Conformal coating material (lacquer) is applied to electronic circuitry to act as protection against moisture, dust, chemicals, temperature extremes that if uncoated (non-protected) could result in a complete failure of the electronic system. Furthermore coating material has proved to actually reduce the effects of mechanical stress and vibrations on the circuit.

The coating material can be applied by various methods, from manually brushing, spraying, dipping, but due to the increasing complexities of the populated boards being designed and with the ‘process window’ becoming smaller and smaller the necessity for accurate coating via robot selective coating is growing in demand.

Nordson Asymtek is by far, the World Leader (in units sold, turnover) due to their constantly evolving technology and their sole company focus being dispensing technologies.

The SL-940 platform is the industry standard dispensing solvent based material at 750 mm / second, non atomized.

Key advantages of the Asymtek solution are

• speed (throughput)
• edge definition of material
• accuracy and repeatability

Asymtek is supported within Amtest by seven engineers with over 150 platforms installed within the Amtest territories.