Types of printed circuit board
of 0.1-0.3 mm pe FR4 imprimat circuit substrat with a rigid printed circuit on an FR4 substrate. These printed circuits are used more and more lately, having the advantage of their flexibility. A PCB may have an inscription or screen printing that identifies components, test points or identification text. Screen printing does not
Printed circuit board assembly
printed circuit board populated with electronic components is called a printed circuit assembly, substrat FR4 circuit imprimat pe printed circuit board assembly, or PCB assembly (PCBA). In 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
Printed circuit board silkscreen
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 substrat pe circuit FR4 imprimat 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