In the automatic insertion line, if the printed board is not smooth, it will cause inaccurate positioning, and the components can not be inserted into the holes of the board and the surface mount pad, and even break the automatic insertion machine. The board on which the components are installed is bent after welding, and the component feet are difficult to cut neatly.

The typical process of PCB processing uses the "graphic plating method". That is, a layer of lead-tin corrosion resistance layer is pre-plated on the copper foil part that needs to be retained on the outer layer of the board, that is, the graphic part of the circuit, and then the rest of the copper foil is corroded by chemical means, which is called etching.

With regard to the "through hole window" and "through hole cap oil" point (PAD and VIA usage distinction), many customers and design engineers often ask what this means when placing a system order, which option should I choose for my file?

Immersion gold and gild is the process often used in PCB circuit boards, many engineers can not correctly distinguish the difference between the two, and even some engineers think that there is no difference between the two, this is a very wrong view, must be corrected in time.

Although the current EDA tools are very powerful, as the PCB size requirements are getting smaller and smaller, the device density is getting higher and higher, the difficulty of PCB design is not small. How to achieve high PCB flux and shorten the design time?

PCB Multilayer circuit board design tools are mainly used for layout creation software. During the time period in which the circuit is designed, this software is used to automate various tasks that are performed manually in advance by the EDE. A wealth of tools are provided with excellent features and options for designing PCB.

The complexity of the circuit board production process and the complexity of process maintenance, especially in chemical wet treatment, makes it difficult to prevent the foaming defects of the board surface. Based on many years of actual production experience and service experience, the causes of the foaming of the copper plating board surface of the circuit board are briefly analyzed, hoping to help the industry peers!

PCB regardless of the internal quality, the surface is similar. It is through the surface that we see the differences, and these differences are critical to the durability and functionality of the PCB throughout its life.

First-class production comes from first-class design, the production of panel technology can not be separated from your design, the engineers please design according to the conventional production process details.

PCB surface treatment process changes are not very large, it seems to be a relatively distant thing, but it should be noted that long-term slow changes will lead to great changes. In the case of increasing calls for environmental protection, the surface treatment process of PCB will definitely change dramatically in the future.

PCB printed circuit board processing how to remove tin? Generally speaking, there are six methods: direct blowing of hot air gun, tin suction disassembly method, medical hollow needle disassembly method, electric soldering iron brush with disassembly method, increase solder melting disassembly method, and multiple copper wire tin suction disassembly method.

Due to the increasing popularity of advanced manufacturing technologies, it has become easy to achieve the smallest PCB size. Although PCB manufacturers have experimented with a variety of sizes, materials, and technologies, they also rely on Gerber files to oversee the production of printed circuit boards.

The printed circuit board design process includes drawing circuit schematics, planning printed circuit boards, component packaging, component layout, automatic wiring, manual adjustment, saving output, etc.

The general machine uses a variety of models, functions of integrated circuits (ics), and several large or very large scale integrated circuits as the core, with other integrated circuits and discrete parts circuit, to form the circuit of the whole machine. These core integrated circuits may contain the functions of one or several system circuits.

PCB wiring refers to laying electrical roads to co-sign components. In PCB presets, wiring is the closing step to complete the preset product. What are some common rules for PCB wiring.

The four-layer circuit board can be divided into a top layer, a bottom layer and two intermediate layers. General Principles for Layout and routing of multi-layer PCB board The general principles that PCB designers need to follow during the circuit board routing process.