Slip Stream 24/7 – Global Supply and Distribution Company providing 3M Industrial, Commercial & Safety Solutions
US Spain
SKU 7010305068
Legacy SKU WX300950747
UPC 00051131289123
Part Number 5549S-15

3M™ Thermally Conductive Silicone Interface Pad 5549S is a highly conformable, slightly tacky silicone elastomer pad. Designed to provide preferential heat transfer path between heat generating components and heat sinks or other cooling devices.

  • Very high thermal conductivity and good electrical insulation properties
  • Good softness and conformability even to non-flat surfaces
  • Thin polymeric film carrier supported on 1 side for good converting and handling properties
  • Slight tack allows pre-assembly
  • Good dielectric properties
  • Good wettability for better thermal conductivity
  • High temperature resistance
  • Tacky both sides
  • Larger sheet size is available
Estimated date of shipment June 5  


Minimum Order 60 Sheets
Order Increment 60 Sheets
Product Dimensions
Imperial Metric
Weight 6.8123 LBS
Width 8.268 in 210 mm
Shipping Dimensions
Weight 3.5273 lb
Length 9.645 in
Width 6.692 in
Height 2.755 in
Brochures, Catalogs & Data Sheets

3M™ Thermally Conductive Silicone Interface Pad 5549S has a medium-soft pad that conforms to uneven substrates, providing excellent wettability to fill gaps for improved thermal performance. The "S" supporting layer (permanent film carrier) has a non-tacky surface, providing excellent workability, puncture resistance, and the flexibility to rework materials. The thin, firm, low-tack layer provides easy handling for pre-assembly and die-cutting. This pad provides robust thermal management for applications in a variety of market segments, such as consumer electronics, automotive, LED lighting, medical devices, communication infrastructure, and aerospace & defense.

Recommended Applications:
Heat transfer between PCB and heat sink
Integrated chip (IC) packaging heat conduction
Chip on film (COF) heat dissipation
Gap filling in electronic devices
Decrease of compression stress to electronic parts by thermal pad softness

LED displays
Electric vehicle (EV) batteries
Wireless charging units
Satellite navigation
Process control equipment
Test & measurement devices

Our family of 3M(TM) Thermally Conductive Silicone Interface Pads performs well in applications requiring high temperatures. The soft silicone pads conform to a variety of substrates. These pads come in a variety of thicknesses to meet your design needs. Some pads can be customized beyond standard thicknesses for advanced designs.

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