The 5050871-1 is a single-circuit PCB pin receptacle from TE Connectivity's Series 5 family. It accepts a mating pin diameter of 0.042 to 0.049 inches (1.07-1.24 mm) and terminates via solder — no tail, open-bottom design. The contact is beryllium copper with 30.0 microinches of gold plating, a combination that delivers high cycle life and stable contact resistance in corrosive or frequently mated environments. The socket depth is 0.275 inches (6.99 mm), overall length 0.288 inches (7.32 mm), and the flange diameter is 0.118 inches (3.00 mm). The mounting hole diameter ranges from 0.101 to 0.103 inches (2.57-2.62 mm).
Contact Material and Plating: Why Beryllium Copper and 30 Microinches Gold
Beryllium copper is chosen for its high tensile strength and fatigue resistance — it maintains contact force over repeated insertions without taking a permanent set.
It is available in bulk packaging.