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Introduction to glass cloth for PCB production materials

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发布时间： 2018 - 08 - 10

点击次数： 90

CCL is the basic material needed for PCB production, and glass cloth is one of the important framework materials for CCL. Glass cloth is a fabric woven with glass fiber. It has the properties of insulation, heat insulation, corrosion resistance, non-combustion, high temperature resistance and high strength. Glass fiber has many advantages compared with organic fiber, such as high tensile strength and high modulus of elasticity. It has small water absorption, good heat resistance, good transparency and good processability. It can be used as a product of different forms such as strands, bundles, felts and woven fabrics. Because of its high quality characteristics, it plays a very important role in the manufacture of copper clad laminates. In the late 1950s, Ch...

Factors of price change in PCB production

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发布时间： 2018 - 08 - 10

点击次数： 51

In the PCB industry, the price of each production is different, and there are many factors. So, what are the factors affecting the price of PCB? 1. Materials Just like other products, the prices of products made from different materials are not the same, and the PCB is also the same. Taking ordinary double-panel as an example, the sheets generally have FR-4, CEM-3, etc., the thickness ranges from 0.6mm to 3.0mm, and the thickness of copper varies from 1Oz to 3Oz. The difference in sheet material causes huge price difference. . 2. Production Process Different production processes will result in different costs. Such as gold-plated plate and tin-plated plate, the shape of the 锣 (milling) plate and beer (punching) plate, the use of silk screen lines and dry film lines will form different cost...

PCB production: welding considerations

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发布时间： 2018 - 08 - 10

点击次数： 30

Soldering plays a vital role in PCB production. So, what should you pay attention to when welding? Before welding, observe whether each solder joint (copper skin) is clean and oxidized. The order of component soldering is:  resistor, capacitor, diode, transistor, integrated circuit, high power tube. When welding objects, it is necessary to look at the solder joints to avoid short circuits caused by poor soldering of the lines. Both the chip and the base are oriented. When soldering, strictly follow the direction indicated by the notch on the PCB, so that the chip, the base and the PCB are corresponding to the gap. If the pins of the integrated circuit are gold-plated, do not use a knife to scrape it. Use a clean eraser to clean it. For CMOS integrated circuits, if the pins are short-circu...

SLP is about to become a battleground for the military

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发布时间： 2018 - 08 - 09

点击次数： 32

Due to the heat of consumer electronics such as PCs, NBs, and mobile phones, the PCB industry has seen great development this year. However, equipment such as mobile phones are being upgraded, and the requirements for PCBs are also increasing. In particular, Apple, whose update speed is fast, requires the PCB factory to respond well. There has been rumor in the market that Apple is looking for a "carrier-like board" technology that can replace existing HDI (high-density boards) to comply with the trend of SIP (system-in-package) for smartphones. The upcoming iPhone 8, is expected to be equipped with a flexible OLED screen, dual lens, glass case, and power modules that support fast charging, wireless charging, and large-capacity batteries. The main reason for the reduction in thic...

The meaning and design principle of each layer of PCB multilayer board

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发布时间： 2018 - 08 - 09

点击次数： 30

Electronic products need to be updated. For versatile, small-volume electronics, single-sided and double-sided PCBs are not fully compliant, and multi-layer PCBs must be used. Multi-layer PCB has many advantages, such as: high assembly density, small size; shortened connection between electronic components, fast signal transmission, convenient wiring; good shielding effect, and so on. The number of layers of the multi-layer board is not limited, and there are currently more than 100 layers of PCBs, and the common ones are four-layer and six-layer boards. When the multi-layer board is designed, the layers should be symmetrical, and it is better to have an even number of copper layers. If it is asymmetrical, it is easy to cause distortion. The multi-layer board wiring is carried out accordin...

Introduction to PCB development trends

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发布时间： 2018 - 08 - 09

点击次数： 21

In any electronic product, PCBs are needed. In recent years, electronic products have developed rapidly. Mobile phones, computers, game devices, and recently hot AR, VR, 3D and other smart devices are developing rapidly, which will definitely drive the development of the PCB industry. What are the development trends of the PCB industry? We mainly introduce the following points:Production valueIn 2012, the global PCB output value reached 54.31 billion US dollars, and by 2017, the global PCB will maintain a growth rate of 3.9%. The overall size of 2017 is expected to reach 65.654 billion US dollars. With the rise and promotion of new medical electronic devices, the Internet of Things, smart homes, and smart cities will increase the growth of the electronic information industry. It is predict...

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