Noob confused about number of pins on SPST switches

Discussion in 'General Electronics Chat' started by Seric, Aug 6, 2014.

  1. Seric

    Thread Starter New Member

    Oct 20, 2013
    I am looking for a momentary push button for use on a PCB. I just want a very simple button that leaves the connection open when not pressed, and closes the connection when pressed. So a SPST switch seems to be the way to go.

    But when I look around for a SPST switch on digikey, I quickly get confused about how to actually implement them. I feel that an SPST switch should have only two terminals. Why are there some with any more than that?

    For example, this little button would be perfect for my needs, except for that fact that it has SIX terminals! The datasheet doesn't explain which pin is what, or at least not in a way that I can understand.

    Why can't I have just a simple little on-off button? :confused:
  2. MaxHeadRoom


    Jul 18, 2013
    The terminals conform to a SMT pin out, it is a SPST N.O. P.B. just has common pins on each side.
    Also allows for the optional LED version.