Some PCBs in SMT production handling plants need to be painted with conformal coating. Its primary function is to stop moisture, dirt, and transmission to safeguard the non-connector ports of PCBAs. If some components in the circuit card need to be protected, they do not require to be painted, and when the order quantity is small, they are typically repainted by hand and dried out by natural wind.
In SMT processing, if the above requirements are not satisfied or some parts need to be protected in huge quantities, it is needed to customize a special conformal layer component, which cooperates with Conformal Finishing production equipment of High-Quality PCB for completely automated splashing, UV healing, etc.
The part of the SMT patch that calls for a fixture will include the size of the double-sided board, PCBA board, the number of parts to be stayed clear of, and the complete variety of orders to review the number and style of the required fixtures thoroughly. For that reason, it requires to be reviewed by professional engineers prior to production.
