Author Archives: allaismt

Pcb sample is the most important step for any electronic hardware design engineer in electronic products, and it is also the beginning of all electronic products. From pcb design to finished electronic products, gadgets, smart phones, home appliances or electrical appliances, and so on, all electronic products and equipment you can think of and see. […]

Have seen the PCB (printed circuit board) of radio or computer, are there any interconnected electronic components? No? Then, this is a circuit board containing pads and wires, which can be electrically connected together at different points, or more precisely, connect components and connectors to each other. Circuit boards allow signals and power to be […]

Today, with the rapid development of science and technology, various high-tech electronic products emerge in endlessly, which makes circuit board manufacturers more and more strict on the quality of plates. So, what quality problems are most likely to occur in the PCB production process of PCB factory? 1. The dimension of substrate changes due to […]

When welding PCBA, there are usually many requirements for PCBA boards, and only boards that meet the requirements can be welded. So why do welding processes require so many requirements for boards? Originally, the processing of PCBA will go through a lot of special processes, and the application of special processes immediately brings the requirements […]

What is FR-4? FR-4 material, which is the abbreviation of glass fiber cloth, is a kind of raw material and base material of circuit board. It is the code name of the grade of flame-resistant material, which means that the resin material must be able to extinguish itself after burning. Most commonly used in PCB […]

It is a high-frequency board model produced by Rogers Rogers Company, which is different from the conventional PCB board-epoxy resin. It has no glass fiber in the middle, and uses ceramic matrix as high-frequency material. Rogers has excellent dielectric constant and temperature stability, and its thermal expansion coefficient of dielectric constant is very consistent with […]

In order to ensure the quality of signal transmission, reduce EMI interference and pass the relevant impedance test certification, it is necessary to design the impedance matching of PCB key signals. This design guide is a synthesis of commonly used calculation parameters, signal characteristics of TV products, actual requirements of PCB Layout, calculation of SI9000 […]

PCB is also called “PCB Printed Circuit Board”. PCB can be divided into single-sided, double-sided and multi-layered boards according to the hierarchy. It has the characteristics of high density, good security, thin thickness and good flexibility, and is widely used in the fields of communication, automotive electronics, consumer electronics, aerospace and so on. The manufacturing […]

1.PCBA production efficiency When you want a large PCB circuit board, many factories may not be able to do it because of its particularity. Therefore, it is necessary to know whether the supplier can produce and what is the production efficiency? When the PCB is larger than the industry standard and the supplier has no […]

1. Ground wire layout: 1. Digital ground is separated from analog ground. 2. The grounding wire should be as thick as possible, so that it can pass at least 3 times the allowable current on the printed circuit board, generally 2~3mm. 3. The ground wire should constitute an infinite loop as far as possible, so […]