Patent ID: 6946733

Claim:
A ball grid array comprising: a) a substrate having a top surface and a bottom surface; b) at least first and second conductive pads located on the top surface; c) at least first and second ball pads located on the bottom surface; d) a resistor located on the top surface between the first and second conductive pads, the resistor having a first end and a second end, the first end being connected to the first conductive pad and the second end being connected to the second conductive pad; e) an insulative coating covering the resistor, the top surface and a portion of the first and second conductive pads; f) a first opening defined in the insulative coating, the first opening being located over at least a portion of the first conductive pad and adapted to allow a first electrical probe to be inserted through the first opening and into contact with the first conductive pad; g) a second opening defined in the insulative coating, the second opening being located over at least a portion of the second conductive pad and adapted to allow a second electrical probe to be inserted through the second opening and into contact with the second conductive pad wherein, in combination, the conductive pads and the openings allow a test of the electrical characteristics of the resistor to be performed through the first and second electrical probes; h) at least first and second conductive vias extending through the substrate between the top and bottom surfaces, the first via being electrically connected between the first conductive pad and the first ball pad, and the second via being electrically connected between the respective second conductive pad and the second ball pad; and i) first and second conductive balls mounted to the first and second ball pads respectively.