Thermally Conductive Adhesives For Applications in Electronics

Thermally conductive adhesives are often used to dissipate heat from power electronics. Used to bond heat sinks, for example, their heat conductivity reduces thermal strain to prevent performance loss or failure of electronic components. Thermally conductive adhesives are also used as encapsulation compound for temperature sensors for enclosures or reactors. 

Adhesives with thermal conductivity are synthetic resins augmented with metallic or inorganic filler materials. The best thermal conduction coefficients can be achieved with metallic fillers such as silver or graphite. These, however, also make the adhesive electrically conductive, which is undesirable in many applications. To achieve thermal conductivity and electrical insulation at the same time, adhesives augmented with ceramic or mineral-based fillers must be used. 

Compared to heat transfer compounds,  thermally conductive adhesives have the advantage of holding or mounting components in addition to dissipating thermal energy.

Panacol offers a wide selection of thermally conductive adhesives: The spectrum ranges from epoxy resin based single- and two-component adhesives of the Elecolit® series, which are thermally curing and have a high temperature resistance of up to 200°C, to acrylate-based UV-curing adhesives of the Vitralit® line.

Thermally conductive adhesive is used for bonding heat sinks in the electronics industry

The table below lists a selection of  thermally conductive adhesives from Panacol. Further products and custom solutions are available on request.

Conductive Adhesive Application Viscosity [mPas] Base Curing* Properties
Elecolit® 6207 encapsulation
general potting
9,000-12,000 2 component epoxy thermal
room temperature
thermally conductive
black color
Ul listing
Elecolit® 6601 heat sink bonding
sensor bonding
12,000-20,000 epoxy thermal thermally conductive
white color
Elecolit® 6603 magnet bonding
heat sink bonding
95,000-115,000 epoxy thermal thermally conductive
Elecolit® 6604 sensor bonding 110,000-140,000 epoxy thermal thermally conductive
Elecolit® 6616 heat sink bonding paste-like 2 component epoxy thermal
room temperature
thermally conductive
black color
Vitralit® 6129 various application for electronics and PCB assembly 10,000-40,000 acrylate UV
thermal
White color
very high resistance to heat and chemicals
very good thermal conductivity
Vitralit® 6137 various application for electronics and PCB assembly 150,000-170,000 acrylate UV
thermal
Very high chemical resist.
suitable for high temper. ranges
excellent temper. conductivity
white color
fast fixing of components with UV light
thermal post-curing optional

*UV = 320 - 390 nm