The main factor affecting PCB price is to find the answer from materials and technology. Some PCBs of the same kind of PCB may have high PCB price, some offer is very low, and there are two kinds of price difference comparison, which may be because of its materials and processes. The above differences result in two different prices. Below, Hengtian Weiye engineers will tell you about the specific price difference.
1, the material used in PCB is different, resulting in price diversity
For ordinary double-panel, for example, the sheet material generally has FR4 (shengyi, Jianye, Guoji, three prices from top to bottom), the thickness ranges from 0.2mm to 3.0mm, and the thickness of copper varies from 0.5oz to 3oz. All of these have caused huge price differences in the sheet material; in the case of solder resist inks, there is also a certain price difference between ordinary thermosetting oil and photosensitive green oil.
2, the surface treatment process is different, resulting in price diversity
Common ones are: OSP (anti-oxidation), lead-spray tin, lead-free spray tin (environmental protection), gold plating, immersion gold and some combination processes, etc., the more expensive the above process price.
3, the price diversity caused by the difficulty of the PCB itself
There are 1000 holes on both boards. If the hole diameter of one plate is larger than 0.2mm and the hole diameter of the other plate is less than 0.2mm, different drilling costs will be formed. If the two circuit boards are the same, but the line width is different, one The species are more than 4 mils, one is less than 4 mils, which will also cause different production costs. Secondly, some designs that do not take the ordinary board process are also added, such as half holes, buried holes, holes in the plate, buttons The board is printed with carbon oil.
4, the thickness of copper foil is different, resulting in price diversity
Common copper and platinum thicknesses are: 18um (1/2OZ), 35um (1OZ), 70um (2OZ), 105um (3OZ), 140um (4OZ), etc. The thickness of the above copper foil is more expensive.
5, mold fee and test stand
(1) Mold cost, sample and small batches. If the general board factory adopts the drilling and milling shape, it will not add additional milling edge fees. When doing large quantities, it is required to open the mold punching plate, so there is a set of mold costs. The board factory generally quotes at RMB 1,000.
(2) Test fee: The sample board generally adopts the flying needle test. The board factory generally charges the test fee of 100-400 yuan; the batch is to open the test frame to measure, and the test frame general board factory price is between 1000-1500 yuan.
6, order volume / delivery
(1) The smaller the quantity, the more expensive the price is, because even if it is 1PCS, the board factory has to do engineering materials, and the film is out of the film.
(2) Delivery: The data delivered to the PCB factory should be complete (GERBER data, board number, board, board thickness, surface treatment, ink color, character color and some special requirements should be clearly written)
The main factors that basically affect the price difference of PCB are probably the above points. Hengtian Weiye Technology Friendship Tips, the less the quantity, the cheaper the price, the higher the unit price will be, because the small batch of boards, the factory needs to help you. Out of engineering materials, film, testing, abrasives, etc., these processes will increase the cost, so when you set the PCB small batches, you must be psychologically prepared, but usually the PCB price will not be much higher.