Abstract: A lot traceable printed circuit board (PCB) includes a substrate having thereon a patterned circuit layer and a working zone carrying production information related to the PCB itself. The working zone includes a plurality of code boxes, wherein each of the code boxes has a first probe region and second probe region. A single set of resistance test loop is disposed within the first probe region. Four sets of resistance test loops are disposed within the second probe region. A frying probe tester is used to probe the set of resistance test loops respectively for abstracting the production information recorded in the working zone.

Abstract: An embedded chip package includes a substrate having a dielectric interposer, a first metal foil on a first surface and a second metal foil on a second surface of the substrate, wherein the substrate has a cavity recessed into the first surface; a metal heatsink embedded within the cavity; a semiconductor die mounted on a flat bottom of the metal heatsink; a dielectric layer covering the first surface of the substrate; at least one built-up circuit trace layer on the dielectric layer; a solder resist layer on the built-up circuit trace layer and on the dielectric layer; a heat-dissipating metal layer on the second metal foil; and heat-dissipating plugs connecting the flat bottom of the metal heatsink and the heat-dissipating metal layer.

Abstract: A lot traceable printed circuit board (PCB) includes a substrate having thereon a patterned circuit layer and a working zone carrying production information related to the PCB itself. The working zone includes a plurality of code boxes, wherein each of the code boxes has a first probe region and second probe region. A single set of resistance test loop is disposed within the first probe region. Four sets of resistance test loops are disposed within the second probe region. A frying probe tester is used to probe the set of resistance test loops respectively for abstracting the production information recorded in the working zone.