placa imprimata of a reference indicator for the components on the PCB. Graphics and text on a circuit board's PCB are usually printed with a non-conductive permanent epoxy ink. The color is usually white, although other colors are available: yellow, black, blue, red. Screen printing is used to render useful
in color placa imprimata but can have different colors: green, red, blue, white, black. Only the outer layers need to be 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
imprimata placa informal usage, the term "printed circuit board" most commonly means "printed circuit assembly" (with components). Components are generally soldered to the PCB both to connect them electrically and to fix them mechanically. Printed circuit boards are used in almost all electronic products and some electrical products. Currently, the production and assembly of printed circuits are