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Whoever knows how that circle terminations called (part number)? enter image description here

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    \$\begingroup\$ It is a test point for hooking on probes. \$\endgroup\$ – Oldfart Apr 7 '18 at 10:36
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    \$\begingroup\$ I've sometimes seen it informally called a 'hairpin', though 'through hole test point' would be better. \$\endgroup\$ – Neil_UK Apr 7 '18 at 10:41
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Keystone part #5000 through-hole test point.

enter image description here

On early board spins, I like to put a footprint for at least one for a scope probe ground (usually black, but red is easier to see). They can be omitted in production as they are not particularly cheap. You can get SMT ones that are machine installable but they don't work as well and I don't think they are very appropriate.

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