The printed circuit, PCB -printed circuit board- is an important electronic component used in any electronic equipment.
The printed circuit board can be planted or assembled manually or automatically, automatic soldering and automatic inspection of electronic components guarantee the quality of electronic equipment, improve work productivity and reduce costs.
Our printed circuit boards are used for a variety of purposes, safety and surveillance, power supply, telecommunications, automotive electronics, medical appliances and instruments, national defense and industrial equipment, etc.
outer layers; Multilayer sandwich boards with additional internal layers of copper and insulation board printed of circuit Manufacture are called multilayer. PCBs can be single-sided (one layer of copper), double-sided (two layers of copper on both sides of an insulating board), or multi-layered (outer and inner layers of copper alternating with insulating layers). Among the multi-layer PCBs, the most common
of copper foil tracks, determined by its 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 multi-layer board, an internal layer may be mostly solid
contact with possible loose wires. For its function of helping to prevent solder shorts, the coating is called a solder mask. Soldermask is generally green in color board printed Manufacture of circuit 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
