The Printed Circuit Boards are the most important entity of electronics these days. The PCBs used in past were quite simple and were only limited to a single layer. The PCBs today are complex and are known as multi-layer PCB. Those PCBs having limited functionalities are of single layer while those having multi-functioned capacities are composed of multi-layers. The sophisticate PCBs are used in motherboards etc. The multi-layer PCBs have now become core ingredient of complex electronic circuitry.
What are Multi-Layer PCBs?
The multi-layer PCBs can be defined as PCBs which are being made with 2 or more layers of the conductive layers of foils. The conductive foils are appearing as various layers of the multi-sided circuit boards. The different layers are being laminated and then glued together but are heat protected with an insulation amid layers. The layers are placed in such a way that both sides of the PCBs are on the surface. Vias are the source for the electrical connections among different layers of multi-layer PCBs. The need for 4-layer PCB and higher layer PCBs was felt because of the expansion of electronics industry. The problems of PCBs such as noise, crosstalk, and stray capacitance were also solved with time and these days PCBs are free from all such problems. The best part is that the PCBs these days are having sophisticated design and beautiful way of traces which makes it attractive to have in the electronic appliances.
Key Advantages of 4-Layer and Higher Layer PCBs
The following are key advantages multi-layer PCBs.
- Small Size: The small size is making these PCBs of great importance because with technology the size of electrical and electronic appliances is getting small. The layered design of the PCBs is offering it a smaller size better for the electronic and electrical gadgets such as computers, smartphones, tablets, wearable, and laptops etc.
- Frivolous Assembly: As discussed, the 4 layer PCB and higher layered PCBs are smaller in size, therefore these PCBs are advantageous for the contemporary gadgets.
- Quality:One of the key features of such PCBs is its quality because of planning that is made in its creation. The results of these PCBs are outstanding and are having no problems in its entire lifetime.
- Durability:The multi-layer PCBs are durable as not only these are capable to withstand huge weights but are also capable to withstand high temperatures as well. There is always insulation among different layers in these PCBs which offers protection from damage.
- Flexible Design:These PCBs are now also having flexible PCB design, however all multi-layer PCBs are not flexible. The flexible 4-layer PCBs or higher layer PCBs can be of great use if mild bend is required. However, all such PCBs are not flexible.
- Power: These assemblies of such PCBs are having high density and are comprising of different layers making in to single layer PCB. These adjacent quarters are enabling the boards to be connective additionally and the electrical properties of these PCBs are allowing them more power.