, the new era will give it more functional properties, such as heat dissipation, to reduce drill pin wear, promote chip removal, and improve PCB reliability to a certain extent. In this paper, starting from the theoretical design of heat dissipation and functionalization of the cover plate, the heat dissipation test and evaluation method is developed, and then the automobile board is used as the drilling inspection object to investigate the influence of the 1100 entry sheet for pcb combination with/without heat dissipation on the reliability of the PCB. A new solution to improve PCB reliability is verified from the perspective of functionalized board heat dissipation.
The conventional aluminum sheet is used as the cover plate and matched with different types of backing plates. Among them, the nail head, hole thickness, and wick of the high heat dissipation and lubricating 1100 entry sheet for pcb are much lower than the others. The analysis is mainly due to the use of high heat dissipation lubricating backing plates The drilling temperature is much lower than others; the conventional wood fiber board is used as the backing plate, and different types of cover plates are used. Among them, the nail head, hole thickness and wick of the aluminum PCB board are slightly lower when using ordinary MVC, and the use of heat dissipation Type MVC, Mitsubishi Gas MVC, PCB board nail heads, thick holes, wicks will be much lower, the analysis is mainly due to the heat dissipation type MVC, Mitsubishi Gas MVC drilling temperature is much lower than others; 1100 entry sheet for pcb heat dissipation The heat dissipation of the resin-containing film is related to the use of such a cover plate with high heat dissipation characteristics. The drill bit is not easy to adhere to the amount of drill chips, and the chip removal will be easier; at the same time, the heat dissipation resin glue will melt into a lubricant at high temperatures, and further Promote chip removal, which directly affects the hole wall quality of the PCB board's nail head, hole thickness, wick, etc. This is the reason why the heat dissipation of the cover plate will affect the hole wall quality. The verification result is consistent with the data content of Mitsubishi Gas in Japan and LCOA in the United States. Match. This also shows that the cover plate to improve heat dissipation can assist the drilling and improve the reliability of the PCB.
