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Standard PCB Production Process(One) to Avoid Scratching

Scratching is the most common and difficult problem in PCB factories. We can only control this defect at the lowest proportion by reminding ourselves to pay attention to the operation specifications at all times. How to avoid scratching during PCB manufacturing? Process 1: Cutting – fillet grindingReasons for Scratching: improper operationHow to avoid(Standard Process)? Check …

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What is The Meaning of Silk Screen on PCB Board?

There are many silk screen letters on the PCB, such as R109, c113, Q105, d206, etc. What do these letters / numbers mean? The letters on the PCB board represent the abbreviation of electronic components, and numbers often follow the letters, which are also meaningful. The Letters on PCB Board PCB Alphabet Meaning Table Letter Representative …

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How to Select The Process When Placing an Order for PCB Impedance Board?

What is Impedance Circuit Board? For PCB factories, boards with impedance lines are commonly known as impedance boards. The follow image is one of the common impedance boards. Generally, impedance is only made for high-speed boards, and the line width tolerance of impedance lines should be controlled to 5%-10% in the production process, while the tolerance …

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Which PCB Process to Pick? Immersion Copper, Black Hole, Shadow

More than 80 years have passed since Paul Eisner officially invented PCB manufacturing technology in 1936, and PCB has developed rapidly and has become an indispensable foundation for the electronics industry. Although the PCB generally only accounts for 5~10% of the cost of the finished circuit board, the reliability of the PCB is far more …

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Vias Knowledge in HDI Board

Drilling is a very important part in the manufacturing process of PCB. The quality of drilling greatly affects the functionality and reliability of PCB. However, many customers still don’t know the meanings and characteristics of the through holes, blind holes and buried holes in high-density HDI boards. Let’s have a look. Vias First of all, …

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How to Connect The FPC And PCB?

With the development of electronic products, the technical demand of using FPC soft board to connect to PCB is higher and higher. But how to connect them? Following we will introduce several common connection and welding methods between FPC and PCB in the industry. FPC ( “flexible printed circuit board” or “flexible circuit board”) is …

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PCB EMC Design: Design of Reference Plane

 For the actual PCB, the best “ground” should be a complete and common ground plane, which can reduce the crosstalk between the wires on the PCB and reduce the electromagnetic interference. Incomplete Ground Plane Ground plane segmentation usually occurs on digital analog mixed PCBs. Both the ground plane and the power plane are the same …

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