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Surface Mount SMT PCB Assembly Service

Release time: 28/10/2018

Surface Mount SMT PCB Assembly Service One of the most popular technologies and processes in the electronics assembly industry today. It is a type of leadless or short lead surface mount component (referred to as SMC/SMD, Chinese called chip component) mounted on the surface of a printed circuit board (PCB) or other substrate surface. Circuit mounting technology for soldering and assembly by means of reflow soldering or dip soldering.

In the era of low cost and high efficiency, surface mount SMT PCB assembly service is widely favored due to high assembly density, small size and light weight of electronic products, and the size and weight of patch components are only about 1/10 of that of traditional plug-in components. . After the surface mount SMT PCB assembly service is generally used, the electronic product is reduced by 40% to 60%, and the weight is reduced by 60% to 80%. At the same time, the surface mount SMT PCB assembly service has high reliability, strong seismic resistance, low solder joint defect rate, good high frequency characteristics, reduced electromagnetic and radio frequency interference, easy automation, improved production efficiency and reduced cost by 30%~50%. Save on materials, energy, equipment, manpower, time, etc.

The industrial composition of surface mount SMT PCB assembly service is relatively simple, printing (red glue / solder paste) --> inspection (optional AOI automatic or visual inspection) --> placement (first small device and then large device :High-speed patch and integrated circuit mounting)-->Detection (optional AOI optical/visual inspection)-->Welding (welding by hot air reflow)--> Inspection (division of AOI optical inspection appearance and function) Sex test test) --> Maintenance (using tools: soldering station and hot air desoldering station, etc.) --> Sub-board (manual or split machine for cutting), of course, to ensure product. safety, each production process is It is necessary to strictly control the quality of each link.

The process of surface mount SMT PCB assembly service can be simplified to a single panel: solder paste on the mounting and plug pads; SMC/SMD placement; TMC/TMD insertion; reflow soldering. Double panel: Solder paste-reflow soldering process to complete soldering of double-sided chip components; then solder paste on the B-side via component pads; reverse PCB and insert via components; third reflow weld.

Although the surface mount SMT PCB assembly service is relatively cumbersome in terms of process composition and manufacturing, it is considerable that its cost is relatively cheap, and other considerable advantages are currently favored by consumers in the Chinese market and even in foreign markets. Especially in the electronic information industry, the appearance of surface mount SMT PCB assembly services is the gospel of people.