Where is the high cost in PCBA processing

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To understand the high cost of PCBA fast PCB manufacturing processing, we need to decompose the entire PCBA package of labor and materials. PCBA (PCB Assembly) means PCB assembly, so it must include circuit board light board, component welding (SMT surface mount For these two parts, the price of light boards on the market is between 350-550, and the prices of components are basically open and transparent in major shopping malls, so you can compare them for reference.

Since the main PCB circuit boards and components are not likely to increase prices in the dark, the cost is reflected in the assembly process. The main costs of this link are in the following four aspects:
1. Auxiliary materials: solder paste, tin bar, flux, UV glue, furnace fixture
The quality of solder paste and solder bars is the most important auxiliary material in the whole process. Generally, the price of domestic solder paste is 180~260/bottle, and the imported solder paste may be 320~480/bottle, so on the same soldering area, The price of imported solder paste is much higher, but the difference in soldering quality is very obvious.
2. smt patch processing
The price of SMD processing varies according to the number of points and packaging. Large quantity and high price are the consensus of the industry. The larger the package size, the easier it is to mount, and the corresponding poor quality will be reduced. Therefore, there is more room for communication on the price.
3. Welding hours after DIP plug-in
Because the plug-in material link involves special-shaped parts and material forming, this link requires a lot of manual participation, because there is no reference to the production capacity of machinery and equipment, this link is the link with the most difficult to control cost. At the same time, labor costs remain high at present, and the cost of this link is generally high.
4. Assembly test: test fixture, test equipment, test man-hour
The test fixture currently ranges from tens to PCBA china hundreds of dollars depending on the difficulty of the test, and the test of communication equipment requires the assistance of optical fiber, ICT and other test equipment. The corresponding labor and equipment loss need to be taken into account, but it will not be very high. Some companies even test it for free.