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I'm looking for a small rotary switch but don't know the terminology to find what I'm looking for. To be honest I'm not sure they make what I'm looking for. The closest I have found is this, a rotary dip switch.

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But these encode the output. What I want is to have 8 input lines and 1 output line so the user and select one of the 8 input lines. I could do this with the dip switch, a decoder IC and a AND logic IC but I would really rather not need to have additional ICs.

I just need a small switch I can solder to a PCB and to let the user select one of 8 lines.

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You want a SP8T selector switch. For example, this one, but you should be able to find others now that you know what to call it.

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  • \$\begingroup\$ It's the same one I found trough the mouser search tool. How can there be just one suitable part? \$\endgroup\$ – jms Feb 10 '16 at 18:18
  • \$\begingroup\$ It's a rather rare requirement, but you can find some smallish through-hole rotary switches and at least one 10 position slide switch. \$\endgroup\$ – Spehro Pefhany Feb 10 '16 at 18:29
  • \$\begingroup\$ @jms Here's a 3-position non-encoded switch. \$\endgroup\$ – Nick Alexeev Feb 10 '16 at 19:38
  • \$\begingroup\$ @NickAlexeev I was searching for 8pst specifically, and got surprised about the lack of variety. \$\endgroup\$ – jms Feb 10 '16 at 21:10
  • \$\begingroup\$ @jms And, of course, if that one manufacturer decides to end production (and they will some day), you've got a real problem. Nothing else out there looks to be remotely as small. \$\endgroup\$ – Spehro Pefhany Feb 10 '16 at 21:17
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Just use a DIP switch with one side of all the DIP switches connected together into a common: as long as you can deal with use cases where more than one DIP switch is activated.

schematic

simulate this circuit – Schematic created using CircuitLab

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