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Multilayer PCB has more than two conductive copper layers which mainly consist of inner layer cores, prepreg layers and copper foils and they’re melted together through heat and pressure. Lamination process is one of the key to control good quality of multilayer PCB, this process requires specific heating and pressure for specific periods of time based on materials used to ensure the PCB board is made properly.

The multilayer PCB is the development of the double sided PCB with increasing complexity and density of components, they allowed the designers to produce highly complex and compact circuits and further development of blind and buried via hole technology has pushed these limits even further. With the requirements of higher precision in various applications, the demands of multilayer PCB keep increasing continuously in recent years. The typical applications of multilayer printed circuit boards include Computers, Data storage, Cell phone transmission, GPS technology, satellite systems and so on.

The benefits of multilayer PCB

● Increased flexibility
● Higher assembly density
● Smaller size(considerable savings on space)
● Easier incorporation controlled impedance features
● Reduces the need for interconnection wiring harnesses(Reduces overall weight)

A-TECH is an experienced multilayer PCB manufacturer which own complete multilayer PCB manufacturing process in house from inner layer, vacuum lamination to surface finishes, it brings us more advantages in the competition of global market shares for multilayer printed circuit boards on quality, price and lead time. Currently the proportion of multilayer PCB we manufactured is more than 65%.

General Specification for multilayer PCB in A-TECH
Layer Count	4~30 Layers
Material Available	FR4, High Tg FR4, PI, Teflon, Rogers.
Max board size	550*650mm
Board thickness	0.4-5.0mm
Finished copper thickness	0.5-6oz
Min trace width/spacing	3/3mil
Min hole size	0.15mm
Colour of Solder Mask	Green, Blue, White, Black, Yellow, Red.
Colour of Silkscreen	White, Black, Yellow.
Surface treatment	HASL, HAL(Lead free), OSP, Gold Plating, Immersion Gold/Tin/Silver, Carbon, Peelable Mask.

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A series of tests for A-TECH single layer pcb have been carried out. It has strictly tested in terms of the performance of the circuit board, plugs, voltage, housing, etc. With wide compatibility, the product works perfectly with other devices

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A-TECH electronic manufacturing services companies go through a polishing process once it is processed by CNC machines. It is gauged, calibrated and then polished to a perfect finish in a wide range of colors and designs. It has the LED indicator to show the charging state

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A-TECH single layer pcb has a good design. Its elements are programmed to respond to climatic factors, to improve energy efficiency or reduce solar heat, or for aesthetic reasons such as an art installation. The product causes no noises during operation

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The workmanship of A-TECH single layer pcb carefully conducted. It should go through timber cutting, tenoning, trepanning, pressing, or high-speed milling processes. The product has been certified under CE, FCC, UL, and BS

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The package of A-TECH single layer pcb will be done with professional materials. It is packaged with hardened carton, foam, cardboard, or wooden box to protect it in an all-around way to minimize transportation damage. The product features the desired safety with fuses installed both ends of the input and output

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electronic manufacturing services companies is equipped with an advanced heat exchanger to greatly improve the heat exchange efficiency of the evaporator. Moreover, it has a variety of protection functions. It is of good durability and reliable safety.

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