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Common PCB surface treatment process and its advantages and disadvantages and applicable scenarios

After we have drawn the PCB, we will send it to the PCB board factory for proofing or mass production. When we place an order for the board factory, we will attach a PCB processing technology description document, one of which is to indicate which one to use. PCB surface treatment process, and different PCB surface treatment process, will have a relatively large impact on the final PCB processing price, different PCB surface treatment process will have different charges, below we have some science terminology on PCB surface treatment process . Mobile Phone PCB supplier china.




First of all, why do you need special treatment on the PCB surface?


Because copper is easily oxidized in the air, the copper oxide layer has a great influence on the soldering, and it is easy to form false soldering and soldering. In severe cases, the pads and components cannot be soldered. Therefore, the PCB is manufactured. When there is a process, a layer of material is applied (plated) on the surface of the pad to protect the pad from oxidation. Impedance PCB manufacturer china.




At present, the PCB processing techniques of domestic board factories include: spray (HASL, hot air solder leveling), sinking tin, immersion silver, OSP (anti-oxidation), chemical immersion gold (ENIG), electroplating gold, etc. Of course, there are some special PCB surface treatments for special applications. Cooper Based PCB in china.




Compared with different PCB surface treatment processes, their cost is different, of course, the occasions used are different. Only the right ones are not expensive. At present, there is no perfect PCB surface treatment process suitable for all application scenarios (here is the price/performance ratio). That is, we can satisfy all PCB application scenarios at the lowest price, so there are so many processes to choose from. Of course, each process has its own merits. The existence is reasonable. The key is to know them. Good for them.