Discussion on the influence of scraper on PCBA processing
In the process of electronic machining, the smaller the Angle of the scraper affects the vertical force of the solder paste, the greater the vertical component of the force.
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How does SMT plant clean PCB after surface mounting and welding
Significance of PCB cleaning after surface mounting welding: 1. PCB cleaning after surface mounting welding can prevent the occurrence of electrical defects. 2. PCB cleaning after surface mounting and welding can eliminate corrosive substances. 3. The PCB
What should we pay attention to when applying PCBA three-proof paint?
Different welding resistance film due to the composition, content is different, and coating bonding force is not consistent, so the adhesion degree of coating and printed board welding resistance film and coating molecular polarity is closely related to t
PCB proofing design cloth pass rate and design efficiency skills
To provide you with effective skills to improve PCB design spread rate and design efficiency: 1, determine the number of PCB layers, 2, design rules and restrictions, 3, component layout, 4, fan out design, 5, manual wiring and key signal processing, 6, a
How to achieve low cost PCB proofing design and layout
One of the major trends of PCB design is gradually inclined to open source hardware mode and control system, another is the explosive growth of development board, PCB design tools are now being used in more and more development board design.
What might be the cause of pcb failure
In the aspect of PCB analysis, it is mainly used to measure the thermal stability or thermal decomposition temperature of PCB materials. If the thermal decomposition temperature of the substrate is too low, PCB will explode or delamination failure phenome
When pcb design matters needing attention complete book
In high-speed logic and circuit design, for some key signals, such as clock, control signals, to add the source end matching resistance, so that the signal will be reflected back from the load end, because the source impedance matching, the reflected sign
How to check PCB quality after welding? What are the methods
The optical method uses scanning to find defects in each layer, and the electronic test usually uses a flying probe to check all connections. Electronic tests are more accurate at finding short or open circuits, but optical tests can more easily detect in
How to avoid pcb design errors
When designing PCB, how to avoid errors: first, data input stage, second, post-layout inspection stage, third, post-wiring inspection stage
PCB various surface treatment advantages and disadvantages comparison
Here are several circuit board surface treatment is currently more common process, I can only say that there is no the most perfect surface treatment, so there are so many choices, each of the surface treatment has its own advantages and disadvantages, th
Analysis of the causes of pcb board anomalies such as white spots, microcracks, bubbles and delamination in PCB manufacturing process
Image of local separation caused by local expansion between layers of substrate or between substrate and conductive foil or between substrate and protective coating.
How can PCB wiring become better
How to improve PCB wiring level: 1, common ground processing of digital circuit and analog circuit, 2, signal wiring on the electrical (ground) layer, 3, connection leg processing in large area conductor, 4, role of network system in wiring, 5, power supp
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