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- Release on2020-02-28
- The quality of reflow soldering is affected by many factors, the most important factor is the temperature curve of the reflow soldering furnace and the composition parameters of the solder paste....Read More>>
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- Release on2020-02-27
- Common quality problems of SMT patches are missing parts, side parts, flip parts, offsets, and damaged parts....Read More>>
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- Release on2020-02-26
- There are several common quality problems caused by poor printing of solder paste:
1.Insufficient solder paste (local lack or even overall lack) will lead to insufficient solder amount of the component solder joints after the soldering, open components, and component misalignment and vertical components...Read More>>
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- Release on2020-02-25
- Wire drawing / Drag tail is a common defect in point glue, and the common causes are: the inside diameter of the nozzle is too small, the point glue pressure is too high.....Read More>>
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- Release on2020-02-24
- PCBA, Printed Circuit Board Assembly, this is a technology mature industry, printed circuit board assembly; also called SMT, Surface Mounting Technology, surface mount technology....Read More>>
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- Release on2020-02-22
- 1.PCB proofing process level is not clear:The single-panel design is in the TOP layer. If you do not specify the pros and cons, you may make a board and install the device instead of soldering....Read More>>
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- Release on2020-02-21
- The anti-interference problem is a very important link in modern circuit design. It directly reflects the performance and reliability of the entire system. For PCB engineers, anti-interference design is the focus and difficulty that everyone must master....Read More>>
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- Release on2020-02-21
- In actual research, it is found that there are four main interferences in the PCB design: power supply noise, transmission line interference, coupling, and electromagnetic interference (EMI)....Read More>>
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- Release on2020-02-20
- As ICs become more integrated, more and more IC pins become denser. However, it is difficult for the vertical solder spray process to blow the thin pads flat, which brings difficulty to the placement of SMT; in addition, the standby life of the solder spray board is very short....Read More>>
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- Release on2020-02-20
- Surface treatment of PCB board:Anti-oxidation, tin spray, lead-free tin spray, immersion gold, immersion tin, immersion silver, hard gold plating, full plate gold plating, gold finger, nickel-palladium OSP: lower cost, good solderability, harsh storage conditions, time Short, environmentally friendly technology, good welding and smooth....Read More>>
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- Release on2020-02-19
- After we have analyzed the principle of the entire circuit, we can start to place and route the entire circuit. In this issue, I will introduce the ideas and principles of layout....Read More>>
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- Release on2020-02-18
- In the process of learning embedded development, PCB layout is essential. A good wiring method looks beautiful and has a reasonable layout in the light, and can save production costs in the light of it, achieve good circuit performance and heat dissipation performance, and optimize the performance of components....Read More>>
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- Release on2020-02-17
- What is the color of the PCB board? As the name suggests, when you get a PCB board, you can most intuitively see the color of the oil on the board, which is the color of the PCB board. The common colors are green, blue, red, and black Wait....Read More>>
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- Release on2020-02-14
- I often ask some customers or friends, what is the material of your PCB? The usual answer is FR4, well, when I didn't ask, I still don't know what the specific material is. Therefore, it is necessary to return to the popularization of related PCB board classification. In order not to enlarge the problem, we are still limited to most applications, and mainly focus on FR4 correlation....Read More>>
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- Release on2020-02-14
- Now electronic technology is getting more and more advanced, CPU can do 5nm process, circuit board can do dozens of layers, foldable screen is used in many mobile phones....Read More>>
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- Release on2020-02-12
- Via hole is also called a via hole. In order to meet customer requirements, the via hole of a circuit board must be plugged. After a lot of practice, the traditional aluminum sheet plugging process has been changed, and the white board is used to complete the soldering and plugging of the board surface. Stable production and reliable quality....Read More>>
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- Release on2020-02-12
- As the carrier of various components and the hub of circuit signal transmission, PCB has become the most important and critical part of electronic information products. The quality and reliability of PCB determine the quality and reliability of the whole equipment....Read More>>
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- Release on2020-02-12
- Compared with silica gel, hot melt adhesive has the advantages of fast curing, and the flame retardance of hot melt adhesive is also good. Generally, it has FDA and UL94 certification, up to 94V0 level....Read More>>
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- Release on2020-02-12
- With the rapid development of science and technology, electronic products are becoming more and more sophisticated, and higher requirements are placed on materials, processes, product design, structure, and functions. For this reason, industrial adhesives are one of the indispensable industrial materials in the product assembly process....Read More>>
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- Release on2020-02-06
- Process flow: Photosensitive paste preparation has stretched the net-degreasing-drying-coating film-drying-exposure-development-drying-revision-final exposure-sealing net...Read More>>
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