PCB with copper exposed, no solder mask or silkscreen. The next layer is a thin copper foil, which is laminated to the board with heat and adhesive. On common, double sided PCBs, copper is applied to both sides of the substrate. In lower cost electronic gadgets the PCB may have copper on only one side.arious portions of the PCB that have no traces but has a ground pour instead. 1  Plated through hole-a hole on a board which has an annular ring and which is plated all the way through the board. 2  May be a connection point for a through hole component, a via to pass a signal through, or a mounting hole.
1 'Bye is the most common way to say goodbye in English. 2  You can say 'Bye to anyone you know, from friends to coworkers to clients. 3  It's common to say 'Bye at the very end of a conversation, even after you've said some of the other phrases in this list. 4  For example:
1 'Bye is the most common way to say goodbye in English. 2  You can say 'Bye to anyone you know, from friends to coworkers to clients. 3  It's common to say 'Bye at the very end of a conversation, even after you've said some of the other phrases in this list. 4  For example: