Valuation method and number of layers per square meter of PCB

　　The evaluation method of PCB is usually based on the utilization of the sheet. It is known that in the stamping production, the raw material cost of the workpiece accounts for about 60% of the manufacturing cost, so the utilization rate of the sheet can be simplified for the price per square meter of the PCB. Valuation, the following is a detailed introduction by H.C.C  Engineering Department.

　　H.C.C Engineering Department "based on 1 square meter plate, its size is 1020mm*1020mm

　　Assume that the PCB length is L and the width is H. The 1 square meter substrate can be used to produce this board.

　　The quantity is (1020/L+5)*(1020/H+5)=Z (that is, the number of layouts)

　　Unit price =X/Z

　　X is the following price:

　　The price per square PCB material price is as follows:

　　1L FR-1 price per square meter (including processing fee): 130RMB

　　2L FR-4 price per square meter (including processing fee): 430RMB

　　4L FR-4 price per square meter (including processing fee): 720RMB

　　6L FR-4 price per square meter (including processing fee): 1200RMB

　　8L FR-4 price per square meter (including processing fee): 1800RMB

　　10L FR-4 price per square meter (including processing fee): 3500RMB

　　12L FR-4 price per square meter (including processing fee): 5500RMB

　　The evaluation method of PCB layer number is as follows:

　　The first unit price of the 2-layer board = (length * width * 0.12 * quantity + length * width * 0.12 * 4 + 80) / quantity

　　The second unit price of the 2-layer board = (length * width * 0.12 * quantity + 80) / quantity

　　Unit price of four-layer board = (length * width * 0.6 * quantity + length * width * 0.12 * 6 + 1500 + 300) / quantity

　　Four-layer board 2 times unit price = (length * width * 0.6 * quantity + 300) / quantity

　　Unit price of six-layer board = (length * width * 0.8 * quantity + length * width * 0.12 * 8 + 1800 + 300) / quantity

　　Six-layer board 2 times unit price = (length * width * 0.8 * quantity + 300) / quantity

　　Therefore, in general, the price of PCB board is mainly related to the length and width of the board and the number of layers. If it is the final price, it is also necessary to consider the process cost.