Products > Test Equipment
Female round 0.025" pin connector
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MarkL:
Nice photos!  Looks look they belong in a parts catalog.

I've found that hot air is good way to get the little PCB out of the compensation dongles.  It's encapsulated in some kind of thermoplastic and gets very pliable, allowing you to slice and peel more easily.

Note the little spark gap on the ceramic between the socket and the wire.  And there's a little hole in the plastic so the plastic doesn't add any insulation to it.  Nice protection feature  by HP.

Also, a slight correction.  You get 35 connectors (not 34) counting the separate black ground lead attached to the header.

I like these better than the Tek sockets.  The Tek sockets are high quality too, but can get ruined from twisting on a square pin or inserting something too large.  If that happens or they get too loose from use, I replace them with the HP sockets.
tooki:
I’m gonna guess those HP sockets are a customized version of high-quality size 22 machined contacts.

Something like this, just with the custom flat solder pad instead of the crimp cylinder: https://www.digikey.ch/de/products/detail/te-connectivity-aerospace-defense-and-marine/204351-1/299512

Inside the stainless tube, the contact looks like this: https://www.digikey.ch/de/products/detail/molex/1731120226/5818004

From personal experience, size 22 contacts (which are what’s in D-sub HD connectors) work well on square pins. I wouldn’t be surprised if HP had slightly smaller contacts made to be a tad snugger.
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