During heat treatment, the material's mechanical strength, dimensional stability, adhesion, water absorption, thermal cracking, expansion performance and other aspects are different, high density products are obviously better than ordinary PCB substrate.
The pressing process of printed circuit board is the main process of generating thermal stress. Similar to the pressing process of copper clad plate, it will also produce local stress caused by inconsistency in the curing process. The printed circuit boar
The following is a calculation example of the position accuracy of the intermediate component of PCB board in the following two positions (the position accuracy calculation of the length direction is only taken as an example, and the width direction is no
With moisture-proof, anti-corrosion, shock-proof, protection function. Now, you know why to apply three anti-rubber on the circuit board, have the need of small partners do not quickly act.
For the fabrication of circuit boards, the more layers, the more complex the process, the higher the failure rate of course, the higher the cost, so the multilayer board can only be used for advanced circuits.
the color of the circuit board has attracted the attention of the industry, mainly because the color design of many high-end circuit boards are made of green, so people slowly believe that the color of the circuit board is green must be high-end.
It is the latest development in PCB testing technology. It uses a laser beam to scan the printed board, collect all the measurements, and compare the actual measurements with preset qualifying limits.
There are two basic principles to determine the distance between the multilayer capacitor power layer and the edge of the board in the capacitor design of multilayer PCB board, and to solve the distance between the printing strip: 20-H method and 3-W meth
In case of abnormal tools during transportation, it is necessary to ensure the safety of personnel and goods, and do a good job in isolation and reporting.General principles to be followed in the layout design of multilayer printed boards
Some people have more information about their designed PCB board, so they like to test all the components at once. In fact, it is better to do it bit by bit.
PCB design based on PCB design software can also be regarded as a software development process. Software engineering pays most attention to the idea of "iterative development" to reduce the probability of PCB errors.
PCB design, not only technology, but also art, art involves a lot of subjective factors, so engineers should also pay attention to improve their own culture.
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