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For some customers, the design of PCB is seriously nonstandard, and they simply can’t tell whether it’s pad or via. Sometimes conductive holes are treated with pad, and sometimes key holes are treated with via. The design confusion leads to more errors. According to incomplete statistics, the problems caused by nonstandard design account for more […]

Gas reflow welding is also called condensation welding. VPS refers to SMT SMD welding equipment that uses the latent heat released by the vaporization of fluorocarbon liquid as a heat medium to provide heat for welding. First-phase reflow thick film circuit. 1. The principle of gas-phase reflow soldering is that the liquid containing fluorocarbon can […]

In fact, the micro-assembly technology of SMT proofing and small batch processing is a comprehensive technology of assembling various micro-components of electronic circuits on high-density multilayer interconnected substrates by micro-welding and SMT chip processing to form micro-electronic products. I. Multi-chip module The multi-chip component in SMT package is a kind of high-tech electronic product derived […]

At the beginning, the manufacturing process of steel mesh in Changsha SMT small batch processing factory is mainly to make plates by photography, and then chemical etching is used. In addition, laser cutting or electroforming is used to make plates for steel mesh in Changsha SMT processing. Changsha smt proofing briefly introduces the advantages and […]

SMT material throwing is usually called material throwing, that is to say, after the suction nozzle of the mounter picks up the material in the material tray, the material is thrown out in the process of moving to the PCB mounting position. Generally, the reason for this problem is that the suction nozzle pressure is […]

Consideration of the aperture size of PCB proofing pad When PCB proofing plug-in component pads, the pad size should be appropriate. If the pad is too large, the solder spreading area will be larger, and the solder joints formed will not be full, while the copper foil surface tension of the smaller pad will be […]

There are many kinds of resistors, such as carbon film resistor, cement resistor, metal film resistor and wire wound resistor. Special resistors include piezoresistors, thermistors and photoresistors. Different types of resistors have certain differences in their characteristic parameters, and the points to be considered in circuit use are also different. For engineers who are new […]

In PCB proofing, a layer of lead-tin resist is pre-plated on the part of the copper foil that needs to be kept on the outer layer of the board, that is, the graphic part of the circuit, and then the rest of the copper foil is etched away chemically, which is called etching. As the […]

The development of modern science and technology leads to the miniaturization of electronic components and the extensive application of SMT technology and equipment in electronic products. SMT manufacturing device has the characteristics of full automation, high precision and high speed. With the improvement of automation, higher requirements are put forward for PCB design. PCB design […]

China is the global electronic product manufacturing center and the global electronic product consumption market, which provides sufficient market depth for the domestic PCB industry. At the same time, domestic PCB enterprises still have obvious competitive advantages due to the advantages of complete PCB industry chain and sufficient labor resources.   What should aluminum substrate […]