The purchasing staff of electronic factory have been puzzled by the changeable price of PCB, even if some have been for many years In fact, PCB price is composed of the following factors:
一、Different materials used in PCB lead to price diversity
taking ordinary double-sided board as an example, the board materials generally include FR-4, CEM-3, etc., and the board thickness ranges from 0.6mm to 0.6mm 3.0 mm,copper thickness from 1 / 2 oz to 3 oz, all of which cause a huge price difference in sheet metal; in solder mask ink, there is a certain price difference between ordinary thermosetting oil and photosensitive green oil, so the different materials cause price diversity.
二、PCB The different production processes lead to the diversity of price
Different production processes cause different costs. Such as gold plate and tin spray board, the shape of the gong (milling) board and beer (punching) board, the use of screen printing lines and dry film lines will form different costs, resulting in the diversity of prices.
三、Price diversity caused by different difficulty of PCB
even if the materials are the same and the process is the same, the difficulty of PCB itself will cause different costs. If there are 1000 holes in both lines boards, the drilling cost of different will be formed if the hole diameter of one board is greater than 0.6mm and that of the other is less than 0.6mm; For example, the other two boards are the same, but the line width is different, one is greater than 0.2mm, and the other is less than 0.2mm, which will also cause different production costs. Because the difficult Board report waste rate is high, the cost will increase inevitably, which will lead to the price diversity of
四、Different customer requirements will also cause different prices
the level of customer requirements will directly affect the finished product rate of the board factory. For example, a board has 98% qualification rate according to ipc-a-600e and Class1, but only according to the requirements of class3 90% pass rate, which leads to different cost of plate factory, and finally leads to the change of product price.
五、Price diversity caused by different PCB manufacturers
Even if the same product is the same, different versions will be formed due to different manufacturers' technological equipment and technical level. Nowadays, many manufacturers like to produce gold plating plates. Because of the simple process and low cost, some manufacturers also produce gold-plated plates, which will increase the cost if they report waste, which will lead to higher cost. Therefore, they prefer to produce tin spray plates, so their tin spray Board report will be reported The price is lower than that of gold plating plate.
六、Price difference caused by different payment methods
At present, PCB board manufacturers generally adjust PCB prices according to different payment methods, ranging from 5% to 10%, which also causes price differences.
七、Different regions cause price diversity
At present, in terms of geographical location in China, prices are increasing from south to north. Different regions have certain differences in prices, and regional differences also result in price diversity.