FR-4 aluminum 94v0 pcb

Why PCB cleaning is required? 

Because with the rapid development of the electronics industry, the integration of electronic products is getting higher and higher, the density of components on custom pcb fabrication is getting higher and higher, the wiring of stamped printed wiring boards is also very dense, and the spacing between lines is increasing. The smaller. The PCB and PCBA industry is increasingly experiencing the problem of ion pollution. Therefore, the requirements for cleanliness in electronic products are correspondingly improved. The requirements for total ion pollution and separator pollution, such as Na, Cl, Br, SO4, and other plasmas have corresponding requirements for residual concentration values. (Unit: ug/in2 or ug/cm2) Especially in the high-end circuit board industry, such as Microwave radio frequency board, automotive circuit board, Microwave radio frequency board, high-end medical equipment, metal core printed board, etc.