The X-Probe design concept from QA Technology, and similar products leverage an in-line receptacle design that eliminates the outer sleeve portion of the receptacle. This architecture allows a larger diameter, more robust probe, to be mounted on closer centers compared to a conventional probe and socket system.
By eliminating the outer sleeve portion of the socket from the system, a larger test probe can be mounted on a specific pitch (ie. .100" probe on .075" pitch).

The X Probe Socketless Series is comprised of two parts; a probe and a termination pin. The probe is designed around our patented rolled probe tube design with a modified interconnect receptacle on the bottom. The use of this style of in-line interconnect receptacle increases the X Probe tube length slightly. Nearly all other aspects of the probe are the same.

The interconnect receptacle receives the precision interconnect pin located at the top of the termination pin. The termination pin is unique in that it performs all of the functions of a typical socket while staying within the diameter of the probe tube.

The termination pin is the heart of the assembly. It retains the probe at the proper set height utilizing two retention beads while providing a reliable electrical connection from the probe to the test fixture.


  • Mount “larger” probes on closer centers for longer probe life.
  • Eliminating the single press ring socket increases pointing accuracy.
  • Replace socketless probes as easily as conventional probes for preventive maintenance.

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