Electronics > Beginners

mounting potentiometer

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LaserTazerPhaser:
Does this small tab need to be entirely on PCB or need to protrude out and contact wall onto which it will be screwed onto?


https://www.digikey.com/products/en?keywords=P091S-QC15BR50K

Dundarave:
When inserted into a small corresponding hole in the panel it’s being installed in, it acts to prevent the torque caused by the nut tightening from twisting the pot out of the circuit board.

LaserTazerPhaser:
But that slot making contact with panel would cause it to be mounted unevenly.

floobydust:
It's supposed to go into a cutout (hole) on the front panel.
Tightening the nut, or cranking the knob can otherwise rip the potentiometer off the PC board. The pins can't really stop the body from rotating.
You can buy some without the anti-rotation tab.

I mount the green body at the PCB edge, so the cast portion sticks out.

Zero999:

--- Quote from: LaserTazerPhaser on May 20, 2019, 05:54:06 am ---But that slot making contact with panel would cause it to be mounted unevenly.

--- End quote ---
The tab doesn't take up much space, just drill a small intent in the panel. The drill should be a little wider than the tab and be careful not to drill too deep: the hole should be blind, i.e. not go all the way through the panel.

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