PCB laser marking machine has always been the laser equipment that we discuss, as people become more and more demanding for the production and use of circuit boards, the size of the PCB has also become very small, so the two-dimensional code identification size on the circuit board is also very small, let's understand the different models of laser marking equipment can play what size two-dimensional code.

     The material of PCB is mainly divided into hard board and soft board, so there are certain requirements on the selection of PCB laser marking machine. The hard board material is literally, mainly made of copper clad plate, copper foil, and adhesive, because of its optional fiber laser equipment or ultraviolet laser equipment in the choice of models. The material of the soft board is not as good as the hard board, often in the production time will be coated with a layer of paint on the surface, to protect the bottom of the board from damage, then in the choice of material can use optical fiber, carbon dioxide, UV and other laser models.

     Therefore, optical fiber, ultraviolet, carbon dioxide laser marking equipment can be marked on the PCB board, for different customers' two-dimensional code identification needs, then we recommend the model will also be different.

     Carbon dioxide PCB laser marking machine because it belongs to the red laser beam, the laser wavelength is 10640nm, the minimum line width is 0.02mm, in the light source to find that is relatively thick, so the minimum can carve 5*5mm two-dimensional code.

     Fiber laser marking machine is also a red laser beam, but the laser wavelength is 1064nm, and the minimum line width is also 0.02mm, so the minimum can carve the two-dimensional code of 5*5mm size.

     Uv laser marking machine laser wavelength 355nm cold light source, can carve a minimum 0.8*0.8mm size two-dimensional code on the PCB board, can be described as a small engraving level, and the marked two-dimensional code is clearly visible, without any touch.

     All in all, when purchasing PCB laser marking machine, we should refer to the model according to the product demand, and of course, Xiaobian suggests that you go to the laser equipment manufacturer to understand the identification effect after the sample.