Cleaning before and after PCBA assembly

With the increasingly strict quality requirements for PCB in high-performance and highly reliable electronic products, cleanliness is a key parameter requirement for evaluating pcb assembly china.

Before assembling the PCB, it is necessary to clean and inspect the PCB board to ensure that there are no dirt, oxides, or damage issues. At the same time, it is necessary to check the size and position of the PCB board to ensure that the components can be installed and soldered correctly.

2. After the PCBA assembly is completed, it is necessary to ensure the high reliability, electrical performance stability, and service life of the PCB, improve the appearance quality of the PCB, avoid pollutant pollution and the resulting electromigration, electrochemical corrosion, and circuit failure. It is necessary to clean the solder paste residue, flux residue, oil stains, dust, solder pad oxide layer, fingerprints, organic pollutants, and particles after the PCBA assembly and welding process.