3M™ Thermally Conductive Silicone Interface Pads 5519 and 5519S are designed to provide a preferential heat
transfer path between heat generating components and heat sinks, heat spreaders or other cooling devices. These
products consist of a highly conformable slightly tacky silicone elastomer sheet filled with thermally conductive
ceramic particles which provide special features listed as follows.
• Very high thermal conductivity and good electrical insulation properties.
• Good softness and conformability even to non-flat surfaces.
• “S” version incorporates a thin polymeric film carrier for improved handling.
• Slight tack allows pre-assembly. Good wettability for better thermal conductivity.
Construction
1
3M™ Thermally Conductive Silicone Interface Pad 5519
Removable film liner
Thermally conductive silicone elastomer
Removable film liner
Standard thickness (excludes liner): 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm
3M™ Thermally Conductive Silicone Interface Pad 5519S
2
Permanent polymeric film (0.006 mm) carrier
Thermally conductive silicone elastomer
Removable film liner
Standard thickness (excludes liner): 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm
1
Thicknesses
greater than 2mm are available. Please consult your local 3M
representative for additional details.
5519S product is also available in a dual permanent polymeric film carrier
design. Contact 3M for MOQ information and availability.
2
The
3M
™
Thermally Conductive Silicone Interface Pads 5519 and 5519S
Typical Physical Properties
Note:
The following technical information and data should be considered representative or typical only and should not be used
for specification purposes.
Property
Thermal Conductivity (W/mK)
Note 2
Flammability
Density (g/cm
3
, @ 25°C)
Hardness
Volume Resistivity (Ω-cm)
Dielectric Strength (kV/mm)
Dielectric Constant
3M™ Thermally Conductive Silicone Interface Pads 5519 and 5519S
Method
Value
ASTM D5470
UL 94
–
Shore 00
Note 1
ASTM D257
ASTM D149
ASTM D150
4.9
V0
3.1
5519 @ 70
5519S @ 75
1.7 x 10
14
1.5 (5519S = 3.5 est.)
19.5 (1-100 kHz)
Notes:
1) Shore OO Test Method based on a 6mm thick sample. Results will vary for different thickness samples.
2) Thermal conductivity can vary with test method and/or equipment used for testing at different test sites. Thermal K based on testing of the 5519. Effective Thermal
K and Thermal Resistance will be somewhat reduced with the addition of the polymeric film of the 5519S constructions.
Compression vs. Stress
100%
3M™ Thermally Conductive Silicone
Interface Pad 5519 (1 mm)
Rate: 0.5 mm/min
80%
Compression (%)
60%
40%
20%
0%
0
1
2
Stress (MPa)
3
4
5
Note:
Compression vs Stress test results can vary between test methods based on sample size, exact test
set-up, equipment type, etc.
Environmental Aging Data
Heat resistance of 1.0 mm 3M™ Thermally Conductive Silicone Interface Pad 5519
Duration (hrs)
Thermal Conductivity (W/mK)
Hardness (Shore 00)
Appearance
Aged at 130°C in high temperature chamber.
Note:
Thermal Conductivity for aging tested using the QTM-500 Hot Wire Test Method. Values can differ from an ASTM-D5470 TM due to TM differences.
Initial
4.9
69
–
500
4.9
70
No effect
1000
4.9
70
No effect
3000
4.9
70
No effect
(2)
3M
™
Thermally Conductive Silicone Interface Pads 5519 and 5519S
Shelf Life
Product shelf life is 24 months from date of manufacture when stored at room temperature conditions (23-25°C & 50% RH)
and in the products original packaging.
Regulatory
For regulatory information about this product, refer to our website at
www.3M.com/electronics.
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,
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