18 April 2024
9 common PCB Surface Finishes processes
The conductor of PCB is copper, but copper is very easy to oxidize in the air, which will affect the solderability of PCB. In order to ensure that the PCB has good welding and electrical properties, a Surface Finishes process is adopted for the conductor copper of the PCB. There are 9 common Surface Finishes processes, namely HASL, OSP, gold finger, immersion gold, immersion tin, and immersion silver. , chemical nickel palladium gold, electroplated hard gold, full plate nickel gold planting.