A Guide To The Manufacturing Of PCB Boards

By Andrea Davidson

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Everywhere you look, or go, in these modern times, there is always technology there with you. It is true to say that technology has made people's lives so much easier. Many people are happy to use this technology, but few understand the processes behind it. At the core of most of the technology is the field of electronics. For electronics to work someone, somewhere, has been responsible for the manufacturing of PCB boards.

Electronics can appear very confusing to the average person. So much so that often people feel that the reason why something works is not an important factor providing that they can make the item do what they need it to do. Happily there are individuals who do know these things.

Just consider how many things you use each day that utilise electronics in one way or another. For these items to work properly the electronic components have to be set out in a particular order. Once the cover is removed from one of these items it becomes easier to see how this is fulfilled.

On opening up one of these items you will immediately notice a flat board. This will normally either be brown or green in colour, and is called the printed circuit board. You will notice that there are metallic tracks on one side. These tracks are used to conduct power only where it is meant to go.

Printed circuit boards will be one of two basic types. The type used is often decided by the function that the customer wishes to achieve, and the space available to fit all of these components in. The different types are known as through board and surface mount.

Whichever type is being produced there are a couple of things that the operative requires, good eyesight and a steady hand. Without either one, creating one of these printed circuit boards gets much more difficult. The other elements, such as identifying the components and how they should be fitted can be taught.

The through board is the most likely type that people will come across. It does have certain advantages. The components are all situated on the other side to the metallic tracks. The component's legs are fed through the board, hence the name. The legs are soldered to the metal tracks which conducts power through the component and also holds them securely in place. The legs are clipped to prevent them sticking trough too far, and possibly becoming a short circuit. The components are of a size that enable easier handling.

Surface mount boards have their components soldered directly to pads connected to the tracks. These components are a lot smaller, and it is best to use magnification and a good light source. Using these items it makes fitting the components somewhat simpler, but remember that these components can be fitted to one or both sides of the board.

When either of these circuit boards have had all of the components securely fitted they are given a conformal coating. This helps to provide additional protection. This explanation will help the average person understand the processes used in the manufacturing of PCB boards.




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