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What Are Multi-layer Boards?

What is a multi-layer board made of?


Multilayer board

Multilayer board


Multi-layers, or multi-layer PCBs are circuit boards made up of more than two electrical layers(copper layers)superimposed on each other. The copper layers are bonded together by resin layers (pregreg). Multi-layer boards have at least three layers of conductors, in which two layers are on the outside surface while the remaining one is incorporated into the insulating boards. The electrical connector is commonly completed through plated through-holes, which are transverse to the boards. Multi-layer boards represent the most complex type of printed circuit boards.


Where is the application of multilayer board?


The application of multilayer board

The application of multilayer board


Their cost is relatively high, owing to the complexity of the manufacturing process, lower production yields and difficulty of re-working on them. Hence,multilayer boards are widely used in professional electronic like computers and military equipment.


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