Patent ID: 7362114
Filing Date: 2008-04-22
Classification: G01R

Abstract:
1. An apparatus for interfacing electronic packages and test equipment for the packages, comprising: a printed circuit board having first and second opposing surfaces, a plurality of vias formed in the printed circuit board and forming a predetermined pattern on the first surface, each via having upper and lower ends and an inner diameter; a test socket overlaying and being connected to the first surface of the printed circuit board, the test socket including a first plate overlaying a second plate, each of the first and second plates including a plurality of bores corresponding to the vias in the printed circuit board; a conductive sleeve member positioned in each via, the sleeve member having an open upper and a closed lower end; a plunger comprising an annular flange extending outwardly from a rod, the flange dividing the rod into a first rod portion extending upwardly from the annular flange and a second rod portion depending downwardly from the annular flange, the first rod portion including an upper surface defining a selected contact region; and a biasing member positioned about the second rod portion and being seated against the first surface of the printed circuit board and the lower surface of the annular flange; wherein, when the apparatus is in an operating position, the first rod portion is at least partially received in a bore of the first plate, the annular flange is received in a bore of the second plate, and the second rod portion is at least partially received in the conductive sleeve member, and the plunger is urged upwardly to make electrical contact with a package terminal.