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Ordinary circuit board and multi-layer PCB circuit board, silly and indistinct

Shenzhen Inno Circuit Co.,Ltd | Updated: Jun 20, 2018

Ordinary circuit board and multi-layer PCB circuit board, silly and indistinct


If we can see people with multi-layer PCB circuit boards and ordinary PCB circuit boards with the naked eye, then I will not say that the appearance of PCB multi-layer circuit boards and PCB double-sided circuit boards can't be seen if we do not pay attention to the difference. The appearance is basically the same, some people may ask! Multi-layer circuit board is not a lot of layers? How to see is also a board ah? Offer is relatively high.

 

    Originally, the number of layers of multilayer circuit boards is in the inner layer, 1-2 layers are used to inspect one-layer PCB single-board, two-layer PCB double-side boards, and 3-48 layers are called multi-layer PCB boards. The higher the number of layers, the greater the unit price. High, because the inner layer of the line is to be pressed together, the technical content of the pressing process is not high, the cost of the machine is relatively high, if you want to rent equipment vendors, then the day is 1000-5000 this quote, buy it then At least 2 million - 10 million! In the buyer is not worthwhile, after all, high-tech, follow-up repairs have a certain degree of difficulty, technical content equal to the cost, we all know that the quality of multi-layer circuit boards is very strict. In the previous process scrapped a little so that all pcs specification PIN are scrapped. If the process is scrapped and there is a little bit of abnormal quality, then the previous process is equivalent to doing nothing.

 

So how do we distinguish a piece of product is usually PCB double-sided or multi-layer PCB circuit board?

1. The greater the number of layers, the greater the shadow in the sheet;

2.PCB double panel is the line and ink at both ends;

3.PCB double-sided PCB board is invisible line, is a pure sheet, pure glass fiber;

4. If the board is a mold punch, you can insert the board edge by hand to make the board easy to identify;

5. Subtle dark shadows can be seen inside the multilayer PCB board board, which is a bit dim and deep to see the lines;

6. Multi-layer PCB board material is usually used KB material, the contrast is smooth, especially after the cleaning process can see it;


7. In the end how to distinguish several layers of several layers, to the precise data, then only through the manufacturer's IM inspection or development engineer's drawing board records.