For the new PCB board that has just been brought back, we must first roughly observe whether there are any problems on the board, such as whether there are obvious cracks, short circuits, open circuits, etc. If necessary, you can check whether the resistance between the power supply and the ground wire is large enough….
At present, electronic equipment used in various electronic equipment and systems still uses printed circuit boards as the main assembly method. Practice has proved that even if the circuit schematic is designed correctly, improper design of the printed circuit board will have an adverse effect on the reliability of electronic equipment. For example, if two…
The key tasks of my country’s copper clad laminate (CCL) industry in the future development strategy, specifically speaking, should be to work hard on five major categories of new PCB substrate materials, that is, through the development and technological breakthroughs of the five major categories of new substrate materials, to improve my country’s CCL cutting-edge…
With the increase in the output switching speed of integrated circuits and the increase in the density of PCB boards, signal integrity has become one of the issues that must be concerned about in high-speed digital PCB design. Factors such as the parameters of components and PCB boards, the layout of components on PCB boards,…
Differential lines are a very important part of signal lines in PCB design, and the signal processing requirements are also quite strict. Today, I will introduce the principle of differential signals and their processing methods in PCB design. 1.What is differential signal Differential transmission is a signal transmission technology. Different from the traditional method of…
In electronic design, after the project schematic design is completed and compiled, the PCB design needs to be carried out. After the board size, stacking design, and overall partition conception are determined, the first step of the design is to place the components in their appropriate positions. Layout is a crucial link. The quality of…
Test before power on After a circuit board is soldered, when checking whether the circuit board can work normally, it is usually not directly powered on, but the following steps should be followed to ensure that there is no problem in each step before powering on. 1.Whether the connection is correct Check the schematic diagram….
In today’s high-tech era, electronic products are everywhere, and they have brought great convenience to our lives. However, with the popularization and integration of electronic devices, electromagnetic interference (EMI) problems have become increasingly prominent. 1.EMI Electromagnetic Interference Industry: Ubiquitous Challenges Electromagnetic interference, that is, the interference caused by electromagnetic noise or electromagnetic radiation to the…
Flying probe test: replace the needle bed with a probe, use multiple motor-driven, fast-moving electrical probes to contact the pins of the device and perform electrical measurements. During the production process of PCB boards, it is inevitable that short circuits, open circuits and leakage and other electrical defects will occur due to external factors. In…
Audio interface is an audio jack, that is, an audio interface, which can be divided into Audio in interface and Audio out interface. Audio interface is a device that connects microphones and other sound sources to computers, and it plays a role of bridging the connection between analog and digital signals. The other routing requirements…
This article explores the latest innovations in assembled printed circuit boards, highlighting advancements in design, materials, and manufacturing processes that enhance performance and reliability in modern electronics.
It’s no secret that designers are squeezing more performance out of printed circuit boards. Power densities are rising, and with them come higher temperatures that can wreak havoc on conductors and dielectrics. Increased temperatures—whether from I2R losses or environmental factors—affect thermal and electrical impedances, leading to erratic system performance, if not outright failure. Differences in…
1.Conditioning Hole Conditioning This word refers to the “adjustment” or “adaptation” of the self in a broad sense, so that it can adapt to the subsequent conditions. In a narrow sense, it means that the dry board and hole wall are made “hydrophilic” and “positively charged” before entering the PTH process, and the cleaning work…
1. Dry film masking holes appear broken Many customers believe that after the occurrence of broken holes, the film temperature and pressure should be increased to enhance the bonding force. In fact, this view is incorrect. Because the temperature and pressure are too high, the solvent of the resist is excessively volatilized and dried. The…
Benefits Of Flex PCB Panelization In Modern Electronics Flex PCB panelization has emerged as a pivotal technique in the realm of modern electronics, offering a multitude of benefits that enhance both the manufacturing process and the performance of electronic devices. As the demand for more compact, efficient, and versatile electronic products continues to rise, the…