Date：2022-11-24 17:11:22

The quality inspection report is a written report that reflects the quality of products and projects after the quality inspection and quality supervision of products and projects are carried out according to the requirements of standardization and analysis and research. It is the result of quality inspection and the carrier of quality information feedback. In economic activities, it has become a management means to control the quality, a basis for maintaining the normal economic order of society, safeguarding the legitimate rights and interests of users and implementing arbitration. The third party inspection report is the result obtained through the quality inspection of products and equipment to ensure the product quality system standard. View >>

Date：2022-11-23 15:26:59

The testing and screening service of electronic components is also called the secondary screening of electronic components. The secondary screening of electronic components refers to the screening of electronic components by the user or its entrusted third party on the basis of the screening of component manufacturers. Secondary screening is a series of targeted tests based on various failure modes of electronic components, so as to effectively eliminate early failures. View >>

Date：2022-11-23 15:19:35

Component analysis refers to the technical method of analyzing the components of products or samples through scientific analysis methods, and conducting qualitative and quantitative analysis on each component. In order to help you understand deeply, this article will summarize the relevant knowledge of material composition testing. If you are interested in the content to be covered in this article, please read on. View >>

Date：2022-11-22 18:26:15

It is reported that conventional electronic components need to be screened twice to meet the precision requirements of high-end industries such as aerospace, military and high-precision electronic products. At present, most of the first screening business is completed by the manufacturers themselves, and various professional testing institutions mainly undertake the second screening business. The components and parts shall be selected in a comprehensive way, reasonably selected according to favorable conditions, simplified circuit design to improve reliability, and derated use to improve reliability. View >>

Date：2022-11-21 17:38:37

The detection of electronic components is actually the detection of electronic components and electronic devices. Electronic components refer to products that do not change their components during production and can work without energy, such as resistance, capacitance, etc. It mainly includes performance and appearance quality, which directly affect the reliability of SMT components. This paper collects and sorts out some materials, hoping to be of great reference value to all readers. View >>

Date：2022-11-18 14:27:21

Wave soldering is a necessary equipment in the welding of electronic product plug-ins. However, faults caused by poor wave soldering, faulty solder joints and poor conductivity occur from time to time. To solve the problems, it is necessary to know the main causes of wave soldering defects. In order to help you understand, the following contents are organized by the Core Creation Testing Network for your reference. View >>

Date：2022-11-18 14:26:35

When PCBA is welded, there are usually many requirements for PCBA plates, and the plates must meet the requirements before they can be welded. The application of special processes immediately brings about the requirements for PCB boards. If PCB boards have problems, it will increase the difficulty of PCBA welding process, which may eventually lead to welding defects, unqualified boards, etc. Welding is a very important process in PCB proofing. What are the requirements for PCB welding environment? View >>

Date：2022-11-17 16:00:08

When a mechanical part loses its working ability or fails to meet the design requirements due to some reasons, it is called failure. The results of failure analysis can not only predict the failure form of parts, but also serve as the basis for selecting materials for parts. At the same time, they can provide instructive data for reasonably formulating the manufacturing process of parts, optimizing the structural design of parts, and developing new materials and processes. This paper collects and sorts out some materials, hoping to be of great reference value to all readers. View >>

Date：2022-11-17 15:57:59

In PCBA processing, the welding methods mainly include reflow welding, wave soldering and manual welding. What is the difference between wave soldering and manual soldering? Now, what are the differences between wave soldering and manual soldering in PCBA processing? View >>

Date：2022-11-16 16:04:23

Wave soldering refers to the soldering of melted soft solders into solder peaks as required by the design by spraying them through an electric pump or an electromagnetic pump. It can also be formed by injecting nitrogen into the solder pool, so that the printed boards with components in advance can pass through the solder peaks to realize the soft soldering of mechanical and electrical connection between the component terminals or pins and the printed board pads. Next, the technical requirements and operation precautions of the down wave soldering process will be described in detail. View >>