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PCB is the support body of electronic components. Almost every kind of electronic equipment, from small electronic watches to calculators, large computers to communication electronic equipment, and military weapons systems, as long as there are integrated circuits and other electronic components, use PCB to interconnect them between the electrical interconnections.But
how much does a pcb cost
how much does a pcb cost
PCB cost comparison is made using many factors, including the following factors.
(1) the number of wiring layers: the more layers of design wiring, but the price is with the number of layers straight up, the final price of the board may have to double.
(2) over the hole: If not the device Pitch or design density limitations, as far as possible, with a diameter of 0.25mm or more over the hole, less than 0.25mm over the hole, the majority of PCB manufacturers need to charge a certain amount of money.
(3) hole in the disk hole plug hole: unless the signal and layout, packaging restrictions, try not to use.
(4) Back drilled holes: used in the backplane or a single board with high-speed signals, about 10% to 20% of the cost will increase.
(5) Line width line spacing: usually less than 3.5 mils or less, charges increase.
(6) Boards: high tg boards, halogen-free boards, high-frequency boards, and other non-conventional boards will increase the PCB manufacturer's procurement cycle, which means an increase in production costs. Some high-frequency boards can be mixed pressure with ordinary boards, which can reduce some of the production costs.
(7) HDI and blind buried hole design: increase the proportion of costs is very large if the package allows the best not to use. Tip: Pitch in 0.65mm and above BGA packages can be through-hole fan-out, part of the 0.5mm BGA package can be based on the pad size and the distribution of available pins to achieve through-hole fan-out. (7) The BGA package can be fan-out through-hole according to pad size and available pin distribution,
(8) Hole plugging requirements: resin plug holes, copper paste plug holes
(9) surface treatment: immersion gold, gold fingers, immersion silver, gold-plated, nickel-palladium gold, and other different surface treatment prices vary, involving gold surface treatment also depending on the thickness of gold and gold coverage.
(10) solder resist color: price and thickness also have a certain impact on the price.
(11) Size
(12) Number of layers: usually the same area, the more layers of PCB, the more expensive.
(13) Copper thickness: the thicker the copper, the higher the cost.
(14) Delivery: Rush orders or quick delivery requirements may result in additional cost increases.
(15) Test Method: Electronic testing using flying probe inspection is usually more expensive than optical testing.
In general, depending on the design of the PCB circuit board, the price will be due to the material of the PCB, the number of layers of the PCB, PCB size, the number of each production, the production process, the minimum line width and line spacing, the minimum aperture and the number of holes, the number of special processes and other requirements to determine. Currently, the industry has the following main ways to calculate the price: (1) Calculate the price according to the size. how much does a pcb cost
(1) Calculate the price according to the size (for samples of small quantities applicable)
Manufacturers will be based on different PCB layers and different processes to give the unit price per square centimeter. This calculation is very suitable for the ordinary process of PCB, both convenient for manufacturers and buyers. The following is an example: For example, a production plant pricing single panel, FR-4 material, 10-20 square meters of the order, the unit price of 0.04 yuan / square centimeter, this time, if the buyer's PCB size is 10 * 10CM, the number of production is 1000-2000 pieces, just meet this standard, the unit price is equal to 10 * 10 * 0.04 = 4 yuan a piece.
(2) according to the cost of fine-tuning the calculation of prices (for large quantities)
PCB circuit board raw materials are copper-clad board, production of copper-clad board factory has a fixed size in the market, common 915MM * 1220MM (36 “* 48”); 940MM * 1245MM (37 “* 49”); 1020MM * 1220MM (40 “* 48”); 1067mm * 1220mm (42 “* 48”); 1042MM*1245MM (41“49”); 1093MM*1245MM (43“*49”); manufacturers will be based on the material to be produced circuit boards, the number of layers, processes, quantities, and other parameters to calculate the utilization rate of this batch of circuit boards of copper-clad boards, to calculate the cost of materials, for example, is that you produce a piece of 100*100MM circuit boards, factories to improve For example, you make a 100 * 100MM circuit board, the factory to improve production efficiency may be spliced into 100 * 4 and 100 * 5 of the large board to produce. how much does a pcb cost