3M Preferred Converter, Authorized Distributor, and Converter of Aearo Technologies LLC products

3M™ Thermal Conductive Silicone Pads

Thermally conductive silicone interface pads provide exceptional thermal conductivity and dielectric strength. These soft silicone interface pads transfer heat from a hot surface to a cooler region of the assembled design. This positive heat transfer reduces the risk of overheating from concentrated heat buildup. Heat-conductive silicone pads allow for the seamless transfer of heat from its production source to cooler areas where the heat can safely dissipate.
3M Thermally Conductive Silicone Interface Pads are available in various thermal conductivities and softness grades to provide excellent gap filling, low assembled stress, and a high degree of wet-out for more efficient heat transfer. These silicone pads can be die-cut to most shapes and have a tacky, conformable performance on both sides. These pads are ideal for rugged, high-temperature applications, including:
  • Automotive batteries 
  • Industrial applications
  • High-temperature devices
  • Process control equipment
Rathbun is your trusted source for innovative technical solutions. Contact us for more information regarding our thermally conductive silicone pads, or call 510-661-0950 with any questions.


Advanced Benefits of 3M Thermal Conductive Pads

Silicone interface pads provide an effective and suitable way to transfer heat between active thermal components and heat sinks. Some of the advantages associated with utilizing heat-conductive silicone pads include the following:
  • UL-94 V-O certified
  • Soft and conformable
  • High-temperature tolerance
  • High thermal conductivity
  • Light tack allows for pre-assembly
  • High-temperature resistance
  • Good wettability for improved & lower thermal resistance
  • Good dielectric properties

Differentiating Between Acrylic & Silicone Interface Pads

Thermal conductive pads provide an excellent way to transfer heat from hot surfaces within a device to areas that maintain a cooler operating temperature.

Acrylic Thermal Management Materials

Acrylic thermal management materials are a preferred solution for electronic applications. Acrylic pads do not contain silicone oils, which can bleed throughout the electronic components. This causes problems, including corrosion of electrical connections. Unlike silicone pads, acrylic thermal material from 3M is low outgassing and provides excellent dielectric qualities.
Acrylic thermal solutions from 3M also provide exceptional conformability and gap-filling properties, allowing for easy and controlled heat flow from one area of the device to another. Acrylic thermally conductive material also provides advanced environmental durability. Acrylic pads offer a lower cost option when compared to the equivalent silicone thermal pad.

Silicone Interface Pads

Conversely, silicone interface pads provide excellent heat durability and can withstand temperatures up to 200C. While often unnecessary for electronic applications, that temperature range is ideal for industrial, rugged, high-temperature solutions. When heat is applied, silicone thermal pads are soft, providing superior conformability.

Heat Conducted Silicone Thermal Pad Application Process

Before installing a silicone interface pad, the installation area should be clean and dry to ensure the best possible thermal performance. For the cleanest possible surface, isopropyl alcohol (isopropanol) should be applied with a lint-free wipe or swab, removing any surface contamination, including dust or fingerprints. The silicone thermal pads should be installed in temperatures ranging from 0° to 40° C for improved adhesion.

Contact Rathbun for Premium 3M Silicone Thermal Conductive Pads Today

Rathbun is a 3M Preferred Converter. We custom die-cut and laser-cut 3M products into complex shapes and sizes. If you are interested in custom cutting, contact us or visit Rathbun’s converting services page. For additional pricing information, request a quote to receive an in-depth price analysis today.