Patent ID: 8058887

Claim:
A probe test card assembly comprising: a printed circuit board having a first side and a second side; a substrate having a first side and a second side, the first side substantially facing the second side of the printed circuit board; a plurality of interposer probes directly attached to the substrate and directly contacting the printed circuit board, wherein each interposer probe from the plurality of interposer probes includes a base portion and a tip portion at opposite ends of the interposer probe, the base portion being attached to the first side of the substrate and the tip portion being in contact with the second side of the printed circuit board; a substrate holder for holding the substrate relative to the printed circuit board so that the tip portions of the plurality of interposer probes make contact with the second side of the printed circuit board; and a plurality of test probes attached to the second side of the substrate for making electrical contact with a device under test.