Properties of the printed circuit board
width, thickness and length, must be small enough for the current the conductor will carry. It is recommended that the power and force paths be larger than the signal paths. In a Stencil multi-layer board, an internal layer may be mostly solid copper to act as a ground
Printed circuit soldermask
covered with solder mask, the inner copper layers are protected by the adjacent substrate layers. The soldering mask soldermask is made of a fluid substance like an ink and is applied in a thin layer similar to varnish on the Stencil entire surface of the printed circuit less on the soldering pads and it also
Printed circuit board silkscreen
the printed circuit, called serigraphy or silkscreen for short, is done on the top layer of the PCB and has the role of a reference indicator for the components on the PCB. Graphics and text on a circuit board's PCB are usually printed with a Stencil non-conductive permanent