SMT assembly manufacturability design Design for Manufacture (DFM: Design for Manufacture) is a design method. Its main idea is to consider the possibility, efficiency and economy of manufacturing at the same time when designing a product, that is, the manufacturability (or processability) of the product. . In this case of simultaneous consideration of design and […]
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What is the acceptable standard for the size of tin beads on the PCBA board surface? The following editor of Dongguan pcba processing factory will share for you: Acceptable standards for tin beads: 1. The diameter of the tin ball does not exceed 0.13mm 2. The number of tin beads with a diameter of 0.05mm-0.13mm […]
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Safety distance includes electrical clearance (spatial distance), creepage distance (creepage distance) and insulation penetration distance Electric clearance: the shortest distance measured along the air between two adjacent conductors or a conductor and the surface of the adjacent motor casing. Creepage distance: The shortest distance between two adjacent conductors or one conductor and the surface of […]
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The placement machine is one of the key equipment of the SMT production line, and it is one of the key factors that determine the degree of automation, assembly accuracy and production efficiency of the assembly system. With the further miniaturization and fine pitch of SMC/SMD, and the introduction of lead-free projects, the performance (precision, […]
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Solder paste printing is the most complex and unstable process in the SMT process. It is affected by multiple factors and changes dynamically. Even if the solder paste, printer, and printing parameters are unchanged, the printing quality may vary greatly. . Therefore, it is more and more common to set up inspection stations after printing […]
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1. Cleaning agent and its cleaning effect detection The main function of cleaning is to remove residual flux and residues on circuit components to prevent corrosion of the circuit. For SMA products, because of its high assembly density, small gaps between components and PCB, components and components, cleaning is more difficult. After SMA is soldered, […]
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Main test items and test methods of incoming adhesive for smt processing 1. Test items for adhesives The role of the adhesive is to ensure that the components can be firmly adhered to the PCB. Starting from the process requirements of SMT, it should have suitable viscosity, low slump, fast curing, moderate bonding strength, high […]
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SMT assembly quality is the abbreviation of SMT product assembly quality. It is a description of the degree to which the inherent characteristics involved in the SMT product assembly process and results meet the requirements. It generally refers to the assembly design quality, assembly raw materials (components, PCB, solder paste and other assembly materials) quality, […]
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The development trend of SMT processing and assembly quality measurement and control technology A-967
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The development trend of SMT processing and assembly quality measurement and control technology 1. Automation development trend SMT products are often micro and small products. The assembly and manufacturing process of SMT products is a micro-manufacturing, precision manufacturing, and high-speed manufacturing process, and has a fairly high degree of automation and production efficiency. Correspondingly, there […]
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Types of AXI detection technology and principles and characteristics of AXI technology A-968
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Types of AXI detection technology and principles and characteristics of AXI technology AXI detection technology type In recent years, AXI inspection technology and its equipment have developed rapidly, from 2D inspection to 3D inspection in the past. Some systems have SPC statistical control functions, which can be connected with assembly equipment to realize real-time monitoring […]