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Is there a standard pin header with a 3mm pitch that is similar to the common 0.1" pitch pin headers (shown in photo below)? I'm not even sure what the correct name for these are. What is the best way to search for a part like this on Mouser or Digikey? My searches keep coming up with weird shrouded plastic housing things. Thanks!

0.1" pitch pin header

The part I was interested in connecting to is similar to this, with half-holes along the edges:

3mm pitch connection points

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    \$\begingroup\$ Those pins are separable. So separate them and populate 3mm spaced holes on a PCB with them. \$\endgroup\$ – Brian Drummond Nov 18 '16 at 21:59
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    \$\begingroup\$ I find headers separated at single quantities to be weakened and easily slide out of their plastic. \$\endgroup\$ – Passerby Nov 18 '16 at 23:39
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    \$\begingroup\$ I am not looking for shopping recommendations, I am looking for information on what this type of connector is called and how to find it. \$\endgroup\$ – jjz Nov 22 '16 at 0:05
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    \$\begingroup\$ The PCB probably solders right to another PCB, I don't think the holes were intended for pins. Check the landing pattern in the documentation you didn't provide \$\endgroup\$ – Voltage Spike Nov 22 '16 at 0:42
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    \$\begingroup\$ The half-holes around the edges are called castellations. \$\endgroup\$ – Nick Alexeev Nov 22 '16 at 1:36
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Google found many examples. For example: http://wppro.com/content/en/products/pin-headers/3mm-pitch/product/973.html

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  • \$\begingroup\$ I guess this answers my question. It looks like there aren't any available from Mouser or Digikey or similiar though. thanks! \$\endgroup\$ – jjz Nov 18 '16 at 21:32
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An alternative option for "odd" devices such as this is to design a simple dual-sided PCB with the 3mm castellation landing pads on top, and 0.1" header on bottom. Solder the device to the PCB, install the 0.1" header, and plug into your board. Of course this is solely to make the device modular; if you didn't need modularity, just solder the device directly.

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