Analysis of the causes of PCB price differences
- Release on:2018-11-16
The cost calculation of the PCB industry is the most special and complicated in all industries. From material cutting, pressing, forming, to FQC, packaging, and finishing, it is necessary to invest in material costs, labor costs, manufacturing costs, etc. for each process. Perform step-by-step accounting and then accumulate costs based on the order product number. And for different types of products, the standard rate of the process will be different. For some products, such as blind buried plate, immersion gold plate, and copper plate, due to the special nature of the process or all materials, it is required to adopt some special calculation methods. Similarly, the size of the drill used in the drilling process will also affect the cost of the product, which directly affects the calculation and evaluation of WIP costs and scrap costs.
First, the materials used in PCBs cause different price diversities.
Taking ordinary double-panel as an example, the sheets generally have FR-4, CEM-3, etc., the thickness ranges from 0.6mm to 3.0mm, and the copper thickness varies from Oz to 3Oz, all of which are caused by the sheet material. Huge price difference; in terms of solder mask ink, there is a certain price difference between ordinary thermosetting oil and photosensitive green oil, so the difference in materials causes price diversity.
Second, the different production processes used by PCBs result in price diversification.
Different production processes can result in different costs. Such as gold-plated plate and tin-plated plate, the shape of the fascia board and the beer board, the use of silk screen lines and dry film lines will form different costs, resulting in price diversity.
Third, the price diversity caused by the difficulty of the PCB itself.
Even if the materials are the same and the process is the same, the difficulty of the PCB itself will result in different costs. For example, if there are 1000 holes on both boards, the hole diameter of one plate is larger than 0.6mm and the hole diameter of the other board is less than 0.6mm, which will form different drilling costs; if the two boards are the same, but the line width is the same Different, one is greater than 0.2mm, and one is less than 0.2mm, which will also result in different production costs. Because the difficulty of the board is higher, the cost will increase, which will result in price diversity.
Fourth, 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 has a 98% pass rate according to IPC-A-600E, class1 requirements, but only a 90% pass rate may be required according to class 3, thus causing different costs for the board factory. Finally, the price of the product is variable. （High Tg PCB manufacturer china）
5. The price diversity caused by different PCB manufacturers.
Even the same product, but because of different manufacturers' process equipment and technical level, different costs will be formed. Many manufacturers nowadays prefer to produce gold-plated plates. Because of the simple process and low cost, some manufacturers also produce gold-plated plates, which will rise when scrapped. The cost is increased, so they prefer to produce tinplate, so their tinplate prices are lower than goldplates.