Contact Construction and Plating
The 9-330808-3: This is a stamped-and-formed socket contact from TE's 330808 base series, designed to accept a mating pin in the 0.013" ~ 0.020" diameter range. The contact material is beryllium copper, chosen for its spring properties and fatigue resistance over repeated mate/unmate cycles.
Dimensions and Fit
Socket depth is 0.130" (3.30mm), which sets how far the mating pin travels into the contact before bottoming. The overall length is 0.142" (3.61mm), and the flange diameter is 0.059" (1.50mm) — these dimensions govern the clearance needed in the housing cavity or panel hole. The mounting hole diameter required in the PCB or panel is 0.040" ~ 0.041" (1.02mm ~ 1.04mm). This is a press-fit or solder-tail clearance dimension, not a thread size. The closed-bottom feature means the socket has a solid base — no through-hole for the pin to exit. This is typical for a contact that terminates a wire or a solder cup, not a feed-through application.
The beryllium copper spring maintains contact force across this range without permanent set.