PCB Blogger-China PCB Factory,HOYOGO

       PCB step slots are a special design on PCB that creates a series of slots or steps of different heights along the edges or specific areas inside the PCB. These slots are usually made up of stacked layers, creating the ladder-like structure of the PCB. Do you know what are the advantages of PCB step slots ?       1.  Electromagnetic interference control The step slots create ground planes of different heights in the PCB, which can effectively isolate electromagnetic interference between different signal layers, thereby improving the signal integrity and performance stability of the circuit board.     2.  Signal integrity Step slots can reduce crosstalk and coupling between different signal layers in the PCB. By creating a height difference in the PCB, step slots can prevent signals from traveling from one place to another, thereby reducing the adverse effects caused by signal interconnection.     3. Manage heat   Step slots can also be used to better manage heat in the PCB. By cr

       With the continuous advancement of technology, large-size PCB are widely used in various fields and have become an indispensable part of the modern electronics industry.  Do you know what are the application fields of large-size PCB ?   1.  Aerospace In the aerospace field, large-size PCB are used in various avionics equipment and control systems. For example, it can be used in aircraft flight control, communications, navigation, radar and entertainment systems.  These PCB carry a large number of electronic components to implement various functions and play a vital role in the safety and performance of the aircraft.     2.  Automotive Manufacturing In automobile manufacturing, large-size PCB are used in various automobile electronic control systems. Such as engine control, braking system, etc. These PCB not only need to carry a large number of electronic components, but also need to be resistant to high temperatures and corrosion to ensure the safety and performance of the car.

       The keyboard plays an important role as a computer peripheral. Its core component: the keyboard PCB, plays a vital role in the performance and stability of the keyboard.   It is responsible for converting the user's key input into electrical signals that the computer can recognize . Do you know what are the significant differences between keyboard PCB and other types of PCB?     Let ’ s first  take a look at the knowledge  about the keyboard PCB: The design and manufacturing quality of PCB directly affects the electrical performance, mechanical life and lighting effects of the keyboard.  Generally speaking, excellent PCB design needs to take into account layout,  routi ng, heat dissipation, signal transmission and other aspects to ensure the stability and performance of the keyboard.     When buying a keyboard, we often hear terms such as "RGB axis", "hot swapping", and "PBT keycap". These terms are usually related to PCB, such as RGB axis and

       PCB panelization:  It is to splice several PCB together.  It is not only improves production efficiency,  saves costs, but also facilitates SMT welding in the later stage.  So what are the methods of PCB panelization?     1. V-CUT V-CUT is to put two or more PCB together, and then cut a V-shaped slot at the connection between the board and the board, which can be broken when in use. Since V-CUT can only cut straight lines, it is more suitable for rectangular PCB boards.  Secondly, V-CUT also has certain requirements on the thickness of the PCB, generally requiring a thickness of more than 1mm.   Because it is too thin, it will destroy the strength of the board itself, so the PCB with the thickness less than 1mm is not suitable for the V-CUT panelization method.   2.  Stamp Hole The stamp hole are some small holes drilled at the connection of the board to form a connection, and the burrs need to be removed all around.  The size of the hole is generally about 0.3mm, and the distan

       FPC has the advantages of thin, light, and flexible, and can be flexibly routed in complex or restricted spaces.  During the production of FPC factor y ,  coverlay  are sometimes opened on the FPC.  What is FPC coverlay opening ?   Why does  FPC need to open coverlay?       1.  What is FPC Coverlay Opening FPC coverlay opening refer to coating a protective film on the FPC, and then opening the film layer through cutting or etching technology to expose part of the circuit that needs to be exposed.  This can protect the FPC while ensuring that the required circuits can work properly.      2.  Why dose FPC need to Open Coverlay 1)  Circuit connection FPC is often used to connect different parts of electronic devices or systems.  The coverlay openning process exposes the circuitry beneath the coverlay for physical and electrical connections to other circuits, components or connectors.   Coverlay opening provides more direct access to circuits and enables efficient connections of cir

       Common PCB failure problems can be divided into: poor PCB design, damage to electronic components, poor quality of components, short circuits, etc. Then, when the PCB fails, how to troubleshoot it?   Common PCB faults are mainly concentrated on components such as capacitors, resistors,  inductors,   as well as integrated chips and crystal oscillators.  To judge whether these components are faulty,  we  can observe them through eyes . If there are obvious burn marks on the surface of damaged electronic components, such faults can be solved by directly replacing the  defective  components with new ones.     However, not all damage to electonic components can be observed with the naked eye.  What should  we   do   when the components are damaged and there are no visible burn masks on the surface ? We can use professional inspection tools for maintenance, such as multimeters, capacitance meters, etc. When it is detected that the voltage or current of an electronic component is not w

       Multilayer PCB can realize more connections and functions in a small area.   In the multilayer PCB manufacturing process, browning and black oxide removal are common manufacturing technologies, so do you know the difference between these two technologies?   Let's first understand the effects of browning and  black oxide removal   of multilayer PCB -  R oughe n   the copper surface, increas e   the bonding area, and increas e   the surface bonding force.     1.  Black Oxide Removal 1)  Process: PCB Board In → Cleaning Solder Mask → Water Rinsing →Microetching→ Water Rinsing → Black Oxide(First) → Water rinsing → Microetching → Pre-dip → Black Oxide(Second) → Water Rinsing → Baking → PCB Board Out     2)  Advantages: The bonding force of the black oxide removal technology is better than that of the browning technology.     3) Disadvantages: The black oxide removal technology will increase the contact area between the resin and the copper surface and strengthen the bonding forc

       PCB are sometimes processed by dispensing machines, which are mainly used for waterproof, dustproof, anticorrosion, and long-term effective protection of PCB and some electronic components that are sensitive to some electronic equipment. In the dispensing process, there are 3 dispensing paths. Do you know which 3 are?   1.  I-shaped Distribution Path The I-shaped dispensing path, also known as the straight-line dispensing path, is suitable for dispensing where a small area is required at the edge of the chip. The length of the dispensing route is generally 50% to 125% of the edge length of the chip. Longer lines can help reduce the curing time of the glue at the edge of the chip, but increase the possibility of trapping some air bubbles, so care needs to be taken to control the amount of glue used.     2.  L-shaped  D ispensing  P ath The L-shaped dispensing path is dispensing along the adjacent two sides of the chip. The glue has the shortest flow time and the shortest curing t

      Vias are one of the important components of a PCB.  A via is mainly composed of two parts, one is the drill hole in the middle, and other is the pad area around the drill hole. In the PCB manufacturing process, there are 3 methods of processing vias. What are these?   1.  Vias covered with solder mask ink Vias covered with solder mask ink means that the solder ring of the via is not exposed and covered with solder mask ink, which not only ensures the electrical performance, but also avoids the risk of short circuit with other components during use.     2.  V ias with solder mask opening Vias with solder mask opening means that the solder ring of the via is exposed and not covered with solder mask ink. This processing method is similar to the processing method for plug-in holes. The plug-in holes generally require opened and tinned.  This kind of processing is usually carried out when there are special needs for vias with solder mask opening.   If the surface treatment is HASL, th

      In the PCB manufacturing technology, boards made of different base materials are mixed and pressed together, which is called hybrid PCB . So what are its advantages and disadvantages?   Advantages: 1.  High  R eliability Hybrid PCB  is a   circuit board and different substrates  that are   press ed together through a hot pressing   technology , which can effectively improve the mechanical strength and electrical connection performance of the entire circuit board, thus improving the reliability and stability of the product.     2.  High signal transmission efficiency The hybrid PCB can realize high-speed and high-frequency signal transmission through multi-layer design, and can also reduce signal interference and distortion, and improve signal transmission efficiency and quality.     3.  Good cooling performance Hybrid PCB can closely combine the circuit board and the substrate to form an integral heat conductor, thereby effectively improving the heat dissipation performance of th