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Cause Analysis Of PCB Price Difference
- May 16, 2017 -

The cost calculation of PCB industry is the most special in all industries. The most complex, from the open material, the platen, forming, has been to FQC, packaging, as finished, needs to be based on the input of each process of material costs, labor costs, manufacturing costs and other step-by-step accounting, and then based on the order product number of the cumulative cost of batches.
and different types of products, the standard rate of the operation will be differentiated. For some products such as blind hole plate, sinking gold plate, pressure copper plate, because of its craft or the particularity of all materials, it is necessary to adopt some special methods. Similarly, the size of the drill nozzle used in the drilling process affects the cost of the product, which directly affects the calculation and evaluation of WIP cost and scrap cost.

The industry has specially compiled a PCB price impact factors, and you share here, for reference only.

One, PCB materials used differently caused by the diversity of prices.
To ordinary double-panel as an example, the sheet is generally FR-4,CEM-3 and so on, the thickness of the plates ranging from 0.6mm to 3.0mm, copper thick from Oz to 3 oz different, all of these in the sheet on an item caused a huge price difference; in the solder mask inks, common hot-solid oil and photosensitive green oil also exist a certain price difference, thus the different materials caused the price diversity.

Second, the PCB used in the production process of different price diversification.
Different production processes can lead to different costs. such as gold plate and spray tin plate, the production of the Shape of the gong (milling) plate and beer (punching) board, the use of silk screen and dry film lines will form a different cost, resulting in a variety of prices.

Third, the difficulty of the PCB itself caused by different price diversity.
Even if the material is identical, the craft is identical, but the PCB itself difficulty differs also can cause the different cost. If both circuit boards have 1000 holes, a plate diameter is greater than 0.6mm and another plate aperture is less than 0.6mm will form different drilling costs; If two kinds of circuit boards other identical, but the line width is different, one is more than 0.2mm, one is less than 0.2mm, also can cause different production cost, because the difficulty big board scrap rate is higher, the inevitable cost increases, thus causes the price diversity.

Fourth, the different customer requirements will also result in different prices.
Customer requirements will directly affect the quality of the plate mill's yield, such as a plate according to the IPC-A-600E,CLASS1 requirements of a 98% percent rate, but according to CLASS3 requirements may only 90% percent of the passing rate, resulting in the board plant different costs, and finally led to the changeable price.

Fifth, PCB manufacturers of different price diversity.
Even if the same product, but because of different manufacturers process equipment, technical level, will also form different costs, nowadays many manufacturers like to produce gilt plates, because the process is simple, low cost, but also some manufacturers to produce gilt plates, scrap is rising, resulting in increased costs, so they would rather produce tin plate, so their spray tin plate quotation is lower than the gilded plate.

6. The price difference caused by different payment methods.
At present, PCB board factory generally in accordance with the different methods of payment adjustment of the price of PCB, range of 5%-10% unequal, thus also caused the difference of prices.

VII. Diversity of prices caused by different regions
At present, from the geographical location, from the south to the north, the price increases the potential, different regional prices have a certain difference, thus regional differences also caused the price diversity how to calculate the PCB quote!
In addition, there are the following factors:
1, the board costs (different plates costs are different)
2, drilling costs (the number of holes and the size of the aperture affect drilling costs)
3, process costs (the different process requirements of the Board lead to different processes, and prices will vary)
4, artificial hydropower and management costs (this cost will look at the cost of each factory control)

On the PLATE: the impact of the price mainly with the following points:
1, sheet Material: FR-4,CEM-3, this is our common double-sided with multilayer plates, his price is also with the thickness of the plate and the middle of copper-platinum, and FR-I,CEM-1 These are our common single and plate material, and the price of this material is also compared with the above double-sided, multi-layer board a large difference.
2, is the thickness of the plate, its thickness we are common: 0.4,0.6,0.8,1.0,1.2,1.5,1.6,2.0,2.4,3.0,3.4, and our regular plate thickness price difference is not very large.
3, is the thickness of the copper platinum will affect the price, copper and platinum thickness generally divided into: 18 (2/1OZ), 35 (1OZ) 70 (2OZ), 105 (3OZ), 140 (4OZ), etc.
4. Suppliers of raw materials.

Process Cost:
1, to see the PCB above the lines, such as line-tight line (in 4/4mm), the following words, the price will be counted;
2, there is the board surface has BGA, that cost will also rise relatively, some place is BGA another calculate how much money one;
3, to see what surface treatment process, we are common: spray lead tin (hot air leveling), OSP (Environmental Protection Board), spray pure tin, tin, silver, gold and so on, of course, the surface process is different, prices will be different.
4, also to see the process standards; we are commonly used to: IPC2 level, but there is a higher customer requirements, (such as Japanese) We are common: IPC2, IPC3, Enterprise standard, military standard, and so on, of course, the higher the standard, the higher the price.