Properties of the printed circuit board
In a multi-layer board, an internal layer may be mostly solid copper to act as a ground CAD design Projection, plane for shielding and power return. For microwave printed circuits, transmission lines can be laid out in a planar form, such as stripline or microstrip, with dimensions carefully controlled to ensure consistent
Printed circuit board assembly
concurrent with the adoption of surface mount technology. "Through holes" components are assembled Projection, design CAD by their legs passing through the board and glued to the pads on the other side. "SMD" components are soldered on the same side of the board. A board can use both methods
Printed circuit board silkscreen
used to render useful information on the PCB board that can help design CAD Projection, users during assembly. It is used to mark component values, part numbers, test points, polarity, etc. Screen printing does not influence the printed circuit and the possible problems that may appear may be slight discolorations due to the high