Technological demonstration of selective plated circuits

For start-up companies Suron develop processes and prototypes of different metal products. In these pictures you can see a work we made for a young start-up which required generating coupled copper-combs over FR4, where one of the combs is selectively plated using matte tin. The process includes photo chemical etching of FR4 and selective plating of the conductor’s copper.

The sheet after the etching and before & after the plating

The sheet after the etching and before & after the plating

The sheet after selective matte tin plating (SEM Microscope)

The sheet after selective matte tin plating (SEM Microscope)