In case of tinning, corresponding measures should be taken: 1. Adjust welding process parameters: 2. Replacement of solder alloy: 3. Replacement of components: 4. Check the surface treatment of PCB board and components: 5. Inspection equipment
PCB board bending or warping is usually caused by: 1. Temperature change: 2. Uneven plating: 3. Uneven PCB board thickness: 4. Improper plate size 5. Uneven welding: 7. Improper PCB board processing: 8. Material problems of PCB board 9. Design problems of
In the study, it is found that PCB design mainly has four aspects of interference: power supply noise, transmission line interference, coupling and electromagnetic interference
How should PCBA processing plant do a good job in component procurement: 1. PCBA component procurement channels; 2. PCBA component quality control; 3
Factors affecting PCB price: First, PCB materials used in different price diversity, second, PCB production process used in different price diversity, third, PCB itself difficulty caused by different price diversity, four, different customer requirements
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 public power cables and ground cables on the two-sided SMB should be placed near the edge of the SMB and on both sides of the SMB. The power layer and ground cable layer can be installed at the inner layer of the multi-layer SMB, and the cables, power
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
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
During design, WPC can be designed according to product characteristics to reduce shadow areas and avoid collision parts.
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
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