Attaching Components on PCBs

Before soldering, chips or SMDs (surface mounted devices) are often attached to the PCB (printed circuit board) with UV-curing adhesive. This allows, for example, several chips or other components to be glued onto on a circuit board within just a few seconds to prevent their falling or sliding out of position on the PCB. The secured chips can then be reflow-soldered in a single work step, which saves time and speeds up production.

Panacol’s adhesives for SMD assembly have been developed specially to cure rapidly at exposure to heat or under UV light. Once cured, the adhesives in the table below are short-term temperature-resistant and therefore suitable for holding components before and during reflow soldering onto PCBs.

On request these adhesives are also available in red colour or with fluorescent pigment to facilitate quality and application monitoring. Their red colour or fluorescence makes the adhesive clearly visible to allow the bond quality of every component to be easily inspected also in mass production. Especially the red stain creates a clear contrast to the usually green PCBs.

UV-curing adhesives secure components on PCBs

The table below lists a selection of Panacol adhesives that are suitable for holding components on PCBs and for reflow soldering. Further products and custom solutions are available on request.

Adhesive Viscosity [mPas] Base Curing*
Vitralit® 6104 VT 80,000-90,000 acrylate UV
thermal
Vitralit® UD 2018 shear thinning epoxy UV
thermal
Vitralit® UV 2115 20,000-30,000 hybrid UV
VIS
Structalit® 3060 30,000-40,000 epoxy thermal
Structalit® 5604 25,000-40,000 epoxy thermal

*UV = 320 - 390 nm