What PCB circuit board Plate

PCB circuit board consists of pads, vias, mounting holes, wires, components, connectors, filling, electrical boundary and other components, electronic products to meet the short, small, light, thin, high-density assembly requirements, to promote the circuit multi-layer board, super multi-layer development. PCB circuit board main role is to connect components to use, using a wide range of PCB board, small toys, cell phones, radios, large aviation, railways and other large-scale high-end electronic products. Here are some PCB circuit board sheet:

PCB board sheet has FR-1, FR-2, FR-3, FR-4, CEM-1, CEM-3. "FR" is representative of "flame retardant", FR-1, FR-2, CEM-1 and FR-3 are essentially the same, only a slight error on the mass, but not the three plates produced multilayer wiring board, and FR-4 and CEM-3 can be produced multilayer wiring board, FR-4 is the most common PCB boards, is the most widely used sheet, the current line MILL many are using this plate so the relatively low price of FR-4 sheet of some, but the FR-4 plate also has a heat resistance, highest withstand temperatures up to 130 degrees.

PCB circuit board copper is one of the most important components of PCB circuit board, PCB circuit board copper thickness 18um, 25um, 35um, 50um and 70um, international copper plate thickness is divided into three 35um, 50um and 70um if needed thick electroplated copper foil is required to use thicker or other chemical reactions of the circuit board copper foil thicker.