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Home > News > What is the reason for the use of multi-layer boards for high-speed PCB design?
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What is the reason for the use of multi-layer boards for high-speed PCB design?

Multilayer boards are recommended for high speed PCB design. First, the multi-layer board distributes the inner layer exclusively for power and ground, and therefore has the following advantages:

·The power supply is very stable;

· The circuit impedance is greatly reduced;

• The wiring length is greatly shortened.

What is the reason for the use of multi-layer boards for high-speed PCB design?

In addition, from the perspective of cost, when the same area is used for cost comparison, although the cost of the multilayer circuit board is higher than that of the single-layer circuit board, if other factors such as miniaturization of the circuit board and convenience of noise reduction are taken into consideration, the multilayer is considered. The cost difference between a board and a single layer board is not as high as expected. According to the data we know, when calculating the area cost of the board, the area of the double-layer board can be about 462mm2 per day, and the board of the 4th board is 26mm2, which means that the same circuit is designed. The board can be used in the same area as the two-layer board, so the cost is the same as that of the two-layer board. Although batch multi-layer will affect the unit cost of the board, but there is no 4 times price difference, if there is more than 4 times the price difference, as long as you can try to reduce the board area, and try to reduce to the double-layer board 1 /4 or less.

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