The impedance of PCB circuit board refers to the parameters of resistance and reactance, which is an obstacle to AC. The impedance is essential in pcb circuit board product. So why do PCB boards have to do impedance?
The PCB circuit should consider electronic components, considering the electrical conductivity and the signal transmission performance , so the impedance is the lower the better.
PCB circuit board has to go through the process of copper deposition; tin plating, soldering and so on, and the material in these links must ensure the resistivity is low. It can ensure that the overall impedance of the circuit board is low enough to meet the quality requirements of the product,then it can run normally.
Tin plating of PCB circuit board is the most prone to problems, it is the key to affect impedance. The biggest defect of tin coating is its discoloration, poor brazing property, which will lead to difficult welding of circuit board, and high impedance will lead to instability of performance.
There will be various signal transmissions of PCB circuit boards. If the circuit has to increase frequency in order to increase its transmission rate, if the circuit is different because of etch, laminated thickness, circuit width and other factors, it will cause the impedance to be changed. The distortion of the signal leads to the deterioration of the circuit board, so it is necessary to control the impedance in a certain range( pcb etching)
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: email@example.com