The size of electronic devices is also getting smaller, which requires that the heat dissipation device itself should have certain heat dissipation conditions, and the heat dissipation device itself should also have certain heat dissipation conditions.
Engineers in the whole process of PCB design, in order to save time all want to ignore the table bottom of the whole board laying copper this link.
In the process of PCB production, the physical and chemical properties of each material are different, and the thermal stress residual generated in the pressing process leads to the bending and warping of the board.
Because the copper plating is not satisfied, the hole inside is empty, so it can not be directly punched on the above, to stagger a certain distance, and then hit a layer of empty.
Waste PCB board environmental protection recycling line is not only in each production link, each process in strict requirements, even every detail carefully pondering.
One of the important criteria for determining the requirements for recycling components is to know how to place components on the next board. One of the final standards is the type of component packaging required.
Lead and bromine are the hottest topics right now. Lead-free halogen will affect the development of PCB in many ways.
Three anti paint has satisfactory high and low temperature resistance; It cures into a transparent film that tries to protect the circuit from damage in such conditions as chemicals, shock, moisture, salt spray, moisture and high temperatures.
As time goes by, the size of the high-performance chip increases, the number of Solder Bump increases, and the substrate becomes thinner and thinner. In order to improve the reliability of the product, it is necessary to fill the bottom.
For RF microwave signal transmission line, or preferred to walk the arc line, or even to walk the "45° external miter" line
PCB processing belongs to OEM customers OEM products, not the same customer customized products are different, so PCB processing there is a variable price.
If the contact or line on the PCB circuit board needs to contact with the parts over and over again, with the passage of the product office hours, the appearance of the metal will reveal a certain wear, so the contact is not good.
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