PCB Blogger-China PCB Factory,HOYOGO

       PCB pad  falling off   is a  relatively  common  bad   phenomenon in   the   PCBA processing process , that is, the phenomenon that the pads are separated from the PCB. As a necessary medium for welding and assembling electronic components and PCB boards, once the pads fall off, the PCBA products will fail to be used normally. So what are the reasons for the PCB pads to fall off?   PCB and soldering problems are the main cause of PCB pads falling off.     PCB problem:   The poor adaptability of the copper foil and the resin of the PCB substrate will lead to the mismatch between the copper foil and the resin system, causing the PCB pad to fall off.   In the PCB manufacturing process, excessive etching of the circuit leads to copper throwing or deformation of the pad due to the collision of the pad position during the processing process, which will also cause the PCB pad to fall off.     ...

       The application of PCB in today's electronic products can be seen everywhere, and there are different shaped  pads on the PCB. As the basic unit of PCB moun ting, what is the role of the pad?   The PCB pad  refer s to the lead hole on the PCB board and the surrounding copper foil of various shapes.   The types of pads are different, the common ones are square pads, round pads, oval pads, etc., and some special pads, such as teardrop pads, cross pads, and plum pads.     Take the teardrop pad as an example .   I t looks like a drop of water.   It is generally used when the electronic components on the PCB are relatively small.   If it is directly connected to the circuit on the PCB board, it will be more difficult, and even if the connection is successful, as long as the PCB board is slightly impacted in the future, it will cause the original connection to loosen or even fall off directly.   To prevent this from ...

       As a support body for electronic components, PCB is crucial to ensuring the normal operation of the entire system. When doing PCB prototyping, choosing appropriate specifications is very critical, which directly affects the performance, stability and reliability of the PCB. So, how to choose the best PCB proofing specifications?   1.  Base Material Type The choice of material has a direct impact on PCB performance. Common PCB materials include FR-4, aluminum, polyimide (PI), etc.  Different materials have different electrical properties, thermal conductivity properties and mechanical strength, so the appropriate material needs to be selected based on specific needs.     2.  Number of Layers The selection of the number of PCB layers is also a crucial specification. Different application scenarios require different number of layers of circuit boards.  An increase in the number of layers can provide more layout space, makin...

      LED is short for Light Emitting Diode. At present, SMD packaging is the most widely used packaging form in LED applications. Generally, the light emitted by a single LED assembly is limited. So a light fixture will use multiple LED components to get enough light. Like other semiconductor devices, PCB are the best way to electrically connect LED components. PCB with LED components are often referred to as " LED PCB ".   Metal core PCB are widely used in LED applications because of their strong heat dissipation capabilities, especially aluminum is often  used for   PCB production of LED lights.   Typically, aluminum PCB contain a thin layer of thermally conductive dielectric material that can transfer and dissipate heat much more efficiently than traditional rigid PCB.     Advantages of LED 1.  Lower power consumption: Replacing incandescent lamps with LED lamps can reduce power consumption by more than 80%.     2. L onger...

       In the SMT processing process, static electricity is a "troublemaker". It will damage our PCB boards and electronic components. What specific problems will it cause? And how do we  solve   these problem ?   Let ’ s first take a look at some of the problems that static electricity may cause: 1. Component  D amage Electrostatic discharge can cause damage to electronic components. Sensitive integrated circuits, transistors, diodes and other components may suffer from electrical breakdown, excessive voltage and other problems under the influence of electrostatic discharge, and thus lose their normal functions.     2.   Production  E quipment   F ailure Regardless of how small static electricity is, if electrostatic discharge acts directly on production equipment, especially  the  sensitive electronic components on SMT equipment, it may cause equipment failure and shutdown   accidentally , thus affect...

       Why should FPC be stiffened? Because the FPC itself is only flexible, and the application scenarios of individual FPC are different, in order to meet the use requirements, it is necessary to increase a certain thickness and rigidity in the designated position. The main purpose is to improve the strength of the FPC plug-in part; or to solve the local flexibility of the FPC, to facilitate the overall assembly of the product. Generally, the materials used for FPC stiffener need to meet the requirements of high and low temperature resistance, acid and alkali resistance, corrosion resistance, etc. So what are the FPC stiffener materials?   1.  PI As a special engineering material, PI has been widely used in aviation, aerospace, microelectronics, nano, liquid crystal, separation membrane, laser and other fields. It is resistant to high and low temperatures and flame retardant. PI protective film or PI stiffener film is mainly used in FPC stiffener. PI prot...

       In  PCBA factory,  wave soldering is a common PCBA technology used to connect electronic components to PCB. So why does the tin short circuit occur after wave soldering? This involves many reasons, let ’ s explore them one by one. Next, let us explain the reasons in detail:   1. Excessive soldering station temperature The temperature control of the soldering station is like the heat of stewing soup, it cannot be too high. If y o u want to   solve this problem,  we   need to control the temperature of the equipment and ensure it is within an appropriate range to prevent solder from overheating and causing tin  short circuit   problems.   In addition, it is necessary to check whether the design of the soldering pad complies with the specifications to prevent tin short circuit due to excessive temperature.     2.  Poo r   solder   fluidity If we want to solve this problem, we must choose the ri...