What this pin socket accepts and where it fits
The 1-5645955-2 is a solder-in PCB pin socket from TE Connectivity's Series 2, designed to accept pin diameters from 0.014" to 0.026" (0.36mm to 0.66mm). It mounts into a 0.052" (1.32mm) plated through-hole and fits boards from 0.031" to 0.093" (0.79mm to 2.36mm) thick, making it a direct drop-in for standard FR4 builds.
Solder termination and board fit
The socket has no tail — the solder joint is made directly into the plated hole. Overall length is 0.184" (4.67mm). Socket depth ranges from 0.100" to 0.170" (2.54mm to 4.32mm), which means it can accommodate pins of varying insertion depths without bottoming out.