Factors affecting PCB welding quality From PCB design to the completion of all components welding for a high quality circuit board, PCB design engineers and even the level of welding process, welding workers and many other links have strict control. It mainly includes the following factors: PCB diagram, quality of circuit board, quality of device, [...]
1. How to choose PCB board? The choice of PCB panel must meet the design requirements and the production and cost of the balance. Design requirements include electrical and mechanical parts. This material issue is usually important when designing very high speed PCB boards (frequencies greater than GHz). For example, the current commonly used fr-4 [...]
In 2011, the total global share of the world's top 30 PCB companies was 49.8%, which increased to 60.5% in 2017. The market concentration increased significantly. The market share of leading PCB companies in China has been significantly improved, from 2.7% in 2011 to 6.1% in 2017, shennan circuit from 0.6% in 2011 to 1.4% [...]
High frequency PCB circuit design common 66 problems With the rapid development of electronic technology and the wide application of wireless communication technology in various fields, high frequency, high speed and high density have gradually become one of the significant development trends of modern electronic products. High frequency and high speed digitalization of signal transmission [...]
Not long ago, the ministry of industry and information technology issued the "specifications and conditions for the printed circuit board industry" (hereinafter referred to as "specifications and conditions") and "interim measures for the administration of printed circuit board industry specifications and announcements", which took effect on February 1 this year. The document specifies: 1. The [...]
With the marketization of scientific research and technology development, it is becoming more and more difficult to complete the design of complex electronic systems in a short time by using traditional electronic design methods. EDA (EleCTRonICs Design Automation) technology is an advanced, rapid and effective electronic Design Automation tool with the rapid development of integrated [...]
When troubleshooting non-functional or non-performing circuits, engineers can often run simulations or other analytical tools to consider the circuit at the schematic level. If these methods fail to solve the problem, even the best engineers may be stumped, frustrated, or confused. I've been through this before. To avoid this kind of cul-de-sac, here's a simple [...]
At present, there are so many PCB design software, which PCB design software should be learned? At present the mainstream of the three PCB design software, the current mainstream is not mentioned. 1. Altium Designer is short for AD. It's sort of an updated version of PROTEL. 2. PADS 3. Cadence allegro Don't worry about [...]
5G spectrum is much higher than 4G, and the number of acer stations has increased significantly 5G spectrum is much higher than 4G, with poor penetration and large attenuation of electromagnetic wave. When other factors are not taken into account, the coverage of base station is smaller than that of 4G base station, and the [...]
RF circuit board design is often described as a kind of "black art" due to many theoretical uncertainties, but this view is only partially correct, RF circuit board design also has many guidelines to follow and should not be ignored. In practical design, however, the real trick is to compromise these guidelines and rules when [...]