Multi-layer circuit board factory: multi-layer circuit board layer identification method.
multilayer circuit board factory substrate is made of insulation, heat insulation, not easy to bend the material. The fine line material that can be seen on the surface is copper foil. Originally, the copper foil is covered on the entire circuit board, but part of it is etched during the manufacturing process, and the remaining part becomes a mesh of fine lines. Multilayer Circuit Board Factory These lines are called wires or wiring, and are used to provide circuit connections for parts on the circuit board.
Multilayer boards are now used on motherboards and graphics cards, which greatly increases the area that can be wired. Multi-layer circuit board factory uses more single or double-sided wiring boards, and puts a layer of insulating layer between each board and presses them together. The number of layers of multilayer circuit board represents several independent wiring layers, usually the number of layers is even, and contains the outermost two layers, the common multilayer circuit board is generally 4 ~8 layer structure. Many multilayer circuit board factory design layers can be seen by looking at the multilayer circuit board section. But actually this method is not convenient .
multilayer circuit board factory circuit connection is through buried hole and blind hole technology. Motherboards and display cards mostly use 4 layer multilayer circuit board , and some use 6 , 8 layer, and even 10 layer multilayer circuit board . If you want to see how many layers there are in PCB , multilayer circuit board factory introduces , which can be identified by observing the guide holes, because the 4 layers used on the main board and display card are the 1 and 4 layers of wiring, and the other layers have other uses (ground wire and power supply). Therefore, like the double-layer board, multi-layer circuit board factory pilot hole will penetrate multi-layer circuit board . If some guide holes appear on the front side of PCB board but cannot be found on the back side, then it must be 6/8 laminate. If the same guide holes can be found on the front and back of the multilayer circuit board , it is naturally the 4 laminate.
Multi-layer Circuit Board Factory teaches everyone another trick: point the main board or display card at the light source. If the position of the guide hole can transmit light, it means 6/8 laminate; On the contrary, it is 4 laminate.
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Multi-layer circuit board factory-multi-layer circuit board compatible design points description.
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Most electronic products are inseparable from the component is multilayer circuit board, and the production quality of multilayer circuit board factory directly determines the use of electronic equipment and the use of quality, there are many points in the circuit board processing related to the compatibility of multilayer circuit board, and then affect the quality of the circuit board. What are the main points of the compatibility design of multilayer circuit boards under the popular science?_multilayer circuit board_multilayer circuit board factory_blind buried hole circuit board_HDI board proofing
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In the graphic electroplating process method of multi-layer circuit board factory, because the circuit pattern is easy to produce side etching in the etching process, the tin-lead alloy plating part is in the air and produces a suspension layer, which is easy to fall off, resulting in a short circuit caused by bridging between wires. Multilayer circuit board factory uses infrared hot melt process method, can make the exposed copper surface get very good protection. However, when it is used for infrared thermal melting of multi-layer circuit boards, the phenomenon of delamination and foaming between layers of multi-layer circuit boards is very serious due to high temperature, resulting in a very low yield of multi-layer circuit boards. _Blind buried hole circuit board_multilayer circuit board
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Before designing multilayer circuit boards, the multilayer circuit board structure must be determined according to the circuit scale, circuit board size and electromagnetic compatibility (EMC) requirements. That is to decide whether to use a 4-layer, 6-layer or higher multilayer circuit board. Once the number of layers is determined, the multilayer circuit board factory has decided to determine the placement of the electrical layers in the multilayer circuit board and how to distribute different signals on these layers. This is the choice of multilayer circuit board factory laminated structure.
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