PCB Blogger-China PCB Factory,HOYOGO

       In the PCBA processing process, many  technologie s will cause a certain degree of pollution to the PCBA.   The presence of these pollutants will not only affect the appearance of the PCBA, but also negatively affect the performance of the PCBA. Therefore, it is very important to clean the PCBA.       PCBA pollutants mainly include polar pollutants, non-polar pollutants and particle pollutants.     Polar pollutants are mainly oxides of electronic components or PCB, active agent residues in flux, sweat or fingerprints of operators, and solder residues.   Such pollutants will cause the component pins to be corroded, and will also cause the PCBA circuit to fail, and will also cause delamination of the PCBA and the conformal coating.     Non-polar pollutants are mainly rosin residues in flux, adhesive residues, operator fingerprint grease, and anti-oxidation oil residues. Such pollutants will affect the conductivit...

      After the PCBA is processed and welded, some flux residues will remain on the surface. If the surface cleanliness cannot be effectively guaranteed, it may affect the use time of the PCBA, so effectively cleaning the circuit board in manufacturing process is a very important step. So what should we be pay attention to when cleaning the PCBA board?       1.  After the PCBA board is soldered, the flux residue will corrode over time, so it should be cleaned in time after soldering.     2.  When cleaning the PCBA, we must wear an electrostatic wristband and a protective mask.     3.  When cleaning the PCBA, its necessary to protect the components and logos on the board to prevent the cleaning agent from entering the unsealed components, so as not to cause damage to the components.     4. Some electronic components are prohibited from contacting special cleaning agents, such as: key switches, buzzers, batter...