1. Flexible circuit board electroplating (1) The surface of copper conductor exposed in the pretreatment of flex PCB electroplating after coating process may be contaminated by adhesive or ink, as well as oxidation and discoloration caused by high temperature process. In order to obtain a compact coating with good adhesion, the pollution and oxide layer…
Are you looking for any free PCB online design software for circuit design? With the best free PCB design software, we can test our designs first before implementing them to ensure that everything works the way we want, and then get them printed and assembled . Thus, you need the best PCB design tool to…
For those who study electronics, it’s natural to set ICT test points on circuit boards. How many people haven’t heard about the test site? How many people know the test point but don’t know the purpose of the test point? Basically, the purpose of setting test points is to test whether the components on the…
Printed circuits or also known as PCBs or electronic cards are the most important elements in all kinds of electronic devices with which they interact every day. In their manufacture, they exist in a considerable number of variations, shapes, colors, finishes and layers. Among all of them, Express PCB board has earned distinctive position due…
1. What is SLP? SLP (substrate like PCB) is the next generation of PCB board. It can shorten the line width / line distance from 40 / 50 microns of HDI to 20 / 35 microns, that is, the minimum line width / line distance will be shortened from 40 microns of HDI to…
Influence of high speed USB and full speed USB on daplink speed PCBSky has produced two daplink, which are based on the official STM32 and NXP lpc11u35 MCU. These two MCU are equipped with full speed USB, and the transmission speed of full speed USB is 12MB / s. The design of high-speed daplink-v4 is…
Within every single electronic device used today, there’s a printed circuit board (PCB) that makes it operate. The PCB is the heart of electronic devices, whether we’re talking about smart speakers for the home, your new intelligent thermostat, or the digital speedometer in your car. Of course, creating functional electronic devices requires much more than…
In the past, the hot sales of Apple’s TWS wireless headphones led to the booming orders of rigid flexible PCB. However, under the interference of various negative factors, the demand for rigid flexible PCB dropped sharply, and the performance in 2020 declined by 26.2% compared with that in 2019. Various PCB factories have adjusted their…
According to the experience of PCB manufacturing, this paper summarizes the contents that need to be checked after the completion of PCB design: 1. Check the high-frequency, high-speed, clock and other fragile signal wires to see if the loop area is the smallest, if they are far away from the interference source, if there are…
What is three proofing paint? Three proofing paint is a kind of coating with special formula, which is used to protect circuit board and related equipment from environmental erosion. The three-proofing paint has good resistance to high and low temperature; after curing, it forms a transparent protective film, which has superior insulation, moisture-proof, anti-leakage, shockproof,…
With the improvement of the performance of electronic products, PCB is constantly updated and developed. The circuit is more and more dense, and more components need to be assembled. However, the size of PCB will not become larger, but smaller and smaller. At this time, it needs considerable technology to drill holes in PCB. There…
We usually need to quickly estimate the resistance value of a wire or a plane on the printed circuit board, rather than carry out tedious calculation. Although there are available PCB layout and signal integrity calculation programs, which can accurately calculate the resistance of the wiring, we sometimes want to take a quick and rough…
The application of printed circuit board is not unfamiliar to everyone. Almost all electronic products will see that the development of science and technology promotes the continuous growth of PCB industry. People have higher and higher requirements for the number of layers, precision and reliability of components. There are many kinds of PCB in the…
In the era of Internet of things driven by 5g, the market demand of HDI and R-F PCB is growing. However, with more and more manufacturers entering the field, the fierce competition leads to the rampant low-price strategy, and the profit space of the head manufacturers is constantly compressed, which leads to the decline of…
FPC began in the 1950s, and the representative technologies that have appeared so far are as follows. (1) In 1953, DuPont applied for a polyimide patent (patent number: us2710853a) to protect polyimide resin, its film and pipe (in 1960s, DuPont’s polyimide film (Kapton), Vespel and pyre ml) were commercialized one after another). (2) In 1960,…
Flexible printed circuit board (FPCB) is a popular type of PCB, which is designed to meet the needs of flexible electronic circuits. Flexible circuit boards are the fastest alternative to traditional wiring harness because they are easy to shape to suit a variety of complex circuit designs. In addition, these boards provide design freedom while…
