Patent ID: 7601018

Claim:
A BGA-type test and burn-in socket for integrated circuits (ICs), comprising: a plurality of contacts, each of the contacts comprising: only a single upper contact terminal having a straight-line shape and contacting a ball of an IC; an elastic part that is elastically deformed; a contact body; and a contact lead soldered into a through hole of a printed circuit board (PCB); a socket body, comprising: a plurality of contact holes to receive and support the contacts; a plurality of positioning pins provided on a lower portion of the socket body to secure the socket body to a predetermined position on the PCB; a stopper provided on the lower portion of the socket body to receive and support the contact body; a lead guide downwardly movably provided on the lower portion of the socket body, protecting the contact lead, and guiding a position of the contact lead; and a slide and a cover provided on an upper portion of the socket body; the cover elastically biased to the socket body via a plurality of cover springs and moving downwards by a predetermined distance, the cover comprising: a plurality of open cams and closure cams to move the slide horizontally; and a plurality of holder rotating pins to rotate IC holders; the slide elastically biased to the socket body via a plurality of slide springs such that the slide smoothly restores an original position thereof, and elastically supported via holder springs to rotate the IC holders upwards and downwards, the slide comprising: a plurality of open cam contact parts contacting the open cams of the cover, when the cover is pressed down; a plurality of closure cam contact parts contacting the closure cams of the cover, when the cover moves upwards to restore an original position thereof; a plurality of contact through holes through which the contacts movably pass; and a plurality of rectangular ball guides to receive associated balls of the IC; and a plurality of IC holders to move downwards, thus pressing an upper portion of the IC, when the cover is pressed downwards to push the holder rotating pins of the cover, whereby, when the cover moves downwards by a predetermined distance, the slide is moved rightwards by the open cams of the cover and the IC holders are opened, so that the upper contact terminal of each of the contacts is in close contact with a left side in an associated contact through hole, and, after the IC is seated on an upper surface of the slide, the cover restores the original position thereof, so that the closure cams move the slide leftwards and the IC holders press the IC downwards, and thereafter, the IC ball received in a ball insert hole of each of the ball guides moves to the left together with the slide, and, when the cover has completely restored the original position thereof, the IC ball comes into contact with the upper contact terminal of each of the contacts while being received in the ball guide.