PCB copying board design and manufacturing is from the subtraction method to addition method, this paper mainly describes the PCB subtraction method and addition method related concepts and manufacturing process, for your reference to learn!
PCB copy board design step two: Draw your own definition of non-standard device package libraryIt is suggested to put the devices drawn by yourself into a dedicated design file of PCB library.
Printed circuit board will appear in almost every kind of electronic equipment, is the basis of the entire electronic products.
Many people misunderstand the concept of PCB copying board. In fact, with the continuous development and deepening of the copying board industry, today's concept of PCB copying board has been extended in a wider range.
For PCBS that have been identified as keyboards in the device, these key characteristic parameters and indicators must be centralised and checked from the head in addition to regular inspection. To the toes.
How to ensure the quality of PCB processing: one: pressure (patch height) - patch pressure (height) should be appropriate, two: correct components - required assembly position number, three: accurate position - the end or pin of the components and pad gra
The onboard antenna needs to be placed at the edge of the board and where the antenna area is located. Copper foil exclusion zones are required for all layers, and the antenna should be separated from the ground plane of the PCB.
PCB circuit boards play an important role in life today. It is the foundation of electronic components and the highway. In this regard, the quality of the PCB is critical.To check the quality of a PCB, a number of reliability tests must be performed. The
The dimensional stability of multilayer PCB is the main factor affecting the positioning accuracy of the inner layer. The effect of thermal expansion coefficient of substrate and copper foil on the inner layer of multilayer PCB is also considered.
Rich experience in copying board on the basis of guaranteed success rate, but also can finish the work of copying board faster. High efficiency and high success rate make subroutine electronics highly praised in the industry.
The oxidation of sunken gold plate is the contamination of the gold surface by impurities. The impurities attached to the gold surface change color after oxidation, which leads to the oxidation of the gold surface.
With the reduction of the aperture, the original debris that has no effect on the larger aperture, pcb board factory, such as brush debris, volcanic ash, once remaining in the hole, will make the chemical precipitation of copper, copper plating will lose
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