PCB circuit board processing is the product of OEM customers, not the same customer customized products are different, there are few shared products, on the other hand, out of quality thinking, some customers may also specify the use of a manufacturer's substrate, or ink, etc., in order to achieve its quality and cost control requirements, so PCB processing there are variable prices.
PCB price is composed of the following factors:
1. PCB materials used are not the same, resulting in price diversity.
Taking the usual double panel as an example, the plate generally has FR-4, CIM-3, etc., the plate thickness is not equal to 0.6mm to 3.0mm, the copper thickness is not the same from 1Oz to 3 Oz, all of these have led to a great price difference in the plate; In terms of solder resistance inks, there is also a certain price difference between ordinary thermosetting oil and photosensitive green oil, so the difference in materials leads to the diversity of prices.
2. PCB is considered appropriate and the use of different production processes lead to the diversity of prices.
Different production processes will lead to different costs. Such as gold-plated plate and tin-spray plate, manufacturing shape of gong (milling) plate and beer (punching) plate, think that appropriate and the use of silk screen lines and dry film lines will form different costs, resulting in price diversity.
3. the price diversity caused by the different degree of difficulty of PCB itself.
Although the material is the same, the process is the same, but the PCB itself is not the same difficulty will lead to different costs. If there are 1000 holes on both types of circuit boards, the aperture of one board is greater than 0.6mm and the aperture of the other board is less than 0.6mm, it will form a different drilling cost; If the other two kinds of circuit boards are the same, but the line width and line distance are not the same, one is greater than 0.2mm, one is less than 0.2mm, it will also lead to different production capital, due to the difficulty of the blackboard scrap rate is higher, the cost will increase, and continue to lead to the diversity of prices.
4. different customer requirements will also lead to different prices.
The level of customer requirements will directly affect the yield of the board factory, such as a board according to IPC-A-600E, class1
The requirement has 98 percent compliance with the standard rate, but according to class3 requirements may only meet the standard rate of 90 percent, which leads to different costs of the board factory, and ultimately causes the price of the product to change.
5. PCB manufacturers are not the same resulting in price diversity.
Even if the same product, but because different manufacturers process equipment, technical level is not the same, will form different costs, many manufacturers like to produce gold-plated plate, due to the simple process, low cost, but there are also a small number of manufacturers produce gold-plated plate, waste is rising, resulting in cost growth, so they would rather produce tin-spray plate, Therefore, the price of their spray tin blackboard is lower than the gold plate.
6. Price difference caused by different forms of payment.
Up to now, PCB manufacturers generally debug PCB prices according to the different forms of payment, the range is 5%-10%, which also leads to the difference in price.
7. Different regional ranges lead to diversity of prices.
Up to now, from the geographical position of the country, from the south to the north, the price is reported to increase, there is a certain difference in the price of different regions, so the regional range is not the same, which also led to the diversity of the price how to calculate PCB quotation!
7.1. Board cost (Different board cost is different)
7.2. drilling costs (the number of holes and aperture volume light drilling costs)
7.3. the cost of the process (the different process requirements of the wrench cause the difficulty of the process is not the same, and the price will be different)
7.4. artificial water and electricity plus management costs (this cost depends on the cost of various factories, relatively speaking, Taiwan-funded factories on the low multinational) basic performance of these, as for the price of raw materials, now basically tend to be stable, the possibility of price increases half.
8. As far as board materials are concerned, the price is mainly affected by the following points:
8.1. sheet material material: FR-4, CEM-3, this is our common double-sided and multi-layer sheet material, his price is also related to the thickness of the plate and the plate mid-waist copper platinum thickness, and FR-I, CEM-1 these are our common single and sheet material, and the price of this material is also higher than the double-sided, multi-layer board difference is very large.
8.2. is the thickness of the board, its thickness is our common is: 0.4, 0.6, 0.8, 1.0, 1.2, 1.5, 1.6, 2.0, 2.4, 3.0, 3.4, and our common plate thickness price difference is not often large.
8.3. the thickness of copper platinum will affect the price, copper platinum thickness is generally divided into: 18 (2/1OZ), 35 (1OZ) 70 (2OZ), 105 (3OZ), 140 (4OZ) and so on
9. Other factors of PCB circuit board manufacturing
9.1. depending on the PCB above the line, such as the line dense line thin (in 4/4mm) below, the price will be calculated separately
9.2. there is a board with BGA, that way the cost will rise relatively, and some places are BGA another number of money.
9.3. to see what is the appearance of the disposal process, we commonly have: spray lead tin (hot air leveling), OSP (environmental protection board), spray pure tin, tin, silver, gold, etc., of course, the appearance of the process is not the same, the price will be different.
9.4. but also look at the process standards; We commonly use: IPC2 level, but there are customers will be higher requirements, (than such as Japanese) our common are: IPC2, IPC3, enterprise standards, military standards, etc., of course, the higher the standard, the higher the price will be.
Every PCB circuit board sold in the industry is customized, because of this, the quotation of the PCB circuit board needs to be advanced line cost calculation, but also needs to refer to the PCB circuit board computer semi-automatic layout calculation, and make a comprehensive quote on the material utilization rate of the standard size of the copper-clad plate.
The cost calculation of PCB circuit board is the most especially and most complex in the whole industry, from the opening, pressing, forming, until FQC, packaging, completion and warehousing, the demand is calculated step by step according to the material cost, labor cost, production cost, etc. invested in each process, and then the total cost in batches according to the order product number. Moreover, different types of products, the standard rate of their processes will be different. For some products such as blind hole plate, gold plate, copper plate, because of the special nature of its process or all materials, it is necessary to consider this appropriate and use a special calculation method. Similarly, the drill nozzle volume used in the drilling process will also affect the cost of the product, which directly affects the calculation and evaluation of WIP cost and waste cost.
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