Both high-frequency board and FR4 board belong to one type of PCB circuit board, so what are the differences between the two? The price of Rogers high-frequency board and FR4 PCB are the first factors to be considered. The ultimate goal of PCB manufacturers is to launch high-performance PCB proofing services with the best performance. FR4 PCB proofing is the most affordable proofing on the market. If your design is suitable for the optimal conditions of low frequency and nominal temperature settings, it is wise to use FR4 PCB proofing services. If you need to apply to high-speed PCB boards or extreme temperatures, you have to choose the expensive Rogers PCB proofing.
Impedance stability is another difference between FR4 PCB and PCB high-frequency board. The dielectric constant of Rogers PCB substrates is one of the important factors that define PCB impedance and stability. The higher the dielectric constant of the Rogers PCB calculator, the higher the impedance stability. Although there is a cheap FR4 PCB for proofing, its maximum dielectric value is 4.5. Rogers PCBs have a higher and wider dielectric value range, such as a Rogers PCB with a dielectric constant from 2.2 to 16, and are used for high thermal applications where stable impedance is crucial.