What this pin socket does in the assembly
The 5050865-3 is a single-circuit PCB pin socket — a press-fit receptacle that accepts a round pin from a mating header or terminal. The open-bottom design lets the pin pass through the socket body, making it suitable for through-hole solder attachment or as a test point where the pin tip must protrude below the board. It belongs to TE's Series 4 family of PCB pin sockets, a standard line for board-level interconnect where a removable pin connection is needed.
Mating pin range and contact reliability
The socket accepts pin diameters from 0.034" to 0.041" (0.86 mm to 1.04 mm) — a tight tolerance that ensures consistent contact force across the range. With a socket depth of 0.247" (6.27 mm) and overall length of 0.260" (6.60 mm), the pin must be inserted at least to the socket depth for full electrical engagement. The no-tail design means the socket body itself is the termination point — no extra pin tail extends beyond the solder joint.
Temperature range and application fit
Rated for -65°C to 126°C, the 5050865-3 covers industrial, automotive underhood, and outdoor telecom enclosures where thermal cycling is routine. The beryllium copper contact retains its spring properties across this range, avoiding the relaxation that can occur with phosphor bronze at high temperature. The mounting hole diameter of 0.072" (1.83 mm) sets the PCB drill size — a standard fit for through-hole soldering. Bulk packaging is typical for low-to-mid volume assembly where tape-and-reel handling is not needed.