Talking about the process steps of PCB connector surface mount (SMT) technology
Current PCB connector design applications range from simple to highly complex circuits. Requirements for component miniaturization, higher functional density, and lower production costs have led to the trend to use surface mount technology (SMT) instead of conventional conventional hole technology (THT).
PCB connectors make contact in surface mount technology (SMT) by connecting to a connection surface on the side of the housing or directly below the housing, and also offer unpackaged components that are directly mounted on the PCB and wired or flip-chip on-chip technology Create connections.
But there are still some electromechanical components, like connectors or relays, that are not available in the Surface Mount Device (SMD) version, so they are mounted on the PCB by applying the classic THT process after the actual SMT process itself.

The best solution to this challenge is a connector developed for the through-hole reflow (THR) process, which also makes the wired device connection technology suitable for the surface mount (SMT) process, thus enabling the connector to support SMT production complete continuity.