Introduction of FPC manufacturing and assembly process FPC is also known as flexible circuit board, FPC PCBA assembly welding process and hard circuit board assembly is very different, because the hardness of THE FPC board is not enough, more soft, if you do not use a special carrier, can not complete the fixation and transmission, …
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Defective phenomenon of pcba board 1. Too much residue on pcbA board Too much residue on the board may be caused by not preheating before soldering or the preheating temperature is too low, the temperature of the tin furnace is not enough; the speed of the board is too fast; the anti-oxidant and anti-oxidant oil …
Classification and selection of PCB materials 1. The FR-4 we often choose is not a material name What we often refer to is “FR-4” is the code name of a kind of flame-resistant material grade. It represents a material specification that the resin material must be able to extinguish by itself after burning. It is …
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What are the FPC soft board mounting processes in SMT production? In the SMT production line, the process of mounting SMD on flexible printed circuit boards (FPC) requires the development of miniaturization of electronic products, and a considerable part of the surface mount of consumer products, due to the assembly space, their SMDs are all …
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What are the PCBA circuit board test methods？ PCBA circuit boards involve many circuits and components, and testing is extremely important, which is related to the straight-through rate and delivery quality of the product. The current mainstream 5 circuit board test methods are: 1. Manual visual test Manual visual testing is to confirm the placement …
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What are the advantages and disadvantages of the surface treatment process of HASL, ENIG, and OSP circuit boards? After we design the PCB board, we need to choose the surface treatment process of the circuit board. The commonly used surface treatment processes of the circuit board are HASL (surface tin spraying process), ENIG (immersion gold …
What are the characteristics of SMT surface assembly? As a new generation of assembly technology, SMT technology has only a history of more than 40 years, but this technology has fully demonstrated its strong vitality when it was born. It has completed the journey from birth, perfection to maturity at an extraordinary speed. Entered the …
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What are the specific steps for PCB copying? The technical realization process of PCB copy board is simply to scan the circuit board to be copied, record the detailed component location, and then remove the components to make the bill of materials (BOM) and arrange the material purchase, and the empty board is The scanned …
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8 basic conditions for PCBA manufacturing design. 1. Optimizing surface assembly and crimping components Surface mount components and crimping components have good manufacturability. With the development of component packaging technology, most components can be purchased in packaging categories suitable for reflow soldering, including plug-in components that can be soldered by through-hole reflow soldering. If the …
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What are the PCBA assembly manufacturing methods and steps? Everyone knows that the benefits of a PCB board to us are beyond words, and it can be clearly judged that the use of PCBA is also very good, but the understanding of the corresponding PCBA assembly and manufacturing methods and steps is also very important. …
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What are the operating procedures and precautions for SMT high-speed placement machines? In general, a placement machine with a theoretical placement speed of 30 000 to 60 000 pieces/h per hour is called a high-speed placement machine, which is mainly used for placement of small chip components and small integrated components. However, during the operation …
What is basking in the sun in PCB screen printing? There are many small operations in these two areas, let’s take a look 1. Steps for net pulling: net cleaning-level inspection-primer application-net pulling-tension-viscose-netting, sealing edge-storage how to do: Due to the repeated use of the net cage, the residual adhesive, net yarn and other debris …
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