Seektronics

PCB board, mainly in order to make full use of the board, so as to improve production efficiency.   Relatively simple is the rule of the plate frame of the plate.     As shown in the picture above, the board frame is square, and it is easy to assemble four boards, among which, only one board needs wiring, while the other boards only need the frame, which the sample factory will handle (it is better to copy the components and lines in the past, so that it is not easy to make mistakes).   The lines in the mechanical layer of the regular plate frame are cut by the Vcut knife, but the plate thickness of 0.4mm cannot be cut by the Vcut knife.   What if it's an irregular frame?   In the picture above, stamp holes (with five circles) are used. I used a circle with a radius of 0.4mm and a line width of 0.127mm. The spacing between the circles is about 10mil, not too wide. In this way, the plate factory will drill holes in the rings, so that the hand can easily break it.   For the lines in

PCB board industry partners know that the copper-lined board in the insulation material post a copper foil, and then baked dry. If you look carefully, you will see that there will be shrinkage in the drying process, the stress in all directions will be generated, which is the source of stress, followed by the purpose of PCB drilling before baking the board, in fact, the main moisture, PCB drilling before baking the board is to remove moisture from the board to reduce internal stress; pressed together behind the print resistance welding, including characters, etc. need to bake. Before shipping and packaging, there is also a process of baking the press board, also to remove moisture, after baking the board in terms of warpage has a relatively large improvement.   The baking mentioned above can eliminate the internal stress of the PCB board, which is to stabilize the size of the PCB. Its most significant advantage is that it can make the water in the pad dry after baking, strengthen the w