Laird Technologies’ products are sold pursuant to the Laird Technologies’ domestic terms and
conditions of sale in effect from time to time, a copy of which will be furnished upon request. Document A15958-00 Rev B, 11/2009.
© 2009 All Rights Reserved. Laird Technologies is a registered trademark of Laird Technologies, Inc.
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