Reflow welding may have some effects on SMT machining quality: 1. PCB deformation caused by temperature gradient; 2. Component damage caused by temperature gradient, 3. Oxidation in reflow welding process
There are five technological means to improve the pass-through rate: (1) optimize the design of steel mesh, (2) select the appropriate solder paste, (3) optimize the printing operation, (4) optimize the temperature curve, (5) adopt tooling and improve the
In order to do a good job in PCBA processing, we need to do the following three things: first, solder paste should be used during SMT processing; second, the SMT equipment must be checked frequently during SMT processing; third, we should always pay atten
Factors affecting SMT processing quality: 1, equipment, 2, technology, 3, PCB circuit board, 4, steel mesh (template), 5, furnace temperature curve setting
It is mainly because the thin welding paste is more likely to form a larger cavity, or the thickness gap of the weld is too small, leading to the volatiles of the welding machine more difficult to discharge through this "channel", so that the pr...
PCB light board shipment inspection items: 1, basic inspection, 2, electrical performance test report, 3, metallographic section analysis report, 4, impedance test
The most important steps in SMT patch processing are summarized as seven steps: first, graphic alignment, second, Angle of scraper and steel mesh, third, scraper force, fourth, printing speed, fifth, printing gap, sixth, separation speed of steel mesh and
Requirements on the minimum length of tape for SMT patch proofing materials: In the production process of SMT patch, materials are mainly packaged by pallets and tape braiding. Such packaging is convenient for taking materials from the SMT patch machine a
The cost is reflected in four aspects of assembly: 1, auxiliary materials: tin paste, tin strip, flux, UV glue, through the furnace fixture, 2, smt patch processing, 3, DIP plug-in after welding hours, 4, assembly test: test fixture, test equipment, test
In the through-hole PCBA assembly technique, the component is inserted into the drilled hole and a strong solder joint is formed by wave soldering. Usually, through - hole components are inserted manually
Polarity means that the positive and negative electrodes or first pins of a component are in the same direction as the positive and negative electrodes or first pins on the PCB(printed circuit board). If the component does not match the direction on the P
Ways to improve SMT machining efficiency: (1) Aim for fewer component changes, (2) Focus more on PCBA assembly, (3) You should know every step of the SMT process
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