Multilayer PCBs: The Amazing Invention of Electronics

Printed circuit boards, abbreviated as PCBs have become an integral part of the electronics world. They provide the users as a relief from the abstruse process of point-to-point wiring and circuit complexities. They have surely relieved us from buying plenty of wires and electronic equipment and have made our job much simpler by putting them on a short board. From day-to-day general electronic products to medical equipment, dedicated service equipment, and high-reliability products, everywhere we can see the undefeated usages of PCBs. So we can call it as a wonder of the modern electronics.

In accordance with the rapid growth of PCB usages, there has been also a transforming change in PCB production. Many electronic equipment manufacturers in china produce PCB as well, where there are some of them dedicating themselves solely to PCB production. There are various techniques of producing a frisky circuit from a lump of electronic components and a board. This wide variety of PCB manufacturing arts has been able to produce a number of different types of PCBs. The PCBs can be comprised of several layers. So on the basis of a number of layers included the PCBs have been categorized into two major parts such as one layered PCB and Multilayer PCB.

The multilayer PCB is different from double layer PCB, where both of the Sides of the PCB are printed with electronic component and wires. The multilayer PCBs are consisted of at least 3 layers of conductive materials.

The preparation of multilayer PCBs is somehow different than others. The alternating layers of core materials are pressed together to make the multilayer PCBs. The process is performed carefully to make sure that no air is stuck between the layers. The conductors are purely coated by resins for safety purpose. An adhesive element is used to stick the different layers together. The adhesive is properly melted before using and once it is used between the layers, it is cooled down. Multilayer PCBs are highly beneficial and popular among engineers. They can serve multiple tasks at one hand.

• The increased flexibility: If proper connections are made according to the need of a particular project the multilayer PCBs can be used to produce a wide variety of circuit combinations, thus increasing the flexibility of usage.

• Density: The increased number of layers can be a great step towards assembling a variety of different electronic components thus increasing the assembly density.

• Reducing the complexity: The multilayer PCBs have greatly reduced the job of wiring the components individually.

• Less space: As the components are tied together in a single PCB with multiple layers, the space of the circuit is reduced.

Source: http://www.htdcircuits.com/multilayer-pcbs--the-amazing-invention-of-electronics.html