This is not a method, but it is an experience and it is the most accurate. We can determine the number of layers of PCB by the circuits of PCB cards and the location of the components. In fact, the number of PCB layers affect the PCB card a lot. This allows the PCB to have 3 or 4 signal layers, 1 ground layer, and 1 or 2 power layers. This allows the signal lines to be long enough to reduce interference with each other and to have sufficient current supply. However, a four-layer PCB design is enough for a typical board, while a six-layer PCB is too wasteful and it does not have much performance improvement.
The arrangement of the interlaminar semi-cured sheet should be symmetrical, for example, for a 6-layer PCB,the thickness between 1-2 and 5-6 layers should be the same as the number of the semi-cured sheet, otherwise it is easy to warp after lamination.(pcb company)
Process of pcb manufacturing:
Our Company is UL,ISO9001,ROHS and GJB9001B certified.
Packing and Shipping:
1. How to Get a quotation?
For PCBs,pls send us the Gerber File.For PCBA,pls send us the Gerber file and BOM(Bill of Materials)
2. What is the MOQ?
No MOQ.1 pcs is ok.
3.What is the lead time?
For PCB orders,the lead time is 2 to 10 days.For PCBA orders,the lead time will be 15 to 30 days.
4.Will the boards be tested before shippment?
Yes,all PCBs will be tested by Flying Probe or E-test.For PCBA,we will have AOI,X-ray,and functional test
Email us to get a quote: firstname.lastname@example.org