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What is Multilayer Printed Circuit Board?
The printed circuit board determines the difficulty and processing price of the process according to the amount of the copper layers. The normal PCB is single -sided and double -sided, but high-end electronic products, due to product space design factors restrictions, in addition to dividends outside the surface wiring, multi-layer lines can be superimposed inside. During the production process, after making each layer of lines, then the optical equipment positioning and pressing together, so that the multi -layer lines are superimposed in a printed circuits board. Commonly known as Multilayer printed circuit board. All PCB greater than or equal to 2 layers can be called a multi-layer PCB. Multi-layer circuit boards can be divided into, multi-layer rigid PCB, multi-layer flex PCB, multi-layer rigid-flex PCB.
-What is Multilayer Printed Circuit Board?
The definition of multilayer PCB is a PCB made of three or more conductive copper foil layers. They are displayed as several double -sided circuit boards and stick to the thermal insulation layer with them. The entire structure is arranged so that the two layers can be placed on the surface of the PCB to connect to the environment. All electrical connections between layers are implemented through Vias, such as vias shops that are blind and buried through holes. The application of this method then generates a highly complex PCB.
Multilayer PCB is attributed to changes in the continuous development of the electronics industry. Over time, the function of electronic devices has gradually become more complicated and requires more complicated PCB. Unfortunately, PCB is restricted by problems such as noise, strange capacitors, and skewers, so it is necessary to follow some design constraints. These design precautions make it difficult to obtain satisfactory performance level from a single or even double-sided PCB . Therefore, multilayer PCB is born.
Multilayer PCB packages the power of doubled-layer PCB into a small part of the size, which is becoming more and more popular in electronic products. They have various sizes and thickness to meet the needs of its continuous expansion applications. The variant range ranges from four to twelve layers. The most commonly of the layer has an even number, because the odd number layers may cause problems such as distortion in the circuit, and no longer have cost-effective production. Most applications require four to eight layers. Although applications such as mobile devices and smartphones tend to use about twelve layers, and some professional PCB manufacturers have the ability to produce nearly 100 layers of PCB. However, multilayer PCB is rare because they cost higher.
Although they do tend to produce more expensive and dense labor, multilayer PCB is becoming an important part of modern technology. This is mainly due to the many benefits they provide, especially compared with single-layer and double-layer varieties.
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Abierta nov. 10, 2025 - 18:56
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