PCB Blogger-China PCB Factory,HOYOGO

When the temperature rises to a certain critical value, the PCB substrate will change from a glass state to a rubber state.  The critical value of this temperature is the Tg value, so why use a high Tg PCB, and what are the specific advantages?   1.  H eat  R esistance The high-density mounting technology represented by SMT and CMT makes the PCB more and more inseparable from the high heat resistance support of the base material in terms of small aperture, circuit refinement and thinning. Ordinary Tg boards will soften and deform at high temperatures, while high Tg PCB have better heat resistance and can still maintain excellent physical and mechanical properties under high temperature conditions.     2.  M oisture  R esistance Moisture is destructive to the PCB and can greatly reduce the insulation resistance between conductors . Compared with ordinary PCB, high Tg PCB have better moisture resistance.     3. Stability With the deve...

      FPC  is not only  small and light,  but also  has high performance and functions. As a new welding technology, laser welding is widely used in FPC manufactur ing  by  FPC  factory . So what are the advantages of laser welding FPC?   1.  Laser welding uses high-density, high  heat  laser beams to focus and melt tin solder, while the solder joints of FPC can be directly focused by laser spotlights .   This  is not only conducive to precise control of solder joints, but also to avoid phenomena such as pseudo soldering or false welding.     2. FPC  is not suitable for electrostatic reaction during welding, and the reason why laser welding technology is superior to traditional welding technology is that it uses non-contact welding, which greatly reduces the possibility of static electricity generated by friction  during  FPC welding.     3.  Laser welding  is...

       In the PCB production process, the purpose of surface treatment is to ensure good solderability or electrical properties, so it is one of the important steps.  At present, the common surface treatment methods on the market include spray tin, immersion tin, immersion gold, etc. It is relatively rare to use ENEPIG for surface treatment. What is the PCB ENEPIG  technology ?   ENEPIG is a chemical palladium slot between chemical nickel and chemical gold.  Compared with other surface treatment methods,  ENEPIG   has the advantages of stable durability, excellent solder resistance, good compatibility, high plating flatness, and suitable for high-density pads, so it can be used in more precise PCB.   The welding performance is also better.     At present, the most widely used immersion gold  technology   is to wrap a layer of nickel-gold alloy on the copper surface to protect the PCB for a long time.   Compa...

       BGA packaging is  now  he mainstream packaging method. It has many advantages. Do you know what they are?       1 . Small size The BGA package only has chips, interconnect lines, thin substrate s   and plastic cover s ,  with   few exposed components and no large pins. The height of the entire chip on the PCB can be 1.2 mm.     2.  Large  S torage  S pace Compared with other types of packaging technologies, memory products and operating products using BGA packages will increase by more than 2.1 times in terms of memory capacity and operating speed.     3.  High  S tability Since the pins of the BGA package are directly extended from the center of the chip to the surrounding s , the transmission path of various signals is effectively shortened, the attenuation of the signal is reduced, the response speed and anti-interference ability are improved, and  the stability of the...

       Why do we say that PCB is like a "chameleon"? That's because PCB factory in the manufacturing process, some steps will cause the color of the PCB board to change . Let's take a look at which steps can produce interesting phenomena like "chameleon".   In PCB manufacturing, the following main steps are usually experienced: 1. Laminate Copper Foil:  The basis of the PCB board is a glass fiber substrate covered with copper foil. The color at this stage is usually the metallic color of the copper foil. (Changeless)     2.  Photoresist :  Coating a  photosensitive  photoresist layer on the copper foil. The color of the photoresist layer is usually transparent or light yellow. (Changeless)     3. Exposure:  A pattern is formed by exposing the portion to be developed using photolithography.  This step usually does not result in a change in the color of the  base material . (Changeless)     4....

      Do you know that PCB has pattern plating and tenting process? How to choose between them? Don't worry, let's first understand what are PCB pattern plating and tenting? In PCB manufacturing, pattern plating and tenting refer to two different graphic processing methods used by PCB factory when making photolithography patterns.   Next, let's take a look at two different graphics processing methods used in photolithography patterns: Pattern plating process: the pattern is positive! The pattern plating process means that PCB factory transfer the design pattern directly to the photoresist when making photolithography patterns, and then expose the photoresist part to the light source by photolithography. In this way, the photoresist will retain the area that matches the design pattern during the development process, forming the pattern of wires and components.     T enting   Process: Patterns are mirrored! The tenting process is the opposite process. Wh...

       Circuit Board process technology is developing very fast, and each different PCB manufacturer uses different process technologies. Different types and requirements of circuit board also need adopt different manufacturing techniques, but in these different techniques, there are many essential basic processes that are similar. So, what are the essential processes when manufacturing circuit board? 1. Basemap Film Manufacturing Board The basemap film determines the pattern to be configured when circuit board is manufactured. Moreover, no matter which technical method is adopted in the production process of the circuit board, it is necessary to use a base film film which meets the quality requirements. Therefore, the basemap film is an important tool when manufacturing circuit boards, and it is also the first step in manufacturing techniques.     2. Pattern Transferring After manufacturing the baseboard, transfer th...