Can we use zinc plated screws for PCB grounding?
Means the zinc coated screw head will be in contact with copper trace on PCB for grounding.
But this can cause galvanic corrosion between zinc and copper.
Can you all advise me on this topic?
Can this cause galvanic corrosion?
Electronic – PCB grounding through screw head
coppercorrosiongroundingpcb
Related Solutions
You might try searching for solderable bus bars. They come in various sizes and shapes. You can solder them down to the PCB, and they provide masses of current carrying capability.
Use a via to a track and set via pad size to whatever you wish.
There will be a minimum size to obtain reliability.
Your PCB supplier will (or should) have design rules covering this.
Best Answer
If you can't tolerate corrosion then don't use zinc on copper. If you look on the table below zinc on copper is ADE which means plating is consumed and corrosion increased. Another thing to consider is if the copper is plated then it will be zinc on nickel but I don't have info on that.