While looking for rotary switches to use as user inputs to a processor, I came across these three footprints:
I'm considering using a surface-mount part for board layout considerations, but am concerned about physical stability with repeated adjustment.
To me, the through-hole part seems vastly more able to withstand repeated torques, but what about the two surface-mount footprints? Which one is going to be stronger against a twisting motion?
Best Answer
From a ME perspective, I think you've ordered them in decreasing ability to withstand a torque. The lever arm is shortest on the J-lead (bottom) package.
Those switches continuously rotate, so I don't think torque will be a major issue. I'd worry more about a ham-fisted customer somehow prying the part sideways.