Procurement staff have been confused by the PCB price changes, even if some of the years of PCB purchasing experience so far may not be fully aware of the origin of this, in fact, PCB prices are composed of the following factors:
This is the first time in the world that a PCB is used in a different material to cause price diversity
First, PCB materials used in different price diversity
To the ordinary double-sided board, for example, plate material generally FR-4, CEM-3, etc., plate thickness from 0.6mm to 3.0mm, copper thickness from 0.5Oz, 1 Oz, 2Oz to 3 Oz different, all of which in the plate material on a huge price difference; in the plate manufacturer prices are different, the plate Level prices are not the same caused by the huge price difference, in the line ink (silkscreen circuit board exposure, dry film circuit board, caused by the price difference), soldermask photopolymerization oil manufacturers are different, there is also a certain price difference, and thus the different materials caused by the diversity of prices.
Two, the PCB production process used by the different price diversity
Different production processes will result in different costs. Such as gold-plated boards and tin spraying boards, the production of the shape of the gong (milling) board and beer (punch) boards, the use of silk-screen lines and dry film lines and so on will form a different cost, resulting in price diversity.
Third, the PCB itself is difficult to different price diversity
Even if the same material, the same process, but the PCB itself is difficult to different costs. Such as two kinds of circuit boards have 1000 holes, a board aperture are greater than 0.6mm with another board aperture are less than 0.6mm will form different drilling costs; such as two kinds of circuit boards are the same, but the line width line spacing is different, one are greater than 0.2mm, one are less than 0.2mm, will also result in different production costs, because of the difficulty of the board's high scrapping rate, the inevitable increase in the cost, and thus cause price diversity. And then cause the diversity of prices.
Four, different customer requirements will also cause the price of different
Customer requirements of the high and low will have a direct impact on the board factory's yield, such as a board according to the IPC-A-600E, class1 requirements have a pass rate of 98%, but according to the requirements of the class3 may only be 90% of the pass rate, resulting in the board factory of different costs, and ultimately lead to the price of the product varied.
Fifth, the price diversity caused by different PCB manufacturers
Even if the same product, but because of different manufacturers of process equipment, different levels of technology, but also the formation of different costs, many manufacturers like to produce gold-plated boards, because of the process is simple and inexpensive, but there is also a portion of the manufacturers to produce gold-plated boards, scrapping that is, resulting in increased costs, so they would rather produce Tin spray board, and thus their tin spray board offer instead of lower than the gold-plated board.
Six, different payment methods caused by price differences
Currently, PCB manufacturers will generally adjust the price of PCB according to the different payment methods, ranging from 5% -10%, thus also causing the price difference.
Seventh, the region caused by the diversity of prices
Currently the country from the geographic location, from south to north, the price is increasing trend, the price of different regions have a certain degree of difference, and thus the region also caused by the diversity of prices.