博文

目前显示的是 六月, 2022的博文

8 PCB Special Technologies

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       Electronic products and equipment used in our daily life, as long as there are electronic components such as integrated circuits, there is the existence of PCB.   In PCB processing, due to the differences in technical requirements and manufacturing capabilities, there are many special technologies with high technical threshold, high cost and long cycle.   So what are the relatively special PCB technologies?     1.  I mpedance  C ontrol When digital signals are transmitted on a PCB, the characteristic impedance value of the PCB must match the electrical impedance of the head and tail components. Once mismatched, the transmitted signal energy will be reflected, scattered, attenuated or delayed. In this case, impedance control must be performed to match the characteristic impedance value of the PCB to the component.   2.  Blind and Buried Via Blind Via: It is a hole in one of the top or bottom layers, but cannot be seen through .  Buried Via: It is on the inner layer of the PCB, th

What are the SMT Processing Materials?

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      The quality and production efficiency of SMT processing  is   very critical to PCB, and the materials used for processing play a crucial role.   So what are the materials in SMT processing?       1.  S older  P aste Solder paste is a paste made by alloy solder powder and paste sol dering flux.   It is an indispensable solder material in SMT processing and is widely used in reflow soldering. Solder paste has a certain viscosity at room temperature, which can stick electronic components in designated positions, and then at the soldering temperature, with the volatilization of solvents and some additives, the soldered components are connected to the PCB to form a permanent connection.     2.  S oldering  F lux Soldering is the main process o f SMT processing,   and soldering flux is an auxiliary material used in soldering. Its main function is to remove the oxides on the surface of the solder and the material to be soldered, so that the metal surface can achieve the necessary cleanl

What are the Commonly used Inspection Methods for PCB?

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      In order to ensure the quality of PCB, a variety of detection methods will be used in the production process to detect possible problems or defects. What are the commonly used detection methods for PCB?       1. Manual  V isual  I nspection The inspector will use a magnifying glass or calibrated microscope to check whether the PCB is qualified or not. Generally, it is to check whether there are obvious defects in the appearance PCB, pad, solder mask ink, and outer layer traces.     2.  O nline  T est ing By inspecting electrical properties to find defects and testing analog, digital and mixed-signal components to ensure they meet specifications, bed of needles and flying probe testers are used for testing.     3.  F unction al   T est The general functional test is the last step before the final manufacturing, mainly to conduct a comprehensive test on the functional modules of the PCB to confirm the quality of the PCB.     4. Automatic Optical Inspection Automatic optical inspect

Why do PCB Need Panelization?

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       Generally, before PCB design or production,   a PCB  panelization   operation will be carried out , and after the processing is completed, it needs to be cut into   single board . So why do it?         The track of the SMT placement machine has a maximum and minimum size limit. When using 1 pcs smaller size PCB for processing, although it can sometimes pass the track of the placement machine, it wastes the capacity of the placement machine and the production efficiency is not high. However, if there are 10pcs, 20pcs, etc. single PCB in the panel, th is will not only improve the welding efficiency of the patch, but also only need to pass the placement machine once to complete the welding of multiple PCB.     After the PCB processing is complete, a lot of testing needs to be done.  Such as burn-in test, programming test, ICT test, signal test, etc.   Then it has more circulation time in the production workshop, and it is also a big problem for the storage space after SMT processin

HoYoGo's Dragon Boat Festival

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Time is in a hurry, and it is time for the fragrance of Zongzi; May 5 th  is China ' s traditional festival-the Dragon Boat Festival.   Welfare  c o me first  before the  Dragon Boat Festival. The company  carefully  prepared  Dragon Boat Festival gifts  for every HoYoGo person in advance - Zongzi and mung bean cake. Eating zongzi is the traditional custom of the Dragon Boat Festival .  Reed leaves fragrance represents the strong feelings of Dragon Boat Festival . What we received was a gift and felt the passion of HoYoGo.   Zongzi are white glutinous rice wrapped in leaves and filled with delicious fillings. After cooked, gently peel the zongzi leaves, and the aroma of zongzi comes out, which is not only delicious but also beautiful.       Mung bean cake is also one of the traditional  special  cakes . The color is  light yellow,  the  taste  is delicate and tight ,  and it has  characteristics  of  fragrance ,  soft ness and  non-sticking.       The Dragon Boat Festival is approa

The Advantages of Arbitrarily Interconnected HDI

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  As an important electronic connector and high-tech electronic synthesis product,  arbitrarily interconnected HDI can  be applied to almost all electronic products, especially in mobile phones or digital products, and it has stable performance, fast signal transmission and high performance. A rbitrarily interconnected HDI  plays a key role in these fields, so it is highly sought after by users in various fields in the market. Next, let's analyze its advantages.     The advantages of arbitrarily interconnected HDI are mainly reflected in the following three aspects:     1. Signal Transmission Speed Arbitrarily interconnected HDI is a circuit component product that runs stably and has a fast signal transmission speed. Since the contact distance of the integrated circuit component is reduced, the speed of the entire signal transmission is higher. Moreover, the shortening of the length of the accessories between the points can also achieve the fast transmission of the signal, so that

Application of Ceramic PCB in Automobile

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  With the development of science and technology, more and more new materials and new technologies are applied to the R&D and production stages of automobiles, so that automobiles can meet the requirements of light weight, low cost, intelligence, economy and reliability. For the use of new materials, ceramic PCB is one of the better materials, so where is it often used in automobiles?       1.  E ngine Ceramic PCB can withstand high temperatures above 1000 ℃ , which is beneficial for the development of new automotive applications.  Nowadays, about 78% of the energy consumed in a car engine is in heat and heat transfer.   In order to reduce this loss, the combustion chamber is insulated with a good thermal insulation ceramic material, and then the exhaust gas energy is recovered through the exhaust gas turbocharger and power turbine. Experiments have shown that this can increase thermal efficiency to 48% while reducing thermal energy loss.     2.  Shock Absorber The shock absorber o