PCB Fabrication

Briefly analyze the composition of PCB prices

by:A-TECH      2021-03-19
The price of PCB is something that many buyers have been confused about. Many people will also wonder how these prices are calculated when placing orders on the pcb website. Let's talk about the components of PCB prices together. 1. The price diversity caused by the different materials used in pcb. Take ordinary double-sided boards as an example. The sheet materials are generally fr-4, cem-3, etc. The thickness of the board varies from 0.6mm to 3.0mm, and the copper thickness varies from ½oz to 3oz. All these have caused a huge price difference in the sheet material; in terms of solder mask ink, there is also a certain price difference between ordinary thermosetting oil and photosensitive green oil, so the difference in materials has caused the price diversity. , The different production processes used by pcb cause the price diversity and different production processes will cause different costs. For example, gold-plated boards and tin-sprayed boards, the production of gongs (milling) boards and beer (punching) boards, and the use of silk-printed lines and dry film lines will cause different costs, resulting in a variety of prices. Third, the price diversity caused by the different difficulty of the pcb itself Even if the material is the same and the process is the same, the different difficulty of the pcb itself will cause different costs. For example, there are 1000 holes on two kinds of circuit boards, and the hole diameter of one board is larger than 0.6mm and the hole diameter of the other board is smaller than 0.6mm, which will result in different drilling costs; for example, the two kinds of circuit boards are the same but the line width and line spacing Different, one is greater than 0.2mm, and the other is less than 0.2mm, which will also cause different production costs, because the difficult board has a higher scrap rate, which will inevitably increase the cost, and thus cause the price diversity. 4. Different customer requirements will also cause different prices. The level of customer requirements will directly affect the yield of the board factory. For example, a board according to ipc-a-600e, class1 requires 98% pass rate, but according to class3 requirements may only be 90% The qualified rate of the board, which results in different costs for the board factory, and finally leads to the variability of product prices. 5. The price diversity caused by different pcb manufacturers. Even the same product will have different costs due to the different process equipment and technical levels of different manufacturers. Nowadays, many manufacturers like to produce gold-plated plates because the process is simple and the cost is low, but there are also Some manufacturers produce gold-plated panels, which will increase when scrapped, resulting in higher costs. Therefore, they prefer to produce tin-sprayed panels, so their quotation for tin-sprayed panels is lower than that of gold-plated panels. 6. The price difference caused by different payment methods At present, pcb board manufacturers generally adjust the price of pcb according to the different payment methods, ranging from 5% to 10%, which also causes price differences. 7. Different regions cause price diversification. At present, in terms of geographic location, prices in China are increasing from south to north. There are certain differences in prices in different regions. Therefore, regional differences also result in price diversification. From the above discussion, it is not difficult to see that the diversity of PCB prices has its inherent inevitable factors. This column can only provide a rough price range for reference. Of course, the specific price is still in direct contact with the manufacturer.
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