In the printing industry, photo platemaking is often used to produce pictures on paper. That is, by taking photos, the picture of the bottom plate, etched on the copper plate or zinc plate, with this copper plate or zinc plate, you can print a lot of pict
It is characterized by simple production process, low cost, short cycle, good wear resistance, electrical conductivity, can make the single panel to achieve high density, miniaturization, lightweight, suitable for TV, telephone, video recorder and electro
Printed circuit board develops from single layer to double panel, multilayer board and flexible board, and continuously develops to high precision, high density and high reliability direction.
When disassembling, melt the pin solder with the soldering iron, cover the pin with the needle in time, then remove the soldering iron and rotate the needle, and pull out the needle after the solder solidifies.
especially since The State Council issued Several Policies to Promote the High Quality Development of the Integrated Circuit Industry and Software Industry in the New Era this year, the integrated circuit industry has become a new industry tuyere.
The SMT lead-free process should also be designed and tested in accordance with the principles of simple selection, good quality, short process route, fewer types of process materials and low cost of SMT patch processing
PCB industry is technology-intensive and capital-intensive, but it is still labor-intensive. A large number of automation equipment needs manual operation and assembly line operation. A medium-sized PCB enterprise has thousands of employees.
Common ceramic-based boards are alumina circuit board, beryllium oxide circuit board, aluminum nitride circuit board, silicon nitride circuit board.
Some circuit board shape is special, different shape, through the board can be more effective use of PCB substrate area, reduce waste, save costs.
Circuit board processing in welding welding sequence is particularly important, so circuit board welding experts will choose to welding difficult low welding points, so that the welding circuit board is more flat.
it is very important to have a good heat dissipation treatment on the circuit board. The heat dissipation of PCB circuit board is a very important link, then PCB circuit board heat dissipation skills are what, let's discuss the next.
Positioning holes on printed circuit boards should be represented by special graphic symbols. When the requirements are not high, the printed circuit board can also be used in the larger assembly hole instead.
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