Electrically Conductive Adhesives For Electronics Applications

Bonding instead of soldering: Electrically conductive adhesives have many advantages over conventional soldering processes. Conductive adhesives are the perfect solution for making electrical contacts on temperature-sensitive substrates, as their curing temperature lies clearly below soldering temperature. In addition the adhesives are much more flexible than solder and are therefore better able to withstand vibrations. A further advantage over soldering is that conductive adhesives are lead- and solvent-free. 

There are two types of electrically conductive adhesives: isotropic and anisotropic. Isotropic conductive adhesives (ICA) are electrically conductive in all directions. They are used in applications such as chip contacting and bonding electrically conductive SMDs.
Anisotropic conductive adhesives (ACA) contain special conductive particles in the µm range, which conduct electricity only in one direction. These adhesives are used, for example, in many sensitive structures on circuit boards, such as LCD connections or contacting flexible PCBs, or for bonding antenna structures on RFIDs.  

With its Elecolit® range Panacol offers a broad spectrum of electrically conductive adhesives: single-component adhesives that can be simply applied with dispensers or jets or screen-printed, as well as two-component products that cure at room temperature and have a long storage life. Innovative hardener systems in many of the one part epoxy based adhesives develop cure within minutes.

Contacts on a flexible printed conductor are bonded with conductive silver epoxy adhesive

The table below lists a selection of conductive sealing compounds and silver epoxy or acrylate resins from Panacol. Further products and custom solutions are available on request.

Electrically Conductive Adhesive Application Viscosity [mPas] Base Curing* Properties
Elecolit® 3012 bonding electroconductive parts
screen printing
paste-like epoxy thermal electrically conductive (ICA)
thermally conductive
suitable for screen printing
Elecolit® 3025 bonding heat-sensitive components 80,000-90,000 2 component epoxy thermal
room temperature
electrically conductive (ICA)
thermally conductive
Elecolit® 3036 bonding heat-sensitive components
bonding flexible circuits
paste-like 2 component epoxy thermal
room temperature
electrically conductive (ICA)
thermally conductive
Elecolit® 3043 antenna print
bonding ceramic fuses
4,000-5,000 epoxy thermal electrically conductive (ICA)
thermally conductive
Elecolit® 3063 LCD bonding
bonding flexible conductors
150,000-190,000 acrylate UV + pressure
VIS + pressure
electrically conductive (ACA)
Elecolit® 3064 LCD bonding
bonding flexible conductors
gel-like acrylate UV + pressure
VIS + pressure
electrically conductive (ACA)
Elecolit® 3065 bonding flexible circuits
display and touchscreen sealing
paste-like acrylate UV + pressure
VIS + pressure
thermal
electrically conductive (ACA)
transparent brownish color
Elecolit® 323 bonding electronic components paste-like 2 component epoxy thermal electrically conductive (ICA)
thermally conductive
Elecolit® 325 bonding heat-sensitive components paste-like 2 component epoxy thermal electrically conductive (ICA)
thermally conductive
Elecolit® 327 bonding electroconductive parts paste-like polyimid thermal electrically conductive (ICA)
thermally conductive high temperature resistant up to 275°C
Elecolit® 336 bonding heat-sensitive components paste-like 2 component epoxy thermal, room temperature electrically conductive (ICA)
thermally conductive
Elecolit® 342 ESD protection 1,000-2,000 acrylate thermal electrically conductive (ICA)
thermally conductive
Elecolit® 3653 bonding electroconductive parts
ideal for parts subjected to high vibrations
8,000-13,000 epoxy thermal electrically conductive (ICA)
thermally conductive
Elecolit® 3655 LED die attach 5,000-15,000 epoxy thermal electrically conductive (ICA)
thermally conductive
thixotropic
silver color
Elecolit® 3661 bonding flexible interconnect devices 20.000-40.000 epoxy thermal electrically conductive (ICA)
thermally conductive
stable
flexible
Elecolit® 414 printing circuit paths on flexible substrates 20,000-25,000 polyester thermal electrically conductive (ICA)
thermally conductive

*UV = 320 - 390 nm          VIS = 405 nm