China Wholesale Drc Pcb Quotes - 6 Layer ENIG Impedance Control PCB – Huihe
China Wholesale Drc Pcb Quotes - 6 Layer ENIG Impedance Control PCB – Huihe Detail:
Factors Determining Controlled Impedance
The characteristic impedance of a PCB is usually determined by its inductance and capacitance, resistance and conductance. These factors are functions of the physical size of the circuit, the dielectric constant and dielectric thickness of the PCB substrate material. In general, the line impedance of a PCB ranges from 25 to 125Ω. The PCB structure that determines the impedance value consists of the following factors:
Width and thickness of top and bottom copper signal lines
Width of top and bottom copper wires. The inner layer process range of the assembly and circuit is 0.5oz 3/3mil to 6oz 15/12mil copper signal line, and the outer line distance varies from 1/3oz 3/3mil to 6oz 15/12mil.
Core plate or semi-cured sheet thickness on both sides of copper wire
The semi-cured sheet is used as a bonding layer to hold all core boards together in a PCB. When designing the impedance control PCB, the thickness of the semi-cured sheet on both sides of the core board should be the same.
Dielectric constant of core PCB and semi-cured sheet
If the dielectric constant of the core plate and the semi-cured sheet are different, the impedance will also change. Therefore, the dielectric constant of the two should be the same.
Equipment Display
Automatic Plating Line
PTH Line
LDI
CCD Exposure Machine
Product detail pictures:
Related Product Guide:
High quality Very first,and Shopper Supreme is our guideline to offer the most beneficial company to our clients.Nowadays, we're hoping our best to be certainly one of the top exporters in our area to satisfy consumers additional will need for China Wholesale Drc Pcb Quotes - 6 Layer ENIG Impedance Control PCB – Huihe , The product will supply to all over the world, such as: Amman, Austria, Cape Town, We accomplish this by exporting our wigs directly from our own factory to you. The goal of our company is to get customers who enjoy coming back to their business. We sincerely hope to cooperate with you in the near future. If there's any opportunity, welcome to visit our factory!!!
By Andrew Forrest from Roman - 2018.06.19 10:42
The product manager is a very hot and professional person, we have a pleasant conversation, and finally we reached a consensus agreement.
By Grace from Slovenia - 2018.10.31 10:02