3M 5516 Technical Data
3M™Hyper Soft Thermally Conductive Interface Pads
5516 / 5516S
Product Description
3M™ Hyper Soft Thermally Conductive Interface Pads 5516 / 5516S 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.
• Good thermal conductivity and good electrical insulation properties.
• Good softness and conformability even to non-flat surfaces.
• Softness results in low stress on board components.
• “S” version incorporates a thin PEN (polyethylene-naphthalate) film carrier for improved handling and a non-
tacky surface for ease of rework.
• Slight tack allows pre-assembly. Good wettability for better thermal conductivity.
3
Removable Film liner
Construction
Thermally conductive silicone elastomer
Removable Film liner
3M™ Hyper Soft Thermally Conductive Interface Pad 5516
Standard thickness (excludes liner): 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm
Permanent PEN Film (0.009 mm) carrier
Thermally conductive silicone elastomer
Removable Film liner
3M™ Hyper Soft Thermally Conductive Interface Pad 5516S
Standard thickness (excludes liner): 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm
Technical Data December, 2008
3M™Hyper Soft Thermally Conductive Interface Pads 5516 / 5516S
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.
3M™ Hyper Soft Thermally Conductive Interface Pads 5516 / 5516S
Property Method Value
Thermal Conductivity (W/mK) ASTM D5470 3.1
Flammability UL 94 V-0 (5516 0.5 mm~ & 5516S 1.01 mm~)
V-1 (5516S 0.5-1.0 mm)
Density (g/cm
3
, @ 25°C) – 2.9
Hardness Shore 00
Note 1
5516 @ 50
5516S @ 72
Volume Resistivity ( -cm) ASTM D257 6.9 x 10
14
Dielectric Strength (kV/mm) ASTM D149 3.1
Dielectric Constant ASTM D150 11.0 (1-100 kHz)
100%
80%
60%
40%
20%
0%
Compression (%)
3M™ Hyper Soft Thermally Conductive
Interface Pad 5516 (1 mm)
Rate: 0.5 mm/min
Stress (MPa)
0 1
2
3
4
Compression vs. Stress
Notes:
1) Shore OO Test Method based on a 6mm thick sample. Results will vary for different thickness samples.
(2)
Duration (hrs) Initial 500 1000 3000
Thermal Conductivity (W/mK) 2.8 2.8 2.8 2.8
Hardness (Asker C) 49 50 50 50
Appearance – No effect No effect No effect
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.
Environmental Aging Data
Heat resistance of 1.0 mm 3M™ Hyper Soft Thermally Conductive Interface Pad 5516
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