1、 The different materials used in the PCB circuit board of mobile phone charger lead to the diversity of prices
Taking ordinary double-sided board as an example, the board materials generally include FR-4, CEM-3, etc., the thickness of the board ranges from 0.6mm to 3.0mm, and the thickness of copper is different and ranges from ½ Oz to 3 oz , all of which cause huge price differences in sheet metal; In terms of solder resist ink, there is also a certain price difference between ordinary thermosetting oil and photosensitive green oil, so the different materials lead to the diversity of prices.
2、 The different production processes of mobile phone charger PCB lead to the diversity of prices
Different production processes will cause different costs. For example, gold-plated board and tin spray board, gongs (milling) board and beer (punching) board, silk screen line and dry film line will form different costs, resulting in price diversity.
3、 Price diversity caused by different difficulties of mobile phone charger PCB
Even if the materials and processes are the same, the difficulty of PCB itself will cause different costs. If there are 1000 holes on both kinds of circuit boards, the hole diameter of one board is greater than 0.6mm and that of the other board is less than 0.6mm, different drilling costs will be formed; If the two kinds of circuit boards are the same, but the line width and line distance are different, one is greater than 0.2mm and the other is less than 0.2mm, it will also cause different production costs. Because the scrap rate of difficult board newspaper is high, the cost will inevitably increase, resulting in the diversity of prices.
4、 Different price requirements of customers
The level of customer requirements will directly affect the yield of the pcb factory. For example, a kind of pcb is required to have a pass rate of 98 % according to ipc-a-600e and class 1, but it may only have a pass rate of 90% according to class 3, resulting in different costs of the plate factory and finally the variability of product prices.
5、 Price diversity caused by different PCB manufacturers of mobile phone charger
Even for the same product, due to different process equipment and technical level of different manufacturers, different costs will be formed. Nowadays, many manufacturers like to produce gold-plated plates, because the process is simple and the cost is low. However, some manufacturers produce gold-plated plates, which will rise when scrapped, resulting in increased costs. Therefore, they prefer to produce tin sprayed plates, so their quotation of tin sprayed plates is lower than that of gold-plated plates.
Post time: Mar-28-2022