Preliminary
Technical Data
January 2011
3M™ Thermally Conductive Interface Silicone Pad 5515S
Developmental Status Notice
3M™ Thermally Conductive Interface Silicone Pad 5515S is a 3M developmental product. It is currently available on a
limited basis and is only provided for market and technical evaluation. The future availability, formulation, performance
properties, and pricing for the material are not guaranteed and are subject to change. To discuss your evaluation, please
contact your local 3M Technical Service.
Product Description
Note:
The data presented in this preliminary data sheet are 3M’s best estimates for the current product construction being
evaluated. While this product is being developed for general commercialization, this product is still considered
developmental at this time and changes in product construction or process conditions may occur that can cause
subsequent changes in product characteristics or performance. User should consult with 3M before making any
business plans in reliance upon the future availability or the current properties of this product.
3M™ Thermally Conductive Interface Silicone Pad 5515S consists of a thin polyimide film laminated on existing silicone
pad product - #5515 to enhance the electrical insulation performance, anti-abrasion and ease of handling and die cutting.
The main function of this product is to provide a preferential heat transfer path between heat generating components and
heat sinks, heat spreaders or other cooling devices. Pad 5515S consists of a 13 µm thick Polyimide film that has good
dielectric strength and mechanical durability and a conformable and slightly tacky silicone elastomeric sheet filled with
thermally conductive ceramic particles which provide good thermal heat transfer and electrical insulation performance.
Product Uses
This product can be used for heat management of electronic devices and joining/stacking parts in electronic components.
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3M™ Thermally Conductive Interface Silicone Pad 5515S
Key Features
• Thin for lower thermal impedance, 0.20mm and 0.25mm thick products available
• High thermal conductivity
• Excellent electrical insulation properties
• Good dimensional stability for easy and convenient converting
• Anti-abrasion
• Good conformability performance
• High pressure relaxation
• Inherent surface tack allows pre-assembly
Product Construction
3M™ Thermally Conductive Interface Silicone Pad 5515S-20 (25)
Removable Film liner
13 µm PI Film carrier
Thermally conductive silicone elastomer
Removable Film liner
Standard thickness (Silicone layer + PI film): 0.2 (0.25) mm
Application Ideas
• IC Packaging Heat Conduction
• Insulation TIM between Power TR and HS
• Assembly of Metal/Ceramic Heat Sink Device
• Spacer for Battery Module/Pack
• COF Chip Heat Conduction
• LED Module/ Board TIM
• HD TV Address IC Chip and Scan Module
• Thin Gap Filling between board, module and chassis
Mechanical fastening such as clamp, bracket, screw and additional tapes and adhesives bonding can be used in parallel
with this pad.
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3M™ Thermally Conductive Interface Silicone Pad 5515S
Typical Physical Properties and Performance Characteristics
Note:
The following technical information and data is based upon limited 3M testing conditions and should not be used for
specification purposes.
3M™ Thermally Conductive Interface Silicone Pad 5515S-20 / 5515S-25
Method
Value
0.2 / 0.25 (±0.025mm)
QTM-500
UL 94
TS-TM-441
ASTM D2240
ASTM D257
ASTM D149
100 Hz
Dielectric Constant*
*3M™ Thermally Conductive Interface Silicone Pad 5515S-25 tested.
Property
Thickness (mm)
Thermal Conductivity (W/mK)*
Flammability*
Density (g/cm
3
, @ 25°C)*
Hardness (Shore 00)*
Volume Resistivity (Ω-cm)*
Dielectric Strength (kV/mm)*
2.7
V-0 (Passed 3M Internal FR Test)
2.8 (±0.25)
90 (±10)
8.6 x 10
14
17.7
1 Khz
18.2
1 Mhz
18.3
ASTM D150
18.4
Heat resistance of 3M™ Thermally Conductive Interface Silicone Pad 5515S-25
Duration
Thermal Conductivity (W/mK)
Hardness (Shore 00)
Appearance
Aged at 130°C in high temperature chamber.
Initial
2.7
93
100
2.7
94
No effect
500
2.7
94
No effect
1000
2.7
94
No effect
Application Techniques
• Positioning and adhesion strength is dependent upon the total amount of surface contact developed. Firm application
pressure helps develop better wetting and improve adhesion.
• To obtain optimum thermal conductivity, the wetting surfaces must be maximized. For better contact, clean, dry and well
unified surface condition is 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 0°C is not
recommended because the pad becomes too firm to be wetted readily. However, once properly applied, low temperature
holding is generally satisfactory.
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3M™ Thermally Conductive Interface Silicone Pad 5515S
Certification/Recognition
MSDS:
3M has not prepared a MSDS for this product which is not subject to the MSDS requirements of the Occupational
Safety and Health Administration’s Hazard Communication Standard, 29 C.F.R. 1910.1200(b)(6)(v). When used under
reasonable conditions or in accordance with the 3M directions for use, the product should not present a health and safety
hazard. However, use or processing of the product in a manner not in accordance with the directions for use may affect its
performance and present potential health and safety hazards.
TSCA:
This product is defined as an article under the Toxic Substances Control Act and therefore, it is exempt from
inventory listing requirements.
RoHs Complaint/REACH Compliant:
This product complies with the European Union’s “Restriction of Hazardous
Substances” (RoHs) initiative and with European REACH regulations 2002/95/EC and 2005/618/EC.
For Additional Information
To request additional product information or to arrange for sales assistance, contact your local 3M Technical Service.
In the U.S., address correspondence to: 3M, Electronics Markets Materials Division, 3M Center, Building 209-1C-30,
St. Paul, MN 55144-1000.
Technical Information and Data
Technical information and data, recommendations, and other statements provided by 3M are based on information, tests, or
experience which 3M believes to be reliable, but the accuracy or completeness of such information is not guaranteed. Such
technical information and data are intended for persons with knowledge and technical skills sufficient to assess and apply
their own informed judgment to the information.
Important Notice
This 3M material is a developmental material that has not been introduced or commercialized for general sale, and its
formulation, performance characteristics and other properties, and availability are not guaranteed and are subject to change
without notice. User is responsible for evaluating and determining whether a 3M material is suitable and appropriate for a
particular use and intended application.
Disclaimer of Warranty
This 3M material is made available as “AS IS”. 3M MAKES NO WARRANTIES OR CONDITIONS, INCLUDING, BUT
NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF DEALING, CUSTOM, OR USAGE
OF TRADE.
Limitation of Liability
This product (the “Product”) is developmental. As such, Product may vary product to product or lot to lot or be changed in
the future without notice. 3M does not guarantee future availability. Recipient has sole responsibility for determining
whether if a Product is fit for Recipient’s particular purposes and suitable for Recipient’s production methods. 3M MAKES
NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO: (1) IMPLIED WARRANTIES
OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, AND ARISING OUT OF A CUSTOM,
COURSE OF DEALING, OR USAGE OF TRADE; (2) WARRANTIES RELATING TO A PRODUCT’S EFFECTIVE
LIFE OR ABILITY TO SURVIVE ANY TESTING; OR (3) A PROMISE THAT TECHNICAL ISSUES NECESSARY TO
DEVELOP A COMMERCIAL VERSION OF A PRODUCT WILL BE RESOLVED.
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Electronics Markets Materials Division
3M Center, Building 209-1C-30
St. Paul, MN 55144-1000
www.3M.com/electronics
3M is a trademark of 3M Company.
Please recycle. Printed in U.S.A.
© 3M 2011. All rights reserved.
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