pcb design

In this Article I have drawn flowchart of PCB design flow.In this article I have tried to explain the PCB design steps.  Now I am going to explain the terms which commonly used in PCB designing.... 1. Layers Everything which you  draw is on layer. Each layer has different physical properties. For example Top layer is used to draw the component layout, Bottom layer or Inner layer are used for making connection between components and many more are also present. 2. Footprint Footprint is the collection of pads and outline which make an individual component. PCB design software comes with a library which contains footprints of different components but the number of footprints that are available is limited. As we know today technology is changing and size of components is reducing, so sometimes we have to make the footprint of the component. 3. Solder mask You all have seen the green, red, blue or shiny coating on the PCB. This coating is known as solder mask. Masking i

Actually there are lot of companies which do not have their PCB layout designer. They usually hire them for a particular project for a month or two or depend on their requirement. so for layout designer that particular company is called client. The designer has to design the board as per the client requirement. Basic requirements for designing a layout for a layout designer are following .. Schematic Diagram - It's a drawing showing all significant components, parts or tasks of a circuit, device, flow process or project by mean of standard project. It  depends on the hardware engineer whether they are giving the hard copy or soft copy of schematic to the layout designer. if it's a soft copy than layout engineer can directly start the work without creating schematic in EDA tool like OrCad , PADS logic etc.. But if the client has provide hard copy of schematic to the layout engineer than the Layout engineer has to draw it using OrCad or any other tool which his client

   As electronics moved from vacuum tubes and relays to silicon and integrated circuits, the size and cost of electronic components began to decrease. Electronics became more prevalent in consumer goods, and the pressure to reduce the size and manufacturing costs of electronic products drove manufacturers to look for better solutions.   Thus was born the PCB.        PCB is an acronym for  printed circuit board . It is a board that has lines and pads that connect various points together. In the picture above, there are traces that electrically connect the various connectors and components to each other. A PCB allows signals and power to be routed between physical devices. Solder is the metal that makes the electrical connections between the surface of the PCB and the electronic components. Being metal, solder also serves as a strong mechanical adhesive.   PCBs may be classified in many different ways according to their various attributes. One fundamental structure c