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
Composition of PCB manufacturing production cost: The production cost of PCB products refers to the total of direct materials, direct labor, direct labor and other direct or indirect costs actually consumed in the production process
PCB hard board and FPC soft board difference: 1. Rigid PCB: often used as motherboard, cannot bend, 2. Flexible board: FPC also known as flexible circuit board, can be bent
PCB layout skills: 1, arrange the position of each functional circuit unit according to the circuit flow, so that the layout is convenient for signal flow, and make the signal as far as possible to maintain the same direction, 2, the core components of ea
The reasons for the appearance of virtual welding in PCBA processing are as follows: 1. Oxidation of pad and component pins; 2. Less tin; 3. The temperature is too high or too low, 4 welding paste melting point is low, 5, solder paste quality problems