PCB Technical - PCBA chooses counterfeit electronic components to harm

PCBA processing is a general term, which includes (PCB circuit board manufacturing, PCB proofing patch, smt patch processing, electronic component procurement) these parts.

One, the selection of electronic components.

The selection of electronic components should fully consider the actual total area of the SMB, and use conventional electronic components as much as possible. Do not blindly pursue small-size electronic components to prevent increased costs. IC devices should pay attention to the pin shape and pin spacing., The QFP with a lead pitch of less than 0.5mm should be carefully considered. It is better to directly choose the PCB factory parts of the BGA package. In addition, the packaging form of the electronic components, the size of the terminal electrode, the solderability of the PCB, and the reliability of the smt device, Temperature tolerance (such as whether it can meet the needs of lead-free soldering) should be considered.

After selecting electronic components, a database of electronic components must be established, including installation dimensions, pin dimensions and relevant information of the SMT manufacturer.

Second, the choice of plates.

The base material should be selected according to the use conditions of the SMB and the mechanical and electrical equipment characteristics. The number of copper-clad surfaces of the base material (single-sided, double-sided or multi-layer SPCBAMB) is determined according to the SMB structure. According to the size of the SMB, the total unit area Carrying the quality of electronic components and determining the thickness of the substrate board, the cost of different types of materials varies greatly. When selecting SMB substrates, the requirements of electrical equipment characteristics, Tg (glass transition temperature), CTE, and flatness should be considered Factors such as the ability of hole metallization, price and other factors.

Counterfeit products appear in almost every industry, so it is not surprising that counterfeit components have become a problem in the electronics industry, although the government, companies and other stakeholders have been working hard to prevent counterfeit and shoddy PCB products through a variety of methods. Enter the market, but they can sometimes successfully enter the market. These fake parts may cause product performance problems and safety hazards.

Products containing counterfeit electronic components may be dangerous. If the counterfeit parts fail, it may harm the person who uses it. This may also cause the products used to not work properly. In this case, the forged components may indirectly cause damage. Injury, for example, counterfeit items can cause a short circuit, which can cause a fire, and of course, this can have disastrous consequences.

Electronic components are essential for many different fields. Chip factories include aerospace, medical industry, military industry, communication PCBA circuit boards, etc. In these industries, if the equipment fails, the consequences may be fatal. If devices cannot operate normally due to the use of counterfeit integrated circuits and other electronic parts, they may not provide accurate test results, leading to incorrect and correct diagnosis, and they may even directly harm the patient. If the aerospace components contain counterfeit electronic components, then They may fail, endangering the lives of pilots and crew members, and no one wants a mobile phone that may explode in their hands.