What is the following three pieces of plate, the kind of plate how good. Every time you draw the PCB issued to proofing, I only said to CEM-1, what do not know anything, just graduated from the white is poor, ask the boss he did not say, as if I know, he did not eat The same, I can not directly contact the manufacturers. It 's better to be able to elaborate on the sheet problem
Only from the picture, it is difficult to judge, such as the picture should be a single panel, the first white substrate may be rogers some models may also be cem-1. The third type may be glass fiber cloth fr-4.
In fact, the use of plate to see the nature of the circuit and the use of the environment. For example, there is no special circuit can be used fr-1.fr-4.cem-1 can be. High circuit frequency can be used Rogers series plate, more than 5g frequency should be used ptfe microwave plate.
I have a lot of friends in the factory to do pcb engineers, you can introduce your understanding.
Plate you should know more about what circuit should be used for what plate and so on.
The first is the CEM-1 sheet
The second possibility for the CEM-1 sheet is also possible for 22F plates, the color can not be distinguished because the CEM-1 sheet has two colors of white and light yellow
The second is FR4 glass plate
I do PCB sales, plate this piece is a better understanding
It is easy to distinguish between the three are ordinary single-panel, the first is CEM1 material (also may be ceramic materials, but CEM1 material more likely), the second is FR1 material (or FR2, in short, Material), the third is FR4 material.
As for the plate manufacturers and specifications of the plate, because the picture is not very clear to see, only know the second for the KB (Kingboard), if there is a real board can be easier to distinguish.
The first is a ceramic material, the second is halogen-free bar, the third is commonly used FR-4. Because the plate production field a lot, I can only give the industry argument, please adopt or ask me
