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

July 7, 2022 July 7, 2022 / Impedance Board, PCB

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

June 21, 2022 July 7, 2022 / Black Hole, Immersion Copper, PCB Process, 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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Comparison of 9 PCB Surface Treatment Processess

June 15, 2022 June 21, 2022 / PCB Surface Treatment

The basic purpose of PCB surface treatment is to ensure good solderability or electrical performance. Since copper in nature tends to exist in the form of oxide in the air, it is unlikely to remain original copper for a long time, so it needs other treatment. Comparison of 9 Current Mainstream PCB Surface Treatment Processes …

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How to Judge PCB Board Deformation?

June 6, 2022 June 6, 2022 / PCB board deformation

After reflow soldering or wave soldering, PCB may be deformed, such as bending and warping, or even cracked and layered. However, problems such as cracking and delamination are rare, while deformation problems such as plate bending and warping are common, and often lead to abnormalities such as empty welding, faulty welding, monument erection and offset. …

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Vias Knowledge in HDI Board

May 27, 2022 May 27, 2022 / HDI Board, Vias

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?

May 17, 2022 May 18, 2022 / FPC, FPC Connection, 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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Design of PCB Grounding Structure

May 7, 2022 May 7, 2022 / Grounding, Grounding structure design, PCB

General selection principle of grounding mode For a given equipment or system, it is regarded as a high-frequency circuit when the length of the transmission line L > in at the highest frequency of interest (corresponding wavelength). On the contrary, it is regarded as a low-frequency circuit. According to the rule of thumb, for circuits …

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PCB EMC Design: Design of Reference Plane

April 29, 2022 April 29, 2022 / EMC Design, PCB, PCB EMC Design, 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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Grounding in EMC Design of PCB: Meaning, Purpose and Mode

April 24, 2022 April 24, 2022 / EMC Design, Grounding, PCB

Grounding is one of the important means to suppress electromagnetic interference and improve the EMC performance of electronic equipment. The correct grounding mode can not only improve the ability of the product to suppress electromagnetic interference, but also reduce the external EMI emission of the product. Is there a general grounding method for reference? The …

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Why Do PCB Boards Need Plug Holes?

April 7, 2022 April 7, 2022 / PCB Boards, Plug Holes

The development of electronic industry promotes the development of PCB, and also puts forward higher requirements for PCB manufacturing process and surface mount technology. The plug hole technology came into being. The plug hole of PCB circuit board is generally placed on the second layer with ink after the anti welding layer, so as to …

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