PCB signal integrity problem
The signal integrity problems of PCB mainly include signal reflection, crosstalk, signal delay and timing error.
The signal integrity problems of PCB mainly include signal reflection, crosstalk, signal delay and timing error.
It has been proved that the reliability of electronic equipment will be adversely affected even if the circuit diagram is designed correctly and the printed circuit board is not designed properlyAt present, the printed circuit board is still used as the m
The value of the matching resistance should be determined by the maximum value of the output drive current and the absorption current of the integrated circuit.
The chemical residue in the gold settling process can be left in the hole where the plug hole is not sufficient, causing problems such as weldability. Moreover, tin beads may be hidden in the hole, which may splash out during assembly or actual use, causi
To prolong the life of devices and prevent failures, effective heat transfer management is very important. Overheating conditions on the board can not only speed up the failure mechanism, but also cause the device to become too hot to handle and in some c
There is no doubt that condensation will severely test the insulation resistance of the coating. There are many coating products that can withstand this kind of test, so you can avoid these problems by choosing the right materials at the beginning of the
its melting point is much higher than that of the tin solder, which results in the reduction of the weldability of the surface of the welding pad, and the non-wetting of the welding pad and the solder climbing to the welding end of the device are easy to
Power integrity directly affects the signal integrity of the final PCB board. Power supply integrity and signal integrity are closely related, and in many cases, the main cause of signal distortion is the power system.
The positioning of NC milling is to use the positioning pin to locate the printed board to be processed to the working table of the milling machine, so as to conveniently and accurately process the shape of the printed board.
The PCB thermal cycle temperature is summarized in Table 1 below according to the five grades classified according to the different position of the vehicle.
Circuit board negative circuit or copper surface is transparent, positive circuit or copper surface is black
With the continuous improvement of automobile safety, comfort and intelligence, PCB (printed circuit board) products are also facing the development of intelligent and green needs.