Under a certain temperature and humidity environment and potential difference, electrochemical migration is easy to occur between adjacent lines and solder joints, resulting in insulation failure. In the case of serious dust pollution, the deposition of dust particles in electronic equipment changes the critical humidity on the surface of circuit board, thus changing the failure [...]
Sometimes customers often wonder what the process flow of PCB is, and even some peers who are new to the industry are confused. When making an inquiry, customers often say that the board is very simple, and you can tell the price. In fact, the process of PCB depends on the number of layers, vias, [...]
Hot summer, to say what to pursue, nature is a cool wind. Especially in the outdoor without air conditioning, the hand-held fan, which quickly became popular with high appearance and convenience, has become people's "summer artifact". Walking on the road, you can always see young people holding small and lovely portable fans, and the cool [...]
1、 Single panel type: ① Wiring board ② Antenna board ③ Plug plate ④ Battery board ⑤ Light strip ⑥ Touch screen board (silver paste) Features and uses: ① Wiring board: it is used to connect the side of the machine and when the line is not long enough. The reverse folding board is easy [...]
PCB wiring skills 1. The edges of the input and output terminals shall be parallel to each other to avoid reflection disturbance. If necessary, ground wire shall be added for isolation, and the wiring of two adjacent layers shall be perpendicular to each other, parallel and simple to produce parasitic coupling. 2. Add coupling capacitance [...]
PCB planning process includes making circuit schematic diagram, planning PCB, component packaging, component layout, active wiring, manual adjustment, saving output, etc. The following is the planning process of printed circuit board. Planning process of printed circuit board (1) Principle of making circuit diagram. This is the basis of circuit board planning, which mainly completes the [...]
The actual printed circuit board is composed of copper foil layer, printed data layer and silk screen layer. The copper foil layer includes the signal layer and internal electrical layer in the software design, which mainly completes the electrical connection characteristics of the circuit. Generally, the number of layers of copper foil is defined as [...]
Three proofing paint is a specially formulated coating used to protect circuit boards and related equipment from environmental erosion. Three proofing paint has good high and low temperature resistance; After curing, it forms a transparent protective film, which can protect the circuit from damage under the conditions of chemical substances (such as fuel, coolant, etc.), [...]
PCB, namely printed circuit board, is one of the important components of the electronic industry. Almost every kind of electronic equipment, from electronic watches and calculators to computers, communication electronic equipment and military weapon systems, as long as there are electronic components such as integrated circuits, printed boards should be used in order to make [...]
The PCB circuit board takes the insulating board as the base material and is cut into a certain size. At least one conductive pattern is attached on it, and holes (such as component holes, fastening holes, metallization holes, etc.) are arranged to replace the chassis of electronic components of previous equipment and complete the interconnection [...]