SMT chip processing has an important indicator for processing quality evaluation, that is, the straight-through rate. In the patch processing. SMT process pass rate refers to the proportion of one-time qualification from production to the last process.
PCB design is a very detailed work, so the design should be very careful and patient, fully considering various factors, including production PCB assembly processing, post-maintenance convenience and other issues. In addition, developing some good working
In the welding process of SMT patch processing, the substance that can purify the welding metal and welding surface and help welding is called flux, referred to as flux.
The company gives full play to its competitive advantages in scale procurement and quality control, and has signed long-term cooperation agreements with many electronic component manufacturers at home and abroad and around the world to ensure the quality
Shenzhen circuit board assembly and processing manufacturers, providing one-stop services from upstream electronic component procurement to PCB production and processing, SMT patch, DIP plug-in, PCBA testing, finished product assembly and so on.
PCB DIP plug-in processing is a very important process in PCBA chip processing, and its processing quality directly affects the functional properties of , so it is necessary to pay more attention to the DIP plug-in process.
Will the design error of screen printing position number affect PCBA patch processing? It can be clearly said that the screen printing position number does not determine whether the final patch is correct.
In PCBA processing, automatic optical inspection is usually set at the last step of the SMT production line, and it is necessary to detect the defects of the product after the completion of the SMT processing process.
R107, C118, Q102, D202 and other numbers are often seen on the PCB board. In general, the first letter identifies the device category, such as R for resistor, C for capacitor, D for diode, Q for transistor, etc.
Poorly welded electronic components. In the face of this situation, we generally remove poorly welded electronic components without damaging the PCB board.
Since the BOM list provided by the customer is not perfect, the general SMT patch processing plant needs to be converted into the form of internal company files for issuance
Dispensing: Dispensing is to drop red glue to the fixed position of the circuit board, and its main function is to fix the components to the PCB board. This is an optional process, mainly for heavy devices on the board, the use of red glue process can inc
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