What is this button-like clickable metal, on a PCB, called?

When I receive prototype from supplier, I see a button-like clickable metal on it. Very interesting. What's that?

It’s called dome switch.

To use this switch you will need to:

  • Decide actuation force
  • Size of the switch
  • Select a switch — try a few different types before you pick one.
  • Implement contact footprint in PCB compatible with the dome switch.
  • Get the dome switch or it’s assembly (dome switch stuck to a plastic film. Lay it down on PCB after SMT process.)

#PCB Design

Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.
Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

What Others Are Asking

Can HASL finish be used for castellated pads?

I am designing a PCB that uses castellated edges to connect to the parent board. I would like to use hot air solder leveling finish to save on costs for prototyping, but I am concerned that the non-planar surfaces of the module may pose assembly issues. Is it common at all to use HASL for castellated boards, or do I need Electroless Nickel Immersion Gold to ensure successful assembly?

Read Detailed Advice From Blog Articles

Scroll to Top