Coupled with these miniaturized PCB design rules, the problem of crosstalk noise becomes more and more acute, and the problems of crosstalk, switching noise, and ground bounce are exacerbated by the ball-grid arrays and other high-density packages themsel
PCB board drawing design is a complex and simple process. For the same circuit or the same instrument, even if the circuit with exactly the same components and parameters, the result may be very different due to the different component layout design and e
Protel is the most convenient to use, the fastest to operate, the best humanized interface auxiliary tool in the circuit aided design (EDA) industry at present, and also the most used EDA tool in China. This paper takes Protel99 SE as a design tool to ana
The bubbling of the circuit board is actually the problem of poor binding force on the board, and by extension, the surface quality of the board, which contains two aspects.
PCB hole via process is one of the most critical links in the whole process of PCB manufacturers, which determines PCB quality and electrical connection performance, and is also an important node for batch scrapping or rework.
In the early stage of lead welding, the temperature was not very high, and the original PCB board could be tolerated. Since the temperature was increased after lead-free welding, powder was added to the PCB board to strengthen the PCB's resistance to temp
The drilling process can be completed by inputting the drilling coordinate program in the PCB file on the drilling machine and adjusting the corresponding drilling speed. In the via process, drilling accuracy, position deviation and bit fracture must be m
The PCB board should be marked with the Mark point, the specific position: it can be a round or square pad on the diagonal of the board, and do not mix with the pad of other devices.
The output value of the global electroplating PCB industry accounts for the proportion of the total output value of the electronic components industry growing rapidly.
Another 6-layer board layout is signal, ground, signal, power, ground, signal, which enables the environment required for advanced signal integrity design. The signal layer is adjacent to the grounding layer, and the power layer is paired with the groundi
At present, there is almost no complete set of detection equipment for multi-layer coil short circuit on the market, and most of this work still relies on manual completion. PCB board with large aperture is manually put the board on the detection equipmen
The cost calculation of PCB industry is the most special and complex in all industries. From opening material, pressing plate, forming, to FQC, packaging, completion and storage, it is necessary to input the material cost, labor cost and manufacturing cos
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