Patent ID: 7815440

Claim:
An electrical contact for being arranged in a test socket to receive an IC package and electrically connecting to a PCB, comprising: an upper contact pin, stamped from a metal piece, having an upper contacting portion and a guiding portion, the guiding portion defining a pair of longitudinal channels at two opposite sides thereof and a slot on a bottom wall of the channel; a lower contact pin coupled to the upper contact pin, the lower contact having a lower contacting portion and a main portion extending from the lower contacting portion, the main portion of the lower contact pin including two symmetrical elastic arms slidable along the channels of the upper contact pin, the elastic arm having a first locking protrusion and a second locking protrusion engaging with the slot of the upper contact pin respectively; the lower contact pin includes a pair of lower projecting portions extending over two sides of the lower contacting portion from a top end of the lower contacting portion for limiting the spring; each elastic arm includes an arc-shaped lower part extending upwardly from the lower projecting portion and a slender upper part extending upwardly from the lower part to engage with the upper contact pin; the guiding portion of the upper contact pin includes a pair of leading arms parallel to each other and a clapboard disposed between the two leading arms and connecting the two leading arms; the clapboard is thinner than the two leading arms, and the channels are provided between the two leading arms and at two sides of the clapboard to allow movement of the lower contact pin; the slot is defined near a bottom end of the clapboard and runs through the clapboard; and a spring enveloping over a predetermined area between the upper contact pin and the lower contact pin.