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I'm doing some research into using spring-loaded pogo pin connectors with a mating target for a project I'm working on. During this research, I discovered that there is a concave mating target, yet, I have only seen flat ones on products. Why would I pick one over the other?

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If it makes any difference, in my case the pins would slide into place from the side (lateral), rather than coming from the top (axial).

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  • \$\begingroup\$ Well, for one it helps with centering and prevents things from slipping out for whatever reason. \$\endgroup\$ – DKNguyen Sep 20 '19 at 18:58
  • \$\begingroup\$ How will they be used in your project? \$\endgroup\$ – Bruce Abbott Sep 20 '19 at 19:35
  • \$\begingroup\$ @BruceAbbott rotated in, similar to a DSLR body and lens. But I'm also curious on general use cases. \$\endgroup\$ – Davbog Sep 20 '19 at 23:24
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The concave ones will center the engaging pin and relieve it of lateral pressure. However, disengaging laterally is better done using a flat surface, or you'll actually be increasing the lateral pressure during engagement and disengagement. In your application I'd go for the flat ones.

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Looks like the concave ones would provide better contact and align the slightly wobbly rounded-end spring-loaded pins better.

Not sure why you'd want the flat ones unless they're cheaper and/or more available eg. second-sourced. Maybe easier to wipe clean in some circumstances.

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A regular pointed pin is nice for pads. You might be able to use a concave one on an already pointed object like a pointed 0.1" header.

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