Technical Data | February 2018
3M™ Thermally Conductive Interface Tape 8926 Series
Product Description
3M™ Thermally Conductive Interface Tape 8926 Series has 0.20mm, 0.25mm, and 0.50mm thick pressure
sensitive adhesive tapes filled with thermally conductive ceramic particles. These products are designed to
have good converting ability, handing and re-workability through the introduction of a thin PET carrier. 3M
tape series 8926 is designed with a soft acrylic polymer and multiple thickness options to allow excellent
wet-out or conformability to many surfaces. The tape series has good adhesion performance to many
substrate types and has excellent dielectric performance.
Product Uses
These products can be used for heat management in electronic devices and for general heat dissipation in
devices. They may also be used for bonding/joining parts in electronic products.
Key Features
•
•
•
•
•
Good thermal conductivity (>1.5W/m-K)
Excellent dielectric performance
Low thermal impedance
Good and reliable adhesion performance to Al and SS
Vibration damping
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 Interface Tape 8926 Series
Property
Adhesive type
Tape thickness
Tape color
Filler type
Product liner
Roll length
Value
Soft Acrylic Adhesive
0.20mm / 0.25mm / 0.50mm
Yellowish White
Ceramic Particle
75 um PET Film Liner
Standard: 40m (0.20mm, 0.25mm and 0.50mm)
Custom size can be supplied by request
Applications
•
•
•
•
•
•
•
General heat sink bonding
IC chip packaging heat conduction
Printed circuit board
LED module/board bonding
Flat panel display assembly (e.g. LCD and PDP devices)
COF chip heat conduction
Mechanical fastening such as clamp, bracket or screw can be used in parallel with this tape
3M™ Thermally Conductive Interface Tape 8926 Series
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.
3M™ Thermally Conductive Interface Tape 8926 Series
Property and test method
Value
Tested in accordance with
ASTM D-3330 test method
SUS 304 Test substrate
15 min dwell at 23
o
C
72hr Dwell at 70
o
C
(For reference)
Tested in accordance with
ASTM D-1002 test method
Dynamic Shear
Crosshead speed: 305 mm/min
Foam Density (gram/cm
3
)
Dielectric Strength (KV/mm)
Thermal conductivity*
Flammability**
Operating Temperature
Range*** (3M Test Method)
Product Series
Thermal conductivity
Thermal Impedance
Thermal Impedance (metric)
90 Angle Peel Adhesion
Crosshead speed: 508
mm/min
Liner side
Non-liner side
Liner side
Non-liner side
Unit gram/25.4mm width
0.2
0.25
0.5
1300
1300
2000
2000
Kg/6.25cm
2
15
1300
1300
2000
2000
1300
1300
2000
2000
Initial Adhesion
(SUS to SUS)
1.60 (+/- 0.10)
15
1.5 W/m-K
UL94
V-0
Long Term (Weeks- Months) Up to 80
o
C
Short Term (Hours-Days)
UP to 90
o
C
8926-02
1.5 W/m-K
1.31
o
C-in
2
/W
8.49
o
C-cm
2
/W
8926-025
1.5 W/m-K
1.35
o
C-in
2
/W
8.74 C-cm
2
/W
8926-05
1.5 W/m-K
1.50
o
C-in
2
/W
9.70
o
C-cm
2
/W
* Thermal Conductivity Interface Tape 8926 Test Methods:
1.5W/m-K in XY direction per Hot wire plane Test method (Test equipment: QTM-500)
1.5W/m-K in Z direction tested in accordance with a simplified ASTM D5470 type method (Test equipment: T3ster DynTIM)
**Flame rating is only valid for the material coated on one side of aluminum plate with minimum 1.0mm thickness and the other side
of recognized component (QMTS2) FR-4 laminate at minimum 0.8mm thickness.
***Note: The end use customer application, design and verification testing will determine the final in use effective temperature range
based on each application’s environmental conditions.
Application Techniques
Bond strength is dependent upon the amount of adhesive to surface contact developed. Firm application
pressure helps to develop better adhesive contact and improve bonding strength
To obtain optimal adhesion, the bonding surfaces must be clean, dry and well unified. 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 tape application temperature range is 21°C to 38°C (70°F to 100°F). Initial tape application to surfaces at
temperatures below 10°C (50°F) is not recommended because the adhesive becomes too firm to adhere readily.
However, once properly applied, low temperature holding is generally satisfactory.
Storage and Shelf Life
The shelf life of 3M™ Thermally Conductive Interface Tape 8926 Series is 12 months from the date of manufacture
when stored in original cartons at 21°C (70°F) and 50% relative humidity.
3M™ Thermally Conductive Interface Tape 8926 Series
Certificate of Analysis (COA)
The 3M Certificate of Analysis (COA) for this product is established when the product is commercially available from
3M. The commercially available product will have a COA specification established. 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 representative for
this product’s COA.
This technical data sheet may contain preliminary data and may not match the COA specification limits and/or test
methods that may be used for COA purposes.
Final product specifications and testing methods will be outlined in the products Certificate of Analysis (COA) that is
shipped with the commercialized product.
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 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 OR 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
1-800-251-8634 phone
651-778-4244 fax
www.3M.com/electronics
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