The decontaminated environment is very important to clean the PCB from copper laminate. The process involves removing away the copper to show up the design from the films. Laminate receives the copper that construct the PCB.pcb Substrate gives a strong platform for the PCB. The core material is epoxy resin and glass fiber known as substrate material. The basic structure of PCB is made of a laminate board. Now these photo films are printed on copper foil. Process 3 # : Inner layer printing: Photo resists and Copper The registration pins will fit in the registration holes. The films must have registration holes to sit accurately upon each other. This PCB alignment is achieved by adjusting the table on which the film sheets are fit, and after a small calibration of table the optimum alignment is attained. All these films must be aligned together to draw a PCB alignment. These films should be stored properly to avoid unnecessary contacts or fingerprints.Įach layer has its own film sheet. On the other hand, for outer layer, the black ink will be etched away and blank area is for copper. In case inner layer, the black ink represents the conductive copper track while the blank portion is non-conductive part. The plastic sheet come out from the plotter is the PCB printed with black ink. Plotters are very accurate in printing technology to give a highly detailed film of PCB design. These plotters will print circuit boards the films. The special printers used to print the PCB photo film is called “plotter”. The DFM (Design for Manufacturing) check is used to assure the minimum tolerance in PCB design. After the design is verified, it is sent to PCB fabrication house where a DFM check is performed. This algorithm is run by the designer to check for any errors in the design. The software has the user/designer defined algorithm that has key elements like track width, board edge spacing, trace and hole spacing and hole size. The extended Gerber delivers perfect output. The Gerber file is the 2D vector image file. The Gerber file is the standard file used by majority PCB fabricators to show the components of PCB layout like copper tracking layers, and solder mask etc. The most popular CAD PCB design software is Altium Designer, Eagle, ORCAD and Mentor PADS.Īfter the PCB design has been accepted for fabrication, the designer will generate a file from the design that is accepted by the PCB manufacturers. The designer must coordinate with the PCB manufacturer about the software used to layout the PCB design so that there will be no compatibility issues. The circuit designer draws schematics in CAD software that will be used to layout the PCB design.

Altium designer pcb layout part 1