Printed circuit board(PCB)was one of the indispensable basic components in the elec-tronic system,once damaged will lead to the failure of the entire electronic system.Therefore,it was par-ticularly important to understand the nature of corrosion failure of PCB in practical service.This paper summarized the main factors that lead to the corrosion failure of PCB,including the property factors relat-ed with materials and external environmental factors(temperature,relative humidity,corrosive gas,elec-tric field,etc.),summarizing the advantages and disadvantages of different surface treatment processes,and concluding the synergistic effect of external environment factors on the corrosion failure mechanism of PCB.The main testing methods for corrosion failure research of PCB is summarized.The advantages and disadvantages of different testing methods in corrosion failure research of PCB were clarified,and the progress of common corrosion types of PCB in different service environments was summarized.Final-ly,the combination of environmental testing and simulation analysis was proposed to establish a PCB cor-rosion model that was more suitable for the actual service environment.
维普
万方数据