Category Archives: Uncategorized

Circuit board is in English, literally translated as “printed circuit board”, as well as circuit board, PCB, PCB, etc., which is an important part of electronic equipment in the modern technology era. The appearance of circuit board provides various functions for electronic products and realizes the integration of circuits. It mainly consists of pads, holes, […]

Impedance control is essential for high-speed circuit design to achieve the best transmission efficiency. Impedance calculation is related to factors such as plane, line width, dielectric thickness, dielectric constant, etc. In the calculation process, the values of each factor should be adjusted according to impedance requirements to find the best solution. This paper introduces the […]

With the rapid development of electronic industry, the increase of wiring density of high-speed pcb, the speed of frequency and switch, the corresponding requirements of outsourcing painting of high-speed PCB design are becoming more and more strict. In the outsourcing design of high-speed pcb, multilayer boards are usually used for design, so it is inevitable […]

At the beginning of the new PCB outsourcing design, because most of the time is spent on circuit design and component selection, in the PCB layout stage, due to lack of experience, the consideration is not comprehensive enough. If enough time and energy are not provided for the design of PCB layout, it may lead […]

When designing pcb, it is necessary to pay attention to such a basic situation, that is, how many wiring layers, grounding planes and power planes are needed to achieve the required functions of the circuit, and the establishment of the layers of wiring layers, grounding planes and power planes of PCB is related to the […]

Disclaimer: The following methods are not applicable to all designs. Facing different designs, engineers need to choose the appropriate methods to deal with them. In the process of PCB design, high-multilayer, high-density designs are often encountered, so cross-segmentation is inevitable in this case, as shown in the following figure: This is an HDI project, which […]

As electronic products continue to be miniaturized, as more functions are loaded into smaller devices, the heat dissipation requirements of these systems also increase. This is especially true for PCBs operating at high current. Especially the power supply system with heavy load, such as lithium-ion batteries used in electric vehicles, needs a power management system […]

With the improvement of the integration of IC devices, the miniaturization of devices and the increasing speed of devices, the EMI problem in electronic products is becoming more and more serious. From the point of view of EMC/EMI design of system equipment, dealing with EMC/EMI problems in PCB design stage of equipment is the most […]

Copper sulfate electroplating plays an extremely important role in PCB electroplating. The quality of acid copper electroplating directly affects the quality and related mechanical properties of the electroplated copper layer on PCB board, and has a certain impact on the subsequent processing. Therefore, how to control the quality of acid copper electroplating is an important […]

Multi-layer PCB is used as the “core force” in the fields of communication, medical treatment, industrial control, security, automobile, electric power, aviation, military industry, computer periphery, etc. With more and more product functions and denser lines, it is relatively difficult to produce. At present, domestic PCB manufacturers that can mass-produce multilayer circuit boards often come […]