First: tell the difference between a good and a bad board by its appearance In general, the appearance of FPC circuit boards can be analyzed and judged by three aspects; 1. Standard rules for size and thickness. The thickness of the circuit board is different sizes for standard PCBs, so customers can measure and check…
In general there are two main rules to follow for stacked design: 1. Each alignment layer must have an adjacent reference layer (power or ground); 2. The adjacent main power and ground layers are to be kept at a minimum distance to provide a large coupling capacitance. Here is an example of a stack from…
In general there are two main rules to follow for stacked design: 1. Each alignment layer must have an adjacent reference layer (power or ground); 2. The adjacent main power and ground layers are to be kept at a minimum distance to provide a large coupling capacitance. Here is an example of a stack from…
In the usual PCB design, we will encounter various safety clearance issues, such as vias and pads The spacing, the spacing between traces and traces, etc. are all things we should consider. So today we divide these spacing requirements into two categories, one is: electrical safety spacing; the other is: non-electrical safety spacing. 1. The…
With the increase in the quality of electronic assembly technology and the competitive needs of the market, fully automatic inserters are rapidly gaining popularity. This has led to increasing demands on the quality of punching of single-sided PCB paper-based boards (a few single- and double-sided non-metallized hole epoxy-glass cloth substrates also use punching). This article…
High-speed backplane designers face several key challenges such as signal attenuation, inter-symbol interference (ISI), and crosstalk. Products on chip with innovative signal conditioning techniques, such as high-speed backplane interface solutions, can effectively address these system-level challenges, enabling system vendors to provide their customers with high-performance and scalable systems with reduced development time and cost. High-speed…
Analog circuits rely on continuously varying currents and voltages for their operation. The operation of a digital circuit depends on the detection of a high or low level at the receiver according to a predefined voltage level or threshold, which is equivalent to determining whether the logic state is “true” or “false”. In the digital…
Smart manufacturing is to realize the intelligence and innovation of the whole manufacturing value chain, and is a further enhancement of the deep integration of informationization and industrialization. At present, the “intelligence” of smart manufacturing is still at the level of Smart. The smart manufacturing system has the ability of data collection, data processing and…
Flexible and rigid boards consist of a combination of rigid and flexible boards that are permanently connected to each other. The primary application of rigid-flexible circuit boards offers the best solution in limited space conditions. The technology offers the possibility to safely connect device components while ensuring polarity and contact stability, and reduces the number…
Board surface blistering is one of the more common quality defects in the production process of circuit boards, because the complexity of the production process of circuit boards and the complexity of process maintenance, especially in the chemical wet treatment, making the prevention of board surface blistering defects more difficult. The author based on years…