PCB Blogger-China PCB Factory,HOYOGO

       In  PCBA factory , in order to prevent components from falling off or shifting during the wave soldering process, it is often necessary to use SMD adhesive to fix the components on the PCB board.  So what should you pay attention to when using  SMD Adhesive  in PCBA processing?   1)  The purchased  SMD  adhesive should be placed in a refrigerator below 5°C and stored in a low-temperature seal.  And do a good job in registration, pay attention to the production date and service life. It is also necessary to note that large quantities of incoming goods must pass inspection before they can be put into storage.     2)  After taking it out of the refrigerator during use, it should be restored to room temperature for 2 to 3 hours to allow it to equilibrate with room temperature before opening the container to prevent the SMD adhesive frost from absorbing moisture. Please pay attention to the type and viscosity of the SMD adhesive when using it. For newly replaced SMD adhesives, pay at

        After the PCBA processing is completed, if the product assembly cannot be carried out in time, the PCBA board needs to be properly stored and placed, so how to store it for a long time?   1. Coat ing  conformal  coating PCBA boards without conformal coating cannot be exposed to the air for too long.  If you want to store for a long time, you can coat the PCBA with a conformal  coating , also called PCBA protective oil, which has the functions of anti-humid heat, dust-proof and anti-oxidation, which can effectively prolong the storage time of the finished PCBA board.  When c oat ing the  conformal  coating, you must choose the appropriate  conformal  coating type, because the protective effect of different types of  conformal  coating will be different.     2.  V acuum packaging Although coating  conformal  coating can prolong the storage time of PCBA, some PCBA boards will be equipped with some electronic components that cannot be coated with  conformal  coating, such as senso

        The copper  base PCB   is  mainly  based on  copper, and its composition  structure   are  the same as that of the aluminum  PCB , which are the copper base layer, the insulating layer and the circuit layer. 1. The circuit layer of the copper base PCB is required to have a large current carrying capacity, so thicker copper foil should be used.     2. The insulating layer is the core technology of the copper base PCB. The composition is composed of aluminum oxide and silicon powder and epoxy resin filled polymer.  It has low thermal resistance, excellent viscoelasticity, thermal aging resistance, and can withstand mechanical and thermal stress.     3. The metal base layer is the support member of the copper base PCB, which requires high thermal conductivity and is suitable for conventional machining such as drilling, punching and cutting.     4. Copper  base PCB  can be machined into metallized holes, but aluminum  PCB  cannot.  The network of metallized holes must be the same n

      Welding is to reliably connect all kinds of components that make up the complete machine product, and its quality is closely related to the quality of the complete machine product. The quality of each solder joint affects the stability, reliability and electrical performance of the entire machine. Do you know how to check the welding quality of PCBA manual welding?   1. Quality Requirement for Manual Welding 1) Electrical contact should be good:  Good solder joints should have reliable electrical connection performance, and  phenomena such as false soldering and  bridgin g  are  not  allowed.   2) Mechanical strength must be reliable: It is necessary to ensure that the solder joints will not fall off due to normal vibration during use.     3) Should maintain a beautiful appearance: The surface of a good solder joint should be smooth, bright, and free from sharp edges, wrinkles, bubbles, slag inclusions, and pitting. The transition from the solder to the metal to be welded should

       The month of November is on the verge of bidding farewell to the season of autumn. The warmth remains unabated despite the arrival of winter. The promised   birthday party   was filled with warmth. HoYoGo people gathered together to send blessings to our friends celebrating their birthdays. At the same time, we also experienced the love and care in this friendly birthday gathering.   First,  Mr. Liu  said : Although the external environment is still challenging, we should also take this opportunity to reflect and enhance ourselves. All our departments will continue to collaborate closely in order to fulfill their responsibilities and obligations.   We always pay attention to the alignment between our job abilities and needs ,  as we continuously enhance our professional skills and expand our knowledge reserves. Through ongoing learning, we incessantly refine our competencies and qualities in our respective roles, enabling us to better adapt to fluctuations in the external enviro

In PCBA factory , flux is an indispensable auxiliary material in the welding process. The quality of the welding effect is not only related to the quality of the welding technology, components and printed circuit boards, but also the selection of flux is very important. Do you know how to choose flux?   1. Performance requirements for flux 1) The flux need to have the characteristics of removing surface oxides, preventing re-oxidation and reducing surface tension, which is the basic performance that the flux must have.     2)  The melting point should be lower than the solder.   Before the solder melts, the flux must melt first to fully exert its fluxing effect.     3) The wetting and diffusion speed of flux is faster than that of molten solder.     4 ) The viscosity and density of flux are smaller than that of solder. A high viscosity will make wetting and diffusion difficult, and a high density will not cover the solder surface.     5)  Welding beads should not be splashed during wel

When doing PCBA processing ,  we  occasionally encounter some boards that need to be repaired. Repair is also a very important link. Once errors occur, it may directly lead to the scrapping of the circuit board. So what should  we  pay attention to when repairing?   1.  If there are solder joint defects such as open circuit, bridge, and virtual soldering generated in the reflow or wave soldering process, it is necessary to use tools, such as BGA rework station, X-Ray, high-power microscope, etc., to remove various solder joint defects after trimming. So as to obtain qualified PCBA solder joints.     2. If the repair process needs to be heated above 110 ° C, or there are other moisture-sensitive components within 5mm of the repair area.     3.  For moisture-sensitive components that need to be reused, if hot air reflow, infrared and other repair processes are adopted through the heating solder joint of the component package, it must be baked and dehumidified according to the moisture se

Both copper base PCB and aluminum PCB belong to PCB IMS boards, which are composed of circuit layers, insulating layers, and metal base layers. It has  special magnetic permeability, excellent heat dissipation, as well as good processing performance ,  high mechanical strength  and other characteristics .  And the characteristics of good processing performance and high mechanical strength. So what is the difference between copper base PCB and aluminum PCB?   1.  The base materials used are different. This is obvious. The aluminum PCB uses aluminum as the base material, while the copper base PCB uses copper as the base material.     2. T he t hermal conductivity is different.  The copper base PCB has the best thermal conductivity among the IMS boards, and the thermal conductivity is better than that of the aluminum PCB.     3.  The prices are different. Copper base PCB are the most expensive IMS boards, and aluminum PCB are relatively cheap.     4. The  technology  is different.  The al