Technical Data | March 2016
3M
™
Thermally Conductive Acrylic Interface Pad 5571
Product Description
3M
™
Thermally Conductive Acrylic Interface Pad 5571 is designed to provide a preferential heat transfer path between
heat generating components like integrated circuits and heat spreaders (e.g. aluminum heat sink). 3M pad 5571 consists
of a highly conformable, slightly tacky acrylic elastomeric sheet filled with conductive ceramic particles which provide
features listed as follows:
Key Features
• High thermal conductivity, 2.0W/m-K on plane direction
• Good softness and conformability even to non-flat IC surfaces and heat spreading blocks
• Passes UL 94 V-0 flame retardance test
• No siloxane outgassing or oil bleeding
• Soft compliant material allows for pressure relaxation, preventing high pressure zones on components
• Good electrical insulation properties
• Slight tack allows easy pre-assembly
• Good wetting performance for better thermal conductivity
Product Construction/Material Description
Note:
The following technical information and data should be considered representative or typical only and should not
be used for specification purposes.
3M
™
Thermally Conductive Acrylic Interface Pad 5571
Property
Color
Base Resin
Pad Thickness
Primary Filler Type
Product Liner
Roll Length
Value
Yellowish White
Acrylic
0.75 mm/1.0 mm/1.5 mm/2.0 mm
Ceramic
PET Film
Standard: 33 m — Custom size can be supplied by user requests.
1
3M
™
Thermally Conductive Acrylic Interface Pad 5571
Applications
• IC packaging heat conduction
• Heat sink interface
• COF chip heat conduction
• LED board TIM
• HD TV address IC chip and scan module board
• General gap filling in electronic device
• Mechanical fastening such as clamp, bracket, and screw can be used in parallel with this thermal conductive tape
Application Technique
• To obtain optimum thermal conductivity, good surfaces for wet out are required. For better contact, clean, dry
and well unified surface conditions are recommended. Typical surface cleaning solvents are isopropyl alcohol
and water (rubbing alcohol) or heptane.
Note:
Be sure to follow manufacturer’s safety precautions and directions for use when using solvents.
• Ideal application temperature range is from 0°C to 40°C. Initial application to surfaces at temperatures below
10°C is not recommended because the pad becomes too firm to be wet out readily. However, once properly
applied, low temperature holding is generally satisfactory.
Typical Physical Properties and Performance Characteristics
Note:
The following technical information and data should be considered representative or typical only and should
not be used for specification purposes. Final product specifications and testing methods will be outlined in
the products Certificate of Analysis (COA) that is provided once the product is approved by 3M for general
commercialization and development work is completed.
3M
™
Thermally Conductive Acrylic Interface Pad 5571
Property
Thickness (mm)
Thermal conductivity (W/mK)
Hardness (Shore 00)
Density (grams/cm
3
)
Flammability
Dielectric Strength (kV/mm)
Volume Resistivity (Ω-cm)
a
Method
a
–
ASTM C1113
TS-KOR-217
TS-TM-44
UL94
ASTM D149
JIS K6249
0.75T
0.75
1.0T
1.0
2.0
70
1.85
V-0
13
3.3 x 10
12
1.5T
1.5
2.0T
2.0
Methods listed as ASTM are tested in accordance with the ASTM method noted
2
Volume Resistivity (Ω-cm)
a
b
JIS K6249
3.3 x 10
12
Methods listed as ASTM are tested in accordance with the ASTM method noted
Thermal Conductivity Test Methods:
3M
™
• 2.0W/m-K in
Conductive Acrylic Interface Pad 5571
Thermally
XY direction per Hot wire plane Test method (Test equipment: QTM-500)
• 2.0W/m-K in Z direction tested in accordance with a simplified ASTM D5470 type method (Test equipment: Tester DynTIM)
Compression vs.
Compression vs. Stress
Stress
Compression [%]
80
60
40
20
0
0
2
4
6
Stress [kg/cm
2
)
8
10
12
• Sample size: 1.0T,
by
by 30mm
Sample size: 1.0T, 30
30
30mm
Test speed: 0.5mm/min
• Test speed: 0.5mm/min
Heat Resistance
1, 2
Heat Resistance
Duration (hrs)
Thermal Conductivity (W/mK)
Hardness (Shore 00)
Appearance
1
Duration (hrs)
Initial
2.0
69
–
Initial
2.0
69
–
1000
2.0
70
1000
2.0
70
2000
2.0
70
2000
2.0
70
5000
2.0
70
5000
2.0
70
Thermal Conductivity (W/mK)
Hardness (Shore 00)
Appearance
No effect
Aged by dwelling at 110°C high temperature chamber.
2
The end
The
customer
customer application, design & verification testing will determine the final in use effective temperature range based
*Note:
use
end use
application, design and verification testing will determine the final in-use effective temperature range based on each
application’s environmental conditions.
No effect
No effect
No effect
No effect
No effect
on each application’s environmental conditions.
(2)
Certificate of Analysis (COA)
The 3M Certificate of Analysis (COA) for this product is established when the product becomes commercially available
from 3M. The Technical Data Sheet (TDS) technical information, test methods and data should be considered represen-
tative or typical only and should not be used for specification purposes. The Technical Data Sheet (TDS) information is
based on a limited set of test results and do not reflect the COA specification limits. Final product specifications and
associated manufacturing facility testing methods used for the commercialized product are outlined in the products
Certificate of Analysis (COA) that is provided upon request or with the products shipment.
The COA contains the 3M specifications and test methods for the products performance limits that the product will be
supplied against. The 3M product is supplied to 3M COA test specifications and the COA test methods. Contact your
local 3M Technical Service representative for the COA for this product.
Storage and Shelf Life
The shelf life of 3M
™
Thermally Conductive Acrylic Interface Pad 5571 is 12 months from the date of manufacture when
stored in the original packaging materials and stored at 21°C (70°F) and 50% relative humidity.
3
Regulatory:
For regulatory information about this product, contact your 3M representative.
Technical Information:
The technical information, recommendations and other statements contained in this document are based upon tests or
experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed.
Product Use:
Many factors beyond 3M’s control and uniquely within user’s knowledge and control can affect the use and performance of a 3M
product in a particular application. Given the variety of factors that can affect the use and performance of a 3M product, user is solely responsible
for evaluating the 3M product and determining whether it is fit for a particular purpose and suitable for user’s method of application.
Warranty, Limited Remedy, and Disclaimer:
Unless an additional warranty is specifically stated on the applicable 3M product packaging or
product literature, 3M warrants that each 3M product meets the applicable 3M product specification at the time 3M ships the product.
3M MAKES
NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR
CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY OR CONDITION ARISING OUT
OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE.
If the 3M product does not conform to this warranty, then the sole and exclusive
remedy is, at 3M’s option, replacement of the 3M product or refund of the purchase price.
Limitation of Liability:
Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product, whether direct,
indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability.
Electronics Materials Solutions Division
3M Center, Building 224-3N-11
St. Paul, MN 55144-1000
Phone
Fax
Web
1-800-251-8634
651-778-4244
www.3M.com/electronics
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