When SMT components are placed, connectors are placed first, followed by power circuits, sensitive and precision circuits, critical circuit components, and any other required components. You are selecting route priorities based on power level, noise sensi
Nowadays, more and more intelligent electronic products, PCBA control board plays an important role in it, and there will be all kinds of problems in PCBA processing, let kinhford Electronic Technology Co., Ltd. to introduce PCBA processing short-circuit
Three anti-paint coating is the last link of SMT patch. If there is no mistake in the previous welding and testing assembly, we can ship after this process is completed. Manual coating and machine spraying are two common three anti paint coating methods,
First, the cause of virtual welding/false welding?The oxidation of the pad and the pin of the component is easy to cause that the solder paste in the state of liquefaction cannot fully infiltrate the pad and climb the tin during reflow welding, resulting
A similar approach is used for SMT patch components with multiple pins and wide spacing. First, the pad is tinned, then one foot is welded with a tweezer holding the piece in the left hand, then the other foot is welded with a tin wire. It is usually best
When welding, we should ensure that there is tin around the solder joint to prevent virtual welding, but it is not the more tin the better, when the solder joint tin cone layer is the best. When welding the circuit board, it is also necessary to pay atten
The current design of this wrist sphygmomanometer solution, can provide the main control chip (IC), with the production materials of PCBA, or provide the module (PCBA), with complete operation instructions and technical solutions, to cooperate with the fa
Because the solder joints and parts are very small, it is very difficult to use manual welding. However, if you consider the current PCBA assembly is fully automatic, this problem will only occur when repairing parts.
with the eyes to observe the appearance of the circuit board, such as thickness, size and so on whether meet the requirements, if not, it needs to be remade, with the board market competition is becoming more and more fierce, some manufacturers in order t
First, use short-circuit positioning analyzer to detect faults.Second, open the drawing on the computer, and then light the short-circuit network to see which position is the closest, need to pay special attention to the IC internal short circuit.
coating thickness: if you want to get a thicker coating, by coating two layers of thin coating to obtain, and must be in the first layer of completely cured before allowed to coat the second layer; the thickness of the film layer: the addition of diluent
In the printing process, the pressure of the scraper should be adjusted, the appropriate steel mesh should be selected, and the steel network port should not be too small to avoid the situation of too little tin.adjust the reflow welding temperature curve
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