Detailed explanation: Why is the PCB you bought so expensive?
The price of PCB is a lot of confusion for many buyers. Many people will question how these prices are calculated when they place an order online. Let's talk about the components of PCB price. Cooper Based PCB in china.
Different materials used in PCBs result 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 this creates a huge price difference in the sheet material; in terms of solder mask ink, there is also a certain price difference between ordinary thermosetting oil and photosensitive green oil. Aluminum Based Led PCB.
Different surface treatment processes result 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 higher the price of the above process, the more expensive.
Price diversity caused by the difficulty of the PCB itself
There are 1000 holes on the two types of boards. If one board has a hole diameter greater than 0.2mm and the other board has a hole diameter of less than 0.2mm, different drilling costs will be formed. If the two 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. PCB for Surveillance Products.
Different thickness of copper foil results 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.
Customer quality acceptance criteria
Commonly used are: IPC2, IPC3, enterprise standard, military standard, etc. The higher the standard, the higher the price.