The Centalic RQ50-SC is a press-in receptacle for fine-pitch probe fields, with a solder-cup termination. It is pressed into the fixture's probe plate and the spring probe seats in it, so a worn probe can be pulled and replaced without unsoldering or rewiring.
At a 1 mm mounting hole it is the smallest body in Centalic's receptacle range — the 50 mil-class option for boards whose test points are too close together for a 75 mil field, and dimensionally interchangeable with an INGUN KS-550 plate layout. The SC variant terminates in a solder cup; RQ50-WW is the same body finished with a wire-wrap post.
In Studio this receptacle is paired with the Centalic PQ50-A-4GG (cupped tip) and PQ50-B-4GG (needle tip) probes, and with the INGUN GKS-550 307 090 A 1500.
