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Processing method of tiny holes in circuit board production

Nowadays, with the rapid update of electronic products, the printing of PCB has expanded from single-layer board to double-layer board and multi-layer board with more complicated requirements for high precision. Therefore, there are more and more processing requirements for PCB holes, for example, the hole diameter is getting smaller and smaller, and the distance between […]

How do PCB manufacturers improve the precision of PCB?

High-precision PCB refers to the adoption of technologies such as fine line width/spacing, tiny holes, narrow ring width (or no ring width) and buried and blind holes to achieve high density. And high precision means that the result of “thin, small, narrow and thin” will inevitably bring high precision requirements. Take the line width as […]

Hard technology of PCB multilayer proofing production

With the progress of society and the development of science and technology, new electronic products are constantly emerging, which makes the application field and market of printed circuit board (PCB) products constantly expanding, and at the same time, the demand for electronic information processing of all kinds of products is gradually increasing. When the demand […]

Technique of replacing IC in PCB design

In PCB circuit design, there will be times when IC needs to be replaced. Here’s to share the skills of IC replacement, so as to help designers to be more perfect in PCB circuit design. Direct substitution Direct replacement refers to the direct replacement of the original IC with other IC without any change, which […]

How do circuit board manufacturers design RF circuit PCB

Digital system designers may be familiar with some RF components and wiring styles, but there is more to RF circuit design. RF circuits can include integrated circuits, discrete semiconductors, and printed RF components, which work together to produce desired functions. RF circuit design involves combining all these elements to build the whole system and create […]

PCB design skills of operational amplifier circuit

Printed circuit board (PCB) wiring plays a key role in high-speed circuits, but it is often one of the last steps in the circuit design process. There are many problems in high-speed PCB wiring, and many literatures have been written on this topic. This paper mainly discusses the wiring problem of high-speed circuits from a […]

How to do a good job in PCB design proofing

When I once saw the PCB of the computer motherboard, I thought how great it was to draw it myself. Later, when I came into contact with protel99se, I stepped into the team of drawing boards, and then altium, cadence and so on. With the accumulation of experience in drawing boards, more and more matters […]

PCB via hole problem in PCB proofing production

PCB via problem phenomenon description During the trial production of the new intelligent conference equipment samples produced by circuit R&D, when the samples were subjected to strict aging test and the system performance test, it was found that two devices were disconnected (abnormal communication), accounting for 4% of the total tested products. After analysis, it […]

PCB EMC47 principles

Differential current and common-mode current Radiation Generation: Current causes radiation, not voltage. Static charge generates electrostatic field, constant current generates magnetic field, and time-varying current generates both electric field and magnetic field. There are common-mode current and differential-mode current in any circuit. The differential-mode signal carries data or useful signals, and the common-mode signal is […]

PCB additive manufacturing process designed for PCB

Some STM32 application customers who use external SDRAM reflect that in EMC test, the radiation interference caused by SDRAM signal exceeds the standard. If the chassis can’t shield the radiation interference in the terminal products, then this kind of problem often needs to be solved by modifying the PCB design of SDRAM signal. Here, how […]