PCB Manufacturing Process – The functional part

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Author: jenny

PCB is Printed Circuit Board; it is made up of copper by etching copper clad. It is also called printed wired board (PWB). Raw Printed Circuit Board is Printed Circuit Board without components and with components it is called PCB assembly i.e. raw Printed Circuit Board with electronic components. There are basically two types of raw Printed Circuit Board: 1. Single sided board with single track of copper layer. 2. Double sided board with two tracks of copper layer. There are also multi layer printed circuit boards that have more than two layers of copper. The material used is thin copper foil for conductive layer and insulating material for the base. There are several methods for producing Printed Circuit Board such as: • Copper Etching. • PCB Milling. • Screen Printing. PCB milling is least used nowadays as it is not that effective for the mass production of Printed Circuit Boards and hence is used for prototype production i.e. production in limited numbers. Copper etching method is most widely used across the world but the screen printing method is very cost effective as compared to others, although it provides less quality products. The whole manufacturing process of Printed Circuit Board is: • First of all the quotation is prepared according to the one’s requirement of the Printed Circuit Boards. All the requirements such as number of tracks of conducting layer, price range etc. must be quoted. Then this quotation is sent to the manufacturer. • Once the manufacturer receives the quotation he goes for pre engineering of the data received. • Then the CAD/CAM department checks it for mistakes. • If any mistakes are found the customer is immediately intimated. Once the mistakes are resolved, and everything is correct, then the engineers start working on it. Flow of PCB Manufacturing Process is: Setup -> imaging -> etching -> Multilayer Pressing -> Drilling -> Plating -> Masking -> Finishing -> Quality Control -> Testing. For more details on PCB assembly and manufacturing you can visit http://www.pcbassemblydepot.com/. This site provides information about PCB Manufacturing Process.